Underscore.js _.mapObject() Function

Last Updated : 25 Nov, 2021

The _.mapObject() function is similar to the map but used for the object. This function transforms each value of the object based on the given function/operation.

Syntax:

_.mapObject(object, iteratee, [context])

Parameters: This function accepts three parameters as mentioned above and described below:

object: It contains the object element that holds the elements of key and value pair.
iteratee: It is the function which is used to take all the elements of the list and it also remember all the returned value.
context: This parameter is used to display the content.

Return Value: It returns the transform value of each object element.

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 res = _.mapObject({ num1: 10, num2: 15 }, 
            function (value, key) { 
                return value * 10; 
            }); 
  
        console.log(res); 
    </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"> 
  
        _.mapObject({ num1: 10, num2: 15, num3: 20, num4: 25, num5: 30 }, 
  
            function (value, key) { 
                console.log(key + ': ' + (value + 10)); 
            }); 
    </script> 
</body> 
  
</html> 

Output:

Underscore.js _.pairs() Function

ashokjaiswal

Improve

Article Tags :

Underscore.js _.mapObject() Function

Similar Reads

Underscore.js Collections Functions

Underscore.js Arrays Functions

Underscore.js Functions

Underscore.js Object Functions

Underscore.js Utility Functions

Underscore.js Questions

Thank You!

What kind of Experience do you want to share?