insert into array js

1arr.splice(index, 0, item);
2//explanation:
3inserts "item" at the specified "index",
4deleting 0 other items before it

1var colors=["red","blue"];
2var index=1;
3
4//insert "white" at index 1
5colors.splice(index, 0, "white");   //colors =  ["red", "white", "blue"]
6

1// for me lol... pls don't delete!
2// use splice to insert element
3// arr.splice(index, numItemsToDelete, item); 
4var list = ["hello", "world"]; 
5list.splice( 1, 0, "bye"); 
6//result
7["hello", "bye", "world"]
8

1myArray.splice(index, 0, item);

1array.splice(index, 0, value);

1Array.prototype.insert = function ( index, item ) {
2    this.splice( index, 0, item );
3};