Jesús Moreno

Datos extraidos de: http://www.w3schools.com/jsref/jsref_splice.asp

JavaScript Array splice() Method

Add items to the array:

var fruits = ["Banana", "Orange", "Apple", "Mango"];

fruits.splice(2, 0, "Lemon", "Kiwi");

The result of fruits will be:

Banana,Orange,Lemon,Kiwi,Apple,Mango

More "Try it Yourself" examples below.

The splice() method adds/removes items to/from an array, and returns the removed item(s).

Note: This method changes the original array.

The numbers in the table specify the first browser version that fully supports the method.

Method
splice()	1.0	5.5	1.0	Yes	Yes

array.splice(index,howmany,item1,.....,itemX)

Parameter	Description
index	Required. An integer that specifies at what position to add/remove items, Use negative values to specify the position from the end of the array
howmany	Required. The number of items to be removed. If set to 0, no items will be removed
item1, ..., itemX	Optional. The new item(s) to be added to the array

Return Value:	A new Array, containing the removed items (if any)
JavaScript Version:	1.2

At position 2, add the new items, and remove 1 item:

var fruits = ["Banana", "Orange", "Apple", "Mango"];

fruits.splice(2, 1, "Lemon", "Kiwi");

The result of fruits will be:

Banana,Orange,Lemon,Kiwi,Mango

At position 2, remove 2 items:

var fruits = ["Banana", "Orange", "Apple", "Mango"];

fruits.splice(2, 2);

The result of fruits will be:

Banana,Orange