The combo box drop down tree with javascript?












0














After I wrote it, I found that the order of the drop-down boxes is reversed. This is not the right thing to do. How to use the method to make the order of the drop-down boxes is correct.



But It must be done according to the effect.



 one
├ two
│ ├ five
│ └ six
├ three
└ four
│ └ seven
one-2
├ two-2
│ └ five-2
│ │ └ four-2
│ │ │ └ four-3
├ five-3
│ ├ four-3
│ ├ four-4
│ └ four-5
└ six-2


Look at the picture: enter image description here






var data = [{
"id": 1,
"name": "one",
"pid": 0,
"level": 0,
"children": [{
"id": 2,
"name": "two",
"pid": 1,
"level": 1,
"children": [{
"id": 3,
"name": "five",
"pid": 2,
"level": 2,
"children":
},
{
"id": 4,
"name": "six",
"pid": 2,
"level": 2,
"children":
}
]
},
{
"id": 5,
"name": "three",
"pid": 1,
"level": 1,
"children":
},
{
"id": 6,
"name": "four",
"pid": 1,
"level": 1,
"children": [{
"id": 7,
"name": "seven",
"pid": 6,
"level": 2,
"children":
}]
}
]
},
{
"id": 8,
"name": "one-2",
"pid": 0,
"level": 0,
"children": [{
"id": 9,
"name": "two-2",
"pid": 8,
"level": 1,
"children": [{
"id": 10,
"name": "five-2",
"pid": 9,
"level": 2,
"children": [{
"id": 11,
"name": "four-2",
"pid": 10,
"level": 3,
"children": [{
"id": 12,
"name": "four-3",
"pid": 11,
"level": 4,
"children":
}]
}]
}]
},
{
"id": 13,
"name": "five-3",
"pid": 8,
"level": 1,
"children": [{
"id": 14,
"name": "four-3",
"pid": 13,
"level": 2,
"children":
},
{
"id": 15,
"name": "four-4",
"pid": 13,
"level": 2,
"children":
},
{
"id": 16,
"name": "four-5",
"pid": 13,
"level": 2,
"children":
}
]
},
{
"id": 17,
"name": "six-2",
"pid": 8,
"level": 1,
"children":
}
]

}
]

var icon = new Array('', '├ ', '└ ', '│ ');

//Processing tree hierarchy data
function getDeep(data) {
(function rec(data, depth) {
var str = "";
var _prefix = (new Array(depth)).join(icon[3]);
for (i in data) {
if (data[i].name || '') {
if (depth === 0) {
str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
console.log(data[i].name);
} else {
if (i < data.length - 1) {
str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
"</option>";
console.log(_prefix + icon[1] + data[i].name);
} else {

str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
"</option>";
console.log(_prefix + icon[2] + data[i].name);
}

}

}
if (data[i].hasOwnProperty('children') && data[i].children.length) {
rec(data[i].children, depth + 1);
}
}
$("#selectbox").append(str);
})(data, 0);
}

$(function() {
getDeep(data);
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="selectbox"></select>












share|improve this question





























    0














    After I wrote it, I found that the order of the drop-down boxes is reversed. This is not the right thing to do. How to use the method to make the order of the drop-down boxes is correct.



    But It must be done according to the effect.



     one
    ├ two
    │ ├ five
    │ └ six
    ├ three
    └ four
    │ └ seven
    one-2
    ├ two-2
    │ └ five-2
    │ │ └ four-2
    │ │ │ └ four-3
    ├ five-3
    │ ├ four-3
    │ ├ four-4
    │ └ four-5
    └ six-2


