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Underscore.js _.allKeys() Function

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  • Last Updated : 25 Nov, 2021

The _.allKeys() function is used to return all keys of the object and inherited properties.

Syntax:

_.allKeys( object )

Parameters: This function accept oa 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 all key of the object and inherited properties.

Below examples illustrate the _.allKeys() function in Underscore.js:

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(_.allKeys(obj));
    </script>
</body>
  
</html>


Output:

Example 2:




<!DOCTYPE html>
<html>
  
<head>
    <script type="text/javascript" src=
    </script>
</head>
  
<body>
    <script type="text/javascript">
  
        function Geeks(name) {
            return this.name = name;
        }
  
        Geeks.prototype.GeeksforGeeks = true;
  
        console.log(_.allKeys(new Geeks("Company")));
    </script>
</body>
  
</html>


Output:


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