Underscore.js | _.mapObject() Function

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:



filter_none

edit
close

play_arrow

link
brightness_4
code

<!DOCTYPE html>
<html>
  
<head>
    <script type="text/javascript" 
            src=
    </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>

chevron_right


Output:

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

<!DOCTYPE html>
<html>
  
<head>
    <script type="text/javascript" 
            src=
    </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>

chevron_right


Output:

full-stack-img




My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.