The _.partial() function is used to apply partially a function by filling in any number of its arguments, without changing its dynamic value.
Syntax:
_.partial(function, *arguments)
Parameters: This function accept two parameters as mentioned above and described below:
- function: The function that need to be executed.
- arguments: This parameter needs to add some symbols between elements.
Return Value: This function returns the result of partially executed function.
Below examples illustrate the _.partial() Function in Underscore.js:
Example 1:
<!DOCTYPE html> <html>
<head>
<script type="text/javascript" src=
</script>
</head>
<body>
<script type="text/javascript">
var product = function (num1, num2) {
return num1 * num2;
};
prod = _.partial(product, 15);
console.log(prod(18));
</script>
</body>
</html>
|
Output:
Example 2:
<!DOCTYPE html> <html>
<head>
<script type="text/javascript" src=
</script>
</head>
<body>
<script type="text/javascript">
var sum = function (num1, num2, num3) {
return num1 + num2 + num3;
};
sum = _.partial(sum, 15, 25);
console.log(sum(18));
</script>
</body>
</html>
|
Output: