JavaScript | Array.fill() Method

Fills given range of array elements with given value.
Syntax:

arr.fill(value[, start[, end]])

Parameters:

  • Value:- Value to be filled.
  • Start:- Start index (included) and its defaults value is 0.
  • End:- End index (excluded) and its default index is this.length.

Return value:
It return the modified array.
Browser Support:
Here in 2nd column int values is the version of the corresponding feature browser.
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<script>
  // input array contain some elements.
  var array = [ 1, 2, 3, 4 ];
  
  // Here array.fill function fills with 0
  // from position 2 till position 3.
  console.log(array.fill(0, 2, 4));
</script>

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Output:


> Array [1, 2, 0, 0]



Program 2:

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<script> 


  // input array contain some elements. 


  var array = [ 1, 2, 3, 4 ]; 


  


  // Here array.fill function fill with  


  // 9 from position 2 till end. 


  console.log(array.fill(9, 2)); 


</script> 



















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Output:


> Array [1, 2, 9, 9]



Program 3:

Let’s see JavaScript program:













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<script> 


  // input array contain some elements. 


  var array = [ 1, 2, 3, 4 ]; 


  


  // Here array.fill function fill with 


  // 6 from  position 0 till end. 


  console.log(array.fill(6)); 


</script> 



















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Output:


> Array [6, 6, 6, 6]



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