Underscore.js _.pick() Function

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The _.pick() function is used to return a copy of the object that filtered using the given key. This function accepts a predicate indicating which keys are picked from the object.

Syntax:

_.pick(object, *keys)

Parameters: This function accept two parameters as mentioned above and described below:

object: This parameter holds the value of an object.
keys: It is an optional parameter. It contains the key name that value need to be picked.

Return Value: It returns a copy of the object that filtered using the given key.

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 info = { 
            Company: 'zambiatek', 
            Address: 'Noida', 
            Contact: '+91 9876543210' 
        }; 
  
        console.log(_.pick(info, 'Company', 'Address')); 
    </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"> 
  
        var info = { 
            key1: 10, 
            key2: 20, 
            key3: 30, 
            key4: 40, 
            key5: 50 
        }; 
  
        console.log(_.pick(info, function (value, key, info) { 
            return value == 10 || value == 50; 
        })); 
    </script> 
</body> 
  
</html> 