The difference between the splice method and the slice method of the "JS" array

1.splice methods and slice are arrays of methods

The 2.splice method has 3 kinds of functions

For example, arr=[1,2,3,4,5,6];

Splice method

Delete	Arr.splice (1, 1);	The returned value is the deleted element, and the type is Object
Replace	Arr.splice (1, 1, ' a ');	The returned value is the replaced element, and the type is Object
Insert	Arr.splice (1, 0, ' A ', ' B ');	The return value is an empty array, type Object Note: The resulting new array is [1, ' A ', ' B ', 2,3,4,5,6]

3.slice method

Note that the method does not modify the array, but instead returns a subarray.

Example:

<script type= "Text/javascript" >var arr = new Array (3) arr[0] = "George" arr[1] = "John" arr[2] = "Thomas" Document.writ E (arr + "<br/>") document.write ( arr.slice(1) + "<br/>") document.write (arr) </script>

Output:

George,john,thomasjohn,thomasgeorge,john,thomas

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The difference between the splice method and the slice method of the "JS" array