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Underscore.js | _.invert() Function

  • Last Updated : 27 Apr, 2020

The _.invert() function is used to return the copy of an object where the object key is converted into value and object value is converted into the key. It means the [key, value] of the object is reverse.

Syntax:

_.invert( object )

Parameters: This function accepts single parameter as mentioned above and described below:

  • object: It contains the object element that holds the elements of key and value pair.

Return Value: It returns the [key, value] of an object in reverse [value, key] order.

Example 1:






<!DOCTYPE html>
<html>
  
<head>
    <script type="text/javascript" 
            src=
    </script>
</head>
  
<body>
    <script type="text/javascript">
  
        var obj = {
            Company: "GeeksforGeeks",
            Address: "Noida",
            Contact: "+91 9876543210",
            Email: "abc@gfg.com"
        }
        console.log(_.invert(obj));
    </script>
</body>
  
</html>

Output:

Example 2:




<!DOCTYPE html>
<html>
  
<head>
    <script type="text/javascript" 
            src=
    </script>
</head>
  
<body>
    <script type="text/javascript">
  
        var inv = _.invert({
            num1: 10,
            num2: 20,
            num3: 30,
            num4: 40
        });
  
        console.log(inv);
    </script>
</body>
  
</html>

Output:




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