    Look at the picture: enter image description here






    var data = [{
    "id": 1,
    "name": "one",
    "pid": 0,
    "level": 0,
    "children": [{
    "id": 2,
    "name": "two",
    "pid": 1,
    "level": 1,
    "children": [{
    "id": 3,
    "name": "five",
    "pid": 2,
    "level": 2,
    "children":
    },
    {
    "id": 4,
    "name": "six",
    "pid": 2,
    "level": 2,
    "children":
    }
    ]
    },
    {
    "id": 5,
    "name": "three",
    "pid": 1,
    "level": 1,
    "children":
    },
    {
    "id": 6,
    "name": "four",
    "pid": 1,
    "level": 1,
    "children": [{
    "id": 7,
    "name": "seven",
    "pid": 6,
    "level": 2,
    "children":
    }]
    }
    ]
    },
    {
    "id": 8,
    "name": "one-2",
    "pid": 0,
    "level": 0,
    "children": [{
    "id": 9,
    "name": "two-2",
    "pid": 8,
    "level": 1,
    "children": [{
    "id": 10,
    "name": "five-2",
    "pid": 9,
    "level": 2,
    "children": [{
    "id": 11,
    "name": "four-2",
    "pid": 10,
    "level": 3,
    "children": [{
    "id": 12,
    "name": "four-3",
    "pid": 11,
    "level": 4,
    "children":
    }]
    }]
    }]
    },
    {
    "id": 13,
    "name": "five-3",
    "pid": 8,
    "level": 1,
    "children": [{
    "id": 14,
    "name": "four-3",
    "pid": 13,
    "level": 2,
    "children":
    },
    {
    "id": 15,
    "name": "four-4",
    "pid": 13,
    "level": 2,
    "children":
    },
    {
    "id": 16,
    "name": "four-5",
    "pid": 13,
    "level": 2,
    "children":
    }
    ]
    },
    {
    "id": 17,
    "name": "six-2",
    "pid": 8,
    "level": 1,
    "children":
    }
    ]

    }
    ]

    var icon = new Array('', '├ ', '└ ', '│ ');

    //Processing tree hierarchy data
    function getDeep(data) {
    (function rec(data, depth) {
    var str = "";
    var _prefix = (new Array(depth)).join(icon[3]);
    for (i in data) {
    if (data[i].name || '') {
    if (depth === 0) {
    str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
    console.log(data[i].name);
    } else {
    if (i < data.length - 1) {
    str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
    "</option>";
    console.log(_prefix + icon[1] + data[i].name);
    } else {

    str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
    "</option>";
    console.log(_prefix + icon[2] + data[i].name);
    }

    }

    }
    if (data[i].hasOwnProperty('children') && data[i].children.length) {
    rec(data[i].children, depth + 1);
    }
    }
    $("#selectbox").append(str);
    })(data, 0);
    }

    $(function() {
    getDeep(data);
    })

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
    <select id="selectbox"></select>












    share|improve this question



























      0












      0








      0







      After I wrote it, I found that the order of the drop-down boxes is reversed. This is not the right thing to do. How to use the method to make the order of the drop-down boxes is correct.



      But It must be done according to the effect.



       one
      ├ two
      │ ├ five
      │ └ six
      ├ three
      └ four
      │ └ seven
      one-2
      ├ two-2
      │ └ five-2
      │ │ └ four-2
      │ │ │ └ four-3
      ├ five-3
      │ ├ four-3
      │ ├ four-4
      │ └ four-5
      └ six-2


      Look at the picture: enter image description here






      var data = [{
      "id": 1,
      "name": "one",
      "pid": 0,
      "level": 0,
      "children": [{
      "id": 2,
      "name": "two",
      "pid": 1,
      "level": 1,
      "children": [{
      "id": 3,
      "name": "five",
      "pid": 2,
      "level": 2,
      "children":
      },
      {
      "id": 4,
      "name": "six",
      "pid": 2,
      "level": 2,
      "children":
      }
      ]
      },
      {
      "id": 5,
      "name": "three",
      "pid": 1,
      "level": 1,
      "children":
      },
      {
      "id": 6,
      "name": "four",
      "pid": 1,
      "level": 1,
      "children": [{
      "id": 7,
      "name": "seven",
      "pid": 6,
      "level": 2,
      "children":
      }]
      }
      ]
      },
      {
      "id": 8,
      "name": "one-2",
      "pid": 0,
      "level": 0,
      "children": [{
      "id": 9,
      "name": "two-2",
      "pid": 8,
      "level": 1,
      "children": [{
      "id": 10,
      "name": "five-2",
      "pid": 9,
      "level": 2,
      "children": [{
      "id": 11,
      "name": "four-2",
      "pid": 10,
      "level": 3,
      "children": [{
      "id": 12,
      "name": "four-3",
      "pid": 11,
      "level": 4,
      "children":
      }]
      }]
      }]
      },
      {
      "id": 13,
      "name": "five-3",
      "pid": 8,
      "level": 1,
      "children": [{
      "id": 14,
      "name": "four-3",
      "pid": 13,
      "level": 2,
      "children":
      },
      {
      "id": 15,
      "name": "four-4",
      "pid": 13,
      "level": 2,
      "children":
      },
      {
      "id": 16,
      "name": "four-5",
      "pid": 13,
      "level": 2,
      "children":
      }
      ]
      },
      {
      "id": 17,
      "name": "six-2",
      "pid": 8,
      "level": 1,
      "children":
      }
      ]

