Javascript-differences between slice and splice

ArticleDirectory

• 1. Slice
• 2. splice

Today, I reviewed JavaScript and saw the array method. Two of them are similar: splice and splice. They look very similar, but they have a P, but their usage is quite different.

1. Slice

Slice is used to create a new array by specifying the elements in an array, that is, the original array will not change

 
VaRColor =NewArray ('red', 'Blue ', 'yellow', 'black');VaRColor2 = color. Slice (1, 2); Alert (color );//OutputRed, blue, yellow, black
 

Alert (color2 );//OutputBlue; Note: there is only one value for the second item.
 

2. splice

Splice is the most powerful method of array functions in JS. It can delete, insert, and replace array elements,The returned value is the operated value..

Splice deletion:Color. splice (1, 2)(Delete items 1 and 2 in color );

Splice insert:Color. splice (1, 0, 'Brown ', 'pink ')(Insert two values before the element whose color key value is 1 );

Splice replacement:Color. splice (1, 2, 'Brown ', 'pink ')(Replace element 1 and element 2 in color );

   var  color =  New  array ('red', 'blue', 'yellow ', 'black' );   var  color2 = color. splice (000000, 'Brown ', 'pink' ); alert (color );   //    Red, blue, brown, pink     alert (color2 );  //    yellow, black