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JavaScript TypedArray fill() Method

JavaScript TypedArray fill() Method with example, join() method, javascript typedarray methods, keys() method, indexOf() method, includes() method, forEach() method, entries(), every(), find(), filter(), copyWithin() method etc.

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JavaScript TypedArray fill() method

The JavaScript fill() method is used to fill all the elements of array from a start index to an end index with a static value.

Syntax:

array.fill(value)
array.fill(value, start)
array.fill (value  start, end )

Parameters:

Value(Required): The value to fill the array.

Start(Optional): The index to start filling the array(default is 0).

End(Optional): The index to stop filling the array (default is array.length).

Return value:

This function does not return a new array. Instead of, it transform the array on which this function is applied.

Browser Support:

Chrome 45.0
Edge 12.0
Firefox 31.0
Opera 32.0

Example 1

JavaScript TypedArray fill(value) method

<script type="text/javascript">
// JavaScript to illustrate fill() method
// Input array
var arr1 = [1,2,3,4,5,6,7,8,9,10];
arr1.fill(20); 
document.write(arr1);
// expected output: 20,20,20,20,20,20,20,20,20,20
</script>
Test it Now

Output:

20,20,20,20,20,20,20,20,20,20

Example 2

JavaScript TypedArray fill(value,start) method

<script type="text/javascript">
// Input array 
// JavaScript to illustrate fill() method
var arr1 = [1,2,3,4,5,6,7,8,9,10];
//value=20 , start index=2,fill arry with 20 
arr1.fill(20,2); 
document.write(arr1);
// expected output: 1,2,20,20,20,20,20,20,20,20
</script>
Test it Now

Output:

1,2,20,20,20,20,20,20,20,20

Example 3

JavaScript TypedArray fill(value,start,end) method

<script type="text/javascript">
// JavaScript to illustrate fill() method
// Input array 
var arr1 = [1,2,3,4,5,6,7,8,9,10];
//value=20 , start index=2, last index=3 
//fill arry with 20 
arr1.fill(20,2,3); 
document.write(arr1);
// expected output: 1,2,20,4,5,6,7,8,9,10
</script>
Test it Now

Output:

1,2,20,4,5,6,7,8,9,10

Next TopicJavaScript TypedArray Object




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