Jan", "Mar", "Apr", "May"]
    

###  Using toSpliced() on sparse arrays

The ` toSpliced() ` method always creates a dense array.

js

    
    
    const arr = [1, , 3, 4, , 6];
    console.log(arr.toSpliced(1, 2)); // [1, 4, undefined, 6]
    

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

The ` toSpliced() ` method reads the ` length ` property of ` this ` . It then
reads the integer-keyed properties needed and writes them into the new array.

js

    
    
    const arrayLike = {
      length: 3,
      unrelated: "foo",
      0: 5,
      2: 4,
    };
    console.log(Array.prototype.toSpliced.call(arrayLike, 0, 1, 2, 3));
    // [2, 3, undefined, 4]
    

##  Specifications

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

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

##  See also

  * [ Polyfill of ` Array.prototype.toSpliced ` in ` core-js ` ](https://github.com/zloirock/core-js#change-array-by-copy)
  * [ ` Array.prototype.splice() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice)
  * [ ` Array.prototype.toReversed() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toReversed)
  * [ ` Array.prototype.toSorted() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSorted)
  * [ ` Array.prototype.with() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/with)

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