      }
      ]

      var icon = new Array('', '├ ', '└ ', '│ ');

      //Processing tree hierarchy data
      function getDeep(data) {
      (function rec(data, depth) {
      var str = "";
      var _prefix = (new Array(depth)).join(icon[3]);
      for (i in data) {
      if (data[i].name || '') {
      if (depth === 0) {
      str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
      console.log(data[i].name);
      } else {
      if (i < data.length - 1) {
      str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
      "</option>";
      console.log(_prefix + icon[1] + data[i].name);
      } else {

      str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
      "</option>";
      console.log(_prefix + icon[2] + data[i].name);
      }

      }

      }
      if (data[i].hasOwnProperty('children') && data[i].children.length) {
      rec(data[i].children, depth + 1);
      }
      }
      $("#selectbox").append(str);
      })(data, 0);
      }

      $(function() {
      getDeep(data);
      })

      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
      <select id="selectbox"></select>












      share|improve this question















      After I wrote it, I found that the order of the drop-down boxes is reversed. This is not the right thing to do. How to use the method to make the order of the drop-down boxes is correct.



      But It must be done according to the effect.



       one
      ├ two
      │ ├ five
      │ └ six
      ├ three
      └ four
      │ └ seven
      one-2
      ├ two-2
      │ └ five-2
      │ │ └ four-2
      │ │ │ └ four-3
      ├ five-3
      │ ├ four-3
      │ ├ four-4
      │ └ four-5
      └ six-2


      Look at the picture: enter image description here






      var data = [{
      "id": 1,
      "name": "one",
      "pid": 0,
      "level": 0,
      "children": [{
      "id": 2,
      "name": "two",
      "pid": 1,
      "level": 1,
      "children": [{
      "id": 3,
      "name": "five",
      "pid": 2,
      "level": 2,
      "children":
      },
      {
      "id": 4,
      "name": "six",
      "pid": 2,
      "level": 2,
      "children":
      }
      ]
      },
      {
      "id": 5,
      "name": "three",
      "pid": 1,
      "level": 1,
      "children":
      },
      {
      "id": 6,
      "name": "four",
      "pid": 1,
      "level": 1,
      "children": [{
      "id": 7,
      "name": "seven",
      "pid": 6,
      "level": 2,
      "children":
      }]
      }
      ]
      },
      {
      "id": 8,
      "name": "one-2",
      "pid": 0,
      "level": 0,
      "children": [{
      "id": 9,
      "name": "two-2",
      "pid": 8,
      "level": 1,
      "children": [{
      "id": 10,
      "name": "five-2",
      "pid": 9,
      "level": 2,
      "children": [{
      "id": 11,
      "name": "four-2",
      "pid": 10,
      "level": 3,
      "children": [{
      "id": 12,
      "name": "four-3",
      "pid": 11,
      "level": 4,
      "children":
      }]
      }]
      }]
      },
      {
      "id": 13,
      "name": "five-3",
      "pid": 8,
      "level": 1,
      "children": [{
      "id": 14,
      "name": "four-3",
      "pid": 13,
      "level": 2,
      "children":
      },
      {
      "id": 15,
      "name": "four-4",
      "pid": 13,
      "level": 2,
      "children":
      },
      {
      "id": 16,
      "name": "four-5",
      "pid": 13,
      "level": 2,
      "children":
      }
      ]
      },
      {
      "id": 17,
      "name": "six-2",
      "pid": 8,
      "level": 1,
      "children":
      }
      ]

      }
      ]

      var icon = new Array('', '├ ', '└ ', '│ ');

      //Processing tree hierarchy data
      function getDeep(data) {
      (function rec(data, depth) {
      var str = "";
      var _prefix = (new Array(depth)).join(icon[3]);
      for (i in data) {
      if (data[i].name || '') {
      if (depth === 0) {
      str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
      console.log(data[i].name);
      } else {
      if (i < data.length - 1) {
      str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
      "</option>";
      console.log(_prefix + icon[1] + data[i].name);
      } else {

      str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
      "</option>";
      console.log(_prefix + icon[2] + data[i].name);
      }

      }

      }
      if (data[i].hasOwnProperty('children') && data[i].children.length) {
      rec(data[i].children, depth + 1);
      }
      }
      $("#selectbox").append(str);
      })(data, 0);
      }

      $(function() {
      getDeep(data);
      })

      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
      <select id="selectbox"></select>








      var data = [{
      "id": 1,
      "name": "one",
      "pid": 0,
      "level": 0,
      "children": [{
      "id": 2,
      "name": "two",
      "pid": 1,
      "level": 1,
      "children": [{
      "id": 3,
      "name": "five",
      "pid": 2,
      "level": 2,
      "children":
      },
      {
      "id": 4,
      "name": "six",
      "pid": 2,
      "level": 2,
      "children":
      }
      ]
      },
      {
      "id": 5,
      "name": "three",
      "pid": 1,
      "level": 1,
      "children":
      },
      {
      "id": 6,
      "name": "four",
      "pid": 1,
      "level": 1,
      "children": [{
      "id": 7,
      "name": "seven",
      "pid": 6,
      "level": 2,
      "children":
      }]
      }
      ]
      },
      {
      "id": 8,
      "name": "one-2",
      "pid": 0,
      "level": 0,
      "children": [{
      "id": 9,
      "name": "two-2",
      "pid": 8,
      "level": 1,
      "children": [{
      "id": 10,
      "name": "five-2",
      "pid": 9,
      "level": 2,
      "children": [{
      "id": 11,
      "name": "four-2",
      "pid": 10,
      "level": 3,
      "children": [{
      "id": 12,
      "name": "four-3",
      "pid": 11,
      "level": 4,
      "children":
      }]
      }]
      }]
      },
      {
      "id": 13,
      "name": "five-3",
      "pid": 8,
      "level": 1,
      "children": [{
      "id": 14,
      "name": "four-3",
      "pid": 13,
      "level": 2,
      "children":
      },
      {
      "id": 15,
      "name": "four-4",
      "pid": 13,
      "level": 2,
      "children":
      },
      {
      "id": 16,
      "name": "four-5",
      "pid": 13,
      "level": 2,
      "children":
      }
      ]
      },
      {
      "id": 17,
      "name": "six-2",
      "pid": 8,
      "level": 1,
      "children":
      }
      ]

      }
      ]

      var icon = new Array('', '├ ', '└ ', '│ ');

      //Processing tree hierarchy data
      function getDeep(data) {
      (function rec(data, depth) {
      var str = "";
      var _prefix = (new Array(depth)).join(icon[3]);
      for (i in data) {
      if (data[i].name || '') {
      if (depth === 0) {
      str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
      console.log(data[i].name);
      } else {
      if (i < data.length - 1) {
      str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
      "</option>";
      console.log(_prefix + icon[1] + data[i].name);
      } else {

      str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
      "</option>";
      console.log(_prefix + icon[2] + data[i].name);
      }

      }

      }
      if (data[i].hasOwnProperty('children') && data[i].children.length) {
      rec(data[i].children, depth + 1);
      }
      }
      $("#selectbox").append(str);
      })(data, 0);
      }

      $(function() {
      getDeep(data);
      })

      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
      <select id="selectbox"></select>





      var data = [{
      "id": 1,
      "name": "one",
      "pid": 0,
      "level": 0,
      "children": [{
      "id": 2,
      "name": "two",
      "pid": 1,
      "level": 1,
      "children": [{
      "id": 3,
      "name": "five",
      "pid": 2,
      "level": 2,
      "children":
      },
      {
      "id": 4,
      "name": "six",
      "pid": 2,
      "level": 2,
      "children":
      }
      ]
      },
      {
      "id": 5,
      "name": "three",
      "pid": 1,
      "level": 1,
      "children":
      },
      {
      "id": 6,
      "name": "four",
      "pid": 1,
      "level": 1,
      "children": [{
      "id": 7,
      "name": "seven",
      "pid": 6,
      "level": 2,
      "children":
      }]
      }
      ]
      },
      {
      "id": 8,
      "name": "one-2",
      "pid": 0,
      "level": 0,
      "children": [{
      "id": 9,
      "name": "two-2",
      "pid": 8,
      "level": 1,
      "children": [{
      "id": 10,
      "name": "five-2",
      "pid": 9,
      "level": 2,
      "children": [{
      "id": 11,
      "name": "four-2",
      "pid": 10,
      "level": 3,
      "children": [{
      "id": 12,
      "name": "four-3",
      "pid": 11,
      "level": 4,
      "children":
      }]
      }]
      }]
      },
      {
      "id": 13,
      "name": "five-3",
      "pid": 8,
      "level": 1,
      "children": [{
      "id": 14,
      "name": "four-3",
      "pid": 13,
      "level": 2,
      "children":
      },
      {
      "id": 15,
      "name": "four-4",
      "pid": 13,
      "level": 2,
      "children":
      },
      {
      "id": 16,
      "name": "four-5",
      "pid": 13,
      "level": 2,
      "children":
      }
      ]
      },
      {
      "id": 17,
      "name": "six-2",
      "pid": 8,
      "level": 1,
      "children":
      }
      ]

