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JavaScript Function apply() Method

JavaScript Function apply() Method with example on javascript function object, javascript tutorial, apply(), bind(), call(), toString(), toSource(), isgenerator(), javascript handler, javascript reflect, object, number etc.

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JavaScript Function apply() method

The JavaScript Function apply() method is used to call a function contains this value and an argument contains elements of an array. Unlike call() method, it contains the single array of arguments.

Syntax

function.apply(thisArg, [array])

Parameter

thisArg - It is optional. The this value is given for the call to a function.

array - It is optional. It is an array-like object.

Return Value

It returns the result of the calling function along provided this value and arguments.

JavaScript Function apply() method Example

Example 1

Let's see an example to determine the maximum element.

<script>
var arr = [7, 5, 9, 1];
var max = Math.max.apply(null, arr);
document.writeln(max);
</script>
Test it Now

Output:

9

Example 2

Let's see an example to determine the minimum element.

<script>
var arr = [7, 5, 9, 1];
var min = Math.min.apply(null, arr);
document.writeln(min);
</script>
Test it Now

Output:

1

Example 3

Let's see an example to join arrays of same type.

<script>
var array = [1,2,3,4];
var newarray=[5,6,7,8]
array.push.apply(array, newarray);
document.writeln(array);
</script>
Test it Now

Output:

1,2,3,4,5,6,7,8

Example 4

Let's see an example to join array of different type.

<script>
var array = [1,2,3,4];
var newarray=["One","Two","Three","Four"]
array.push.apply(array, newarray);
document.writeln(array);
</script>
Test it Now

Output:

1,2,3,4,One,Two,Three,Four

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