JavaScript splice() Method
 Complete Array Object Reference
Definition and Usage
The splice() method is used to remove and add new elements to an array.
Syntax
arrayObject.splice(index,howmany,element1,.....,elementX)
|
| Parameter |
Description |
| index |
Required. Specify where to add/remove elements. Must
be a number |
| howmany |
Required Specify how many elements should be removed. Must
be a number, but can be "0" |
| element1 |
Optional. Specify a new element to add to the array |
| elementX |
Optional. Several elements can be added |
Example
In this example we will create an array and add an element to it:
<script type="text/javascript">
var arr = new Array(5);
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";
document.write(arr + "<br />");
arr.splice(2,0,"Lene");
document.write(arr + "<br />");
</script>
|
The output of the code above will be:
Jani,Hege,Stale,Kai Jim,Borge
Jani,Hege,Lene,Stale,Kai Jim,Borge
|
Example
In this example we will remove the element at index 2 ("Stale"), and add a
new element ("Tove") there instead:
<script type="text/javascript">
var arr = new