      }
      ]

      var icon = new Array('', '├ ', '└ ', '│ ');

      //Processing tree hierarchy data
      function getDeep(data) {
      (function rec(data, depth) {
      var str = "";
      var _prefix = (new Array(depth)).join(icon[3]);
      for (i in data) {
      if (data[i].name || '') {
      if (depth === 0) {
      str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
      console.log(data[i].name);
      } else {
      if (i < data.length - 1) {
      str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
      "</option>";
      console.log(_prefix + icon[1] + data[i].name);
      } else {

      str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
      "</option>";
      console.log(_prefix + icon[2] + data[i].name);
      }

      }

      }
      if (data[i].hasOwnProperty('children') && data[i].children.length) {
      rec(data[i].children, depth + 1);
      }
      }
      $("#selectbox").append(str);
      })(data, 0);
      }

      $(function() {
      getDeep(data);
      })

      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
      <select id="selectbox"></select>






      javascript jquery html






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 20 '18 at 11:44









      Rory McCrossan

      241k29206245




      241k29206245










      asked Nov 20 '18 at 11:43









      wen tian

      1037




      1037
























          1 Answer
          1






          active

          oldest

          votes


















          1














          Just move the str var outside your rec function






          var data = [{
          "id": 1,
          "name": "one",
          "pid": 0,
          "level": 0,
          "children": [{
          "id": 2,
          "name": "two",
          "pid": 1,
          "level": 1,
          "children": [{
          "id": 3,
          "name": "five",
          "pid": 2,
          "level": 2,
          "children":
          },
          {
          "id": 4,
          "name": "six",
          "pid": 2,
          "level": 2,
          "children":
          }
          ]
          },
          {
          "id": 5,
          "name": "three",
          "pid": 1,
          "level": 1,
          "children":
          },
          {
          "id": 6,
          "name": "four",
          "pid": 1,
          "level": 1,
          "children": [{
          "id": 7,
          "name": "seven",
          "pid": 6,
          "level": 2,
          "children":
          }]
          }
          ]
          },
          {
          "id": 8,
          "name": "one-2",
          "pid": 0,
          "level": 0,
          "children": [{
          "id": 9,
          "name": "two-2",
          "pid": 8,
          "level": 1,
          "children": [{
          "id": 10,
          "name": "five-2",
          "pid": 9,
          "level": 2,
          "children": [{
          "id": 11,
          "name": "four-2",
          "pid": 10,
          "level": 3,
          "children": [{
          "id": 12,
          "name": "four-3",
          "pid": 11,
          "level": 4,
          "children":
          }]
          }]
          }]
          },
          {
          "id": 13,
          "name": "five-3",
          "pid": 8,
          "level": 1,
          "children": [{
          "id": 14,
          "name": "four-3",
          "pid": 13,
          "level": 2,
          "children":
          },
          {
          "id": 15,
          "name": "four-4",
          "pid": 13,
          "level": 2,
          "children":
          },
          {
          "id": 16,
          "name": "four-5",
          "pid": 13,
          "level": 2,
          "children":
          }
          ]
          },
          {
          "id": 17,
          "name": "six-2",
          "pid": 8,
          "level": 1,
          "children":
          }
          ]

          }
          ]

          var icon = new Array('', '├ ', '└ ', '│ ');

          //Processing tree hierarchy data
          function getDeep(data) {
          var str = "";
          (function rec(data, depth) {
          var _prefix = (new Array(depth)).join(icon[3]);
          for (i in data) {
          if (data[i].name || '') {
          if (depth === 0) {
          str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
          console.log(data[i].name);
          } else {
          if (i < data.length - 1) {
          str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
          "</option>";
          console.log(_prefix + icon[1] + data[i].name);
          } else {

          str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
          "</option>";
          console.log(_prefix + icon[2] + data[i].name);
          }

          }

          }
          if (data[i].hasOwnProperty('children') && data[i].children.length) {
          rec(data[i].children, depth + 1);
          }
          }
          })(data, 0);
          $("#selectbox").append(str);
          }

          $(function() {
          getDeep(data);
          })

