JavaScript Array fill()
Examples
Fill all the elements with a value:
const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.fill("Kiwi");
Try it Yourself »
Fill the last two elements:
const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.fill("Kiwi", 2, 4);
Try it Yourself »
Definition and Usage
The fill() method fills specified elements in an array with a value.
The fill() method overwrites the original array.
Start and end position can be specified. If not, all elements will be filled.
Syntax
array.fill(value, start, end)
Parameters
| Parameter | Description |
| value | Required. The value to fill in. |
| start | Optional. The start index (position). Default is 0. |
| end | Optional. The stop index (position). Default is array length. |
Return Value
| Type | Description |
| An array | The filled array. |
Browser Support
fill() is an ECMAScript6 (ES6) feature.
ES6 (JavaScript 2015) is supported in all modern browsers:
| Chrome | Edge | Firefox | Safari | Opera |
| Yes | Yes | Yes | Yes | Yes |
fill() is not supported in Internet Explorer 11 (or earlier).
