s = Array(5).fill("girl", 0);
    

Note that the array was initially a [ sparse array ](/en-
US/docs/Web/JavaScript/Guide/Indexed_collections#sparse_arrays) with no
assigned indices. ` fill() ` is still able to fill this array.

###  Calling fill() on non-array objects

The ` fill() ` method reads the ` length ` property of ` this ` and sets the
value of each integer-keyed property from ` start ` to ` end ` .

js

    
    
    const arrayLike = { length: 2 };
    console.log(Array.prototype.fill.call(arrayLike, 1));
    // { '0': 1, '1': 1, length: 2 }
    

##  Specifications

Specification  
---  
[ ECMAScript Language Specification  
#  sec-array.prototype.fill  ](https://tc39.es/ecma262/multipage/indexed-
collections.html#sec-array.prototype.fill)  
  
##  Browser compatibility

BCD tables only load in the browser  with JavaScript enabled. Enable
JavaScript to view data.

##  See also

  * [ Polyfill of ` Array.prototype.fill ` in ` core-js ` ](https://github.com/zloirock/core-js#ecmascript-array)
  * [ Indexed collections ](/en-US/docs/Web/JavaScript/Guide/Indexed_collections) guide 
  * [ ` Array ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)
  * [ ` TypedArray.prototype.fill() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/fill)

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