          <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
          <select id="selectbox"></select>








          share|improve this answer





















            Your Answer






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            1 Answer
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            1 Answer
            1






            active

            oldest

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            active

            oldest

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            active

            oldest

            votes









            1














            Just move the str var outside your rec function






            var data = [{
            "id": 1,
            "name": "one",
            "pid": 0,
            "level": 0,
            "children": [{
            "id": 2,
            "name": "two",
            "pid": 1,
            "level": 1,
            "children": [{
            "id": 3,
            "name": "five",
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            "children":
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            "level": 1,
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            "pid": 1,
            "level": 1,
            "children": [{
            "id": 7,
            "name": "seven",
            "pid": 6,
            "level": 2,
            "children":
            }]
            }
            ]
            },
            {
            "id": 8,
            "name": "one-2",
            "pid": 0,
            "level": 0,
            "children": [{
            "id": 9,
            "name": "two-2",
            "pid": 8,
            "level": 1,
            "children": [{
            "id": 10,
            "name": "five-2",
            "pid": 9,
            "level": 2,
            "children": [{
            "id": 11,
            "name": "four-2",
            "pid": 10,
            "level": 3,
            "children": [{
            "id": 12,
            "name": "four-3",
            "pid": 11,
            "level": 4,
            "children":
            }]
            }]
            }]
            },
            {
            "id": 13,
            "name": "five-3",
            "pid": 8,
            "level": 1,
            "children": [{
            "id": 14,
            "name": "four-3",
            "pid": 13,
            "level": 2,
            "children":
            },
            {
            "id": 15,
            "name": "four-4",
            "pid": 13,
            "level": 2,
            "children":
            },
            {
            "id": 16,
            "name": "four-5",
            "pid": 13,
            "level": 2,
            "children":
            }
            ]
            },
            {
            "id": 17,
            "name": "six-2",
            "pid": 8,
            "level": 1,
            "children":
            }
            ]

            }
            ]

            var icon = new Array('', '├ ', '└ ', '│ ');

            //Processing tree hierarchy data
            function getDeep(data) {
            var str = "";
            (function rec(data, depth) {
            var _prefix = (new Array(depth)).join(icon[3]);
            for (i in data) {
            if (data[i].name || '') {
            if (depth === 0) {
            str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
            console.log(data[i].name);
            } else {
            if (i < data.length - 1) {
            str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
            "</option>";
            console.log(_prefix + icon[1] + data[i].name);
            } else {

            str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
            "</option>";
            console.log(_prefix + icon[2] + data[i].name);
            }

            }

            }
            if (data[i].hasOwnProperty('children') && data[i].children.length) {
            rec(data[i].children, depth + 1);
            }
            }
            })(data, 0);
            $("#selectbox").append(str);
            }

            $(function() {
            getDeep(data);
            })

            <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
            <select id="selectbox"></select>








            share|improve this answer


























              1














              Just move the str var outside your rec function






              var data = [{
              "id": 1,
              "name": "one",
              "pid": 0,
              "level": 0,
              "children": [{
              "id": 2,
              "name": "two",
              "pid": 1,
              "level": 1,
              "children": [{
              "id": 3,
              "name": "five",
              "pid": 2,
              "level": 2,
              "children":
              },
              {
              "id": 4,
              "name": "six",
              "pid": 2,
              "level": 2,
              "children":
              }
              ]
              },
              {
              "id": 5,
              "name": "three",
              "pid": 1,
              "level": 1,
              "children":
              },
              {
              "id": 6,
              "name": "four",
              "pid": 1,
              "level": 1,
              "children": [{
              "id": 7,
              "name": "seven",
              "pid": 6,
              "level": 2,
              "children":
              }]
              }
              ]
              },
              {
              "id": 8,
              "name": "one-2",
              "pid": 0,
              "level": 0,
              "children": [{
              "id": 9,
              "name": "two-2",
              "pid": 8,
              "level": 1,
              "children": [{
              "id": 10,
              "name": "five-2",
              "pid": 9,
              "level": 2,
              "children": [{
              "id": 11,
              "name": "four-2",
              "pid": 10,
              "level": 3,
              "children": [{
              "id": 12,
              "name": "four-3",
              "pid": 11,
              "level": 4,
              "children":
              }]
              }]
              }]
              },
              {
              "id": 13,
              "name": "five-3",
              "pid": 8,
              "level": 1,
              "children": [{
              "id": 14,
              "name": "four-3",
              "pid": 13,
              "level": 2,
              "children":
              },
              {
              "id": 15,
              "name": "four-4",
              "pid": 13,
              "level": 2,
              "children":
              },
              {
              "id": 16,
              "name": "four-5",
              "pid": 13,
              "level": 2,
              "children":
              }
              ]
              },
              {
              "id": 17,
              "name": "six-2",
              "pid": 8,
              "level": 1,
              "children":
              }
              ]

