The _.compose() function is used to return the composition of the list of functions. The list of the function returns the value of the function that follows.
Syntax:
_.compose(*functions)
Parameters: This function accept a single parameter as mentioned above and described below:
- functions: It contains the list of function that to be executed.
Return Value: It returns the composition of list of functions.
Below examples illustrate the _.compose() function in Underscore.js:
Example 1:
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src=
</script>
</head>
<body>
<script type="text/javascript">
var fun1 = function (addString) {
return "Welcome to " + addString;
};
var fun2 = function (GFG) {
return GFG;
};
var str = _.compose(fun1, fun2);
console.log(str('GeeksforGeeks'));
</script>
</body>
</html>
|
Output:
Example 2:
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src=
</script>
</head>
<body>
<script type="text/javascript">
var fun1 = function (str1) {
return 'Welcome' + str1 +
'\nA computer science portal';
};
var fun2 = function (str2) {
return ' to ' + str2.toLowerCase();
};
var str = _.compose(fun1, fun2);
console.log(str('GEEKSFORGEEKS'));
</script>
</body>
</html>
|
Output:
Whether you're preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape,
GeeksforGeeks Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we've already empowered, and we're here to do the same for you. Don't miss out -
check it out now!
Last Updated :
25 Nov, 2021
Like Article
Save Article