Underscore.js _.allKeys() Function

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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= 
"https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js"> 
    </script> 
</head> 
  
<body> 
    <script type="text/javascript"> 
  
        var obj = { 
            Company: "zambiatek", 
            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= 
"https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js"> 
    </script> 
</head> 
  
<body> 
    <script type="text/javascript"> 
  
        function Geeks(name) { 
            return this.name = name; 
        } 
  
        Geeks.prototype.zambiatek = true; 
  
        console.log(_.allKeys(new Geeks("Company"))); 
    </script> 
</body> 
  
</html> 

Output:

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