              }
              ]

              var icon = new Array('', '├ ', '└ ', '│ ');

              //Processing tree hierarchy data
              function getDeep(data) {
              var str = "";
              (function rec(data, depth) {
              var _prefix = (new Array(depth)).join(icon[3]);
              for (i in data) {
              if (data[i].name || '') {
              if (depth === 0) {
              str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
              console.log(data[i].name);
              } else {
              if (i < data.length - 1) {
              str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
              "</option>";
              console.log(_prefix + icon[1] + data[i].name);
              } else {

              str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
              "</option>";
              console.log(_prefix + icon[2] + data[i].name);
              }

              }

              }
              if (data[i].hasOwnProperty('children') && data[i].children.length) {
              rec(data[i].children, depth + 1);
              }
              }
              })(data, 0);
              $("#selectbox").append(str);
              }

              $(function() {
              getDeep(data);
              })

              <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
              <select id="selectbox"></select>








              share|improve this answer
























                1












                1








                1






                Just move the str var outside your rec function






                var data = [{
                "id": 1,
                "name": "one",
                "pid": 0,
                "level": 0,
                "children": [{
                "id": 2,
                "name": "two",
                "pid": 1,
                "level": 1,
                "children": [{
                "id": 3,
                "name": "five",
                "pid": 2,
                "level": 2,
                "children":
                },
                {
                "id": 4,
                "name": "six",
                "pid": 2,
                "level": 2,
                "children":
                }
                ]
                },
                {
                "id": 5,
                "name": "three",
                "pid": 1,
                "level": 1,
                "children":
                },
                {
                "id": 6,
                "name": "four",
                "pid": 1,
                "level": 1,
                "children": [{
                "id": 7,
                "name": "seven",
                "pid": 6,
                "level": 2,
                "children":
                }]
                }
                ]
                },
                {
                "id": 8,
                "name": "one-2",
                "pid": 0,
                "level": 0,
                "children": [{
                "id": 9,
                "name": "two-2",
                "pid": 8,
                "level": 1,
                "children": [{
                "id": 10,
                "name": "five-2",
                "pid": 9,
                "level": 2,
                "children": [{
                "id": 11,
                "name": "four-2",
                "pid": 10,
                "level": 3,
                "children": [{
                "id": 12,
                "name": "four-3",
                "pid": 11,
                "level": 4,
                "children":
                }]
                }]
                }]
                },
                {
                "id": 13,
                "name": "five-3",
                "pid": 8,
                "level": 1,
                "children": [{
                "id": 14,
                "name": "four-3",
                "pid": 13,
                "level": 2,
                "children":
                },
                {
                "id": 15,
                "name": "four-4",
                "pid": 13,
                "level": 2,
                "children":
                },
                {
                "id": 16,
                "name": "four-5",
                "pid": 13,
                "level": 2,
                "children":
                }
                ]
                },
                {
                "id": 17,
                "name": "six-2",
                "pid": 8,
                "level": 1,
                "children":
                }
                ]

                }
                ]

                var icon = new Array('', '├ ', '└ ', '│ ');

                //Processing tree hierarchy data
                function getDeep(data) {
                var str = "";
                (function rec(data, depth) {
                var _prefix = (new Array(depth)).join(icon[3]);
                for (i in data) {
                if (data[i].name || '') {
                if (depth === 0) {
                str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
                console.log(data[i].name);
                } else {
                if (i < data.length - 1) {
                str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
                "</option>";
                console.log(_prefix + icon[1] + data[i].name);
                } else {

                str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
                "</option>";
                console.log(_prefix + icon[2] + data[i].name);
                }

                }

                }
                if (data[i].hasOwnProperty('children') && data[i].children.length) {
                rec(data[i].children, depth + 1);
                }
                }
                })(data, 0);
                $("#selectbox").append(str);
                }

                $(function() {
                getDeep(data);
                })

