Javascript - Create deep object from an array [duplicate]

Question

I need to create an object from an array.

For example,

I have a array like var arr = ['a', 'b', 'c'];

it should be converted to,

{
  a:{
    b:{
      c:{
      
      }
    }
  }
}

I tried the below code but not able to create a deep tree,

var arr = ['a', 'b', 'c'];
var obj = {},
    temp = 'asd';
for(var i=0; i<arr.length; i++){
    if($.isEmptyObject(obj)){
        obj[arr[i]] = {};
    } else {
        console.log(Object.keys(obj));
        obj[Object.keys(obj)][arr[i]] = {};
    }
}
console.log(obj, temp);

Fiddle

Can someone help me?

Thanks in advance.

Arun P Johny · Accepted Answer · 2014-11-14 11:42:31Z

9

You can try something like

var arr = ['a', 'b', 'c'];
var obj = temp = {};
for (var i = 0; i < arr.length; i++) {
  temp = temp[arr[i]] = {}
}

$('#result').html(JSON.stringify(obj))

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="result"></div>

answered Nov 14, 2014 at 11:42

Arun P Johny

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