                <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
                <select id="selectbox"></select>








                share|improve this answer












                Just move the str var outside your rec function






                var data = [{
                "id": 1,
                "name": "one",
                "pid": 0,
                "level": 0,
                "children": [{
                "id": 2,
                "name": "two",
                "pid": 1,
                "level": 1,
                "children": [{
                "id": 3,
                "name": "five",
                "pid": 2,
                "level": 2,
                "children":
                },
                {
                "id": 4,
                "name": "six",
                "pid": 2,
                "level": 2,
                "children":
                }
                ]
                },
                {
                "id": 5,
                "name": "three",
                "pid": 1,
                "level": 1,
                "children":
                },
                {
                "id": 6,
                "name": "four",
                "pid": 1,
                "level": 1,
                "children": [{
                "id": 7,
                "name": "seven",
                "pid": 6,
                "level": 2,
                "children":
                }]
                }
                ]
                },
                {
                "id": 8,
                "name": "one-2",
                "pid": 0,
                "level": 0,
                "children": [{
                "id": 9,
                "name": "two-2",
                "pid": 8,
                "level": 1,
                "children": [{
                "id": 10,
                "name": "five-2",
                "pid": 9,
                "level": 2,
                "children": [{
                "id": 11,
                "name": "four-2",
                "pid": 10,
                "level": 3,
                "children": [{
                "id": 12,
                "name": "four-3",
                "pid": 11,
                "level": 4,
                "children":
                }]
                }]
                }]
                },
                {
                "id": 13,
                "name": "five-3",
                "pid": 8,
                "level": 1,
                "children": [{
                "id": 14,
                "name": "four-3",
                "pid": 13,
                "level": 2,
                "children":
                },
                {
                "id": 15,
                "name": "four-4",
                "pid": 13,
                "level": 2,
                "children":
                },
                {
                "id": 16,
                "name": "four-5",
                "pid": 13,
                "level": 2,
                "children":
                }
                ]
                },
                {
                "id": 17,
                "name": "six-2",
                "pid": 8,
                "level": 1,
                "children":
                }
                ]

                }
                ]

                var icon = new Array('', '├ ', '└ ', '│ ');

                //Processing tree hierarchy data
                function getDeep(data) {
                var str = "";
                (function rec(data, depth) {
                var _prefix = (new Array(depth)).join(icon[3]);
                for (i in data) {
                if (data[i].name || '') {
                if (depth === 0) {
                str += "<option value='" + data[i].id + "'>" + data[i].name + "</option>";
                console.log(data[i].name);
                } else {
                if (i < data.length - 1) {
                str += "<option value='" + data[i].id + "'>" + _prefix + icon[1] + data[i].name +
                "</option>";
                console.log(_prefix + icon[1] + data[i].name);
                } else {

                str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
                "</option>";
                console.log(_prefix + icon[2] + data[i].name);
                }

                }

                }
                if (data[i].hasOwnProperty('children') && data[i].children.length) {
                rec(data[i].children, depth + 1);
                }
                }
                })(data, 0);
                $("#selectbox").append(str);
                }

                $(function() {
                getDeep(data);
                })

                <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
                <select id="selectbox"></select>








                var data = [{
                "id": 1,
                "name": "one",
                "pid": 0,
                "level": 0,
                "children": [{
                "id": 2,
                "name": "two",
                "pid": 1,
                "level": 1,
                "children": [{
                "id": 3,
                "name": "five",
                "pid": 2,
                "level": 2,
                "children":
                },
                {
                "id": 4,
                "name": "six",
                "pid": 2,
                "level": 2,
                "children":
                }
                ]
                },
                {
                "id": 5,
                "name": "three",
                "pid": 1,
                "level": 1,
                "children":
                },
                {
                "id": 6,
                "name": "four",
                "pid": 1,
                "level": 1,
                "children": [{
                "id": 7,
                "name": "seven",
                "pid": 6,
                "level": 2,
                "children":
                }]
                }
                ]
                },
                {
                "id": 8,
                "name": "one-2",
                "pid": 0,
                "level": 0,
                "children": [{
                "id": 9,
                "name": "two-2",
                "pid": 8,
                "level": 1,
                "children": [{
                "id": 10,
                "name": "five-2",
                "pid": 9,
                "level": 2,
                "children": [{
                "id": 11,
                "name": "four-2",
                "pid": 10,
                "level": 3,
                "children": [{
                "id": 12,
                "name": "four-3",
                "pid": 11,
                "level": 4,
                "children":
                }]
                }]
                }]
                },
                {
                "id": 13,
                "name": "five-3",
                "pid": 8,
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                console.log(_prefix + icon[1] + data[i].name);
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                str += "<option value='" + data[i].id + "'>" + _prefix + icon[2] + data[i].name +
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                }

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                <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
                <select id="selectbox"></select>






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                answered Nov 20 '18 at 12:08









                claw68

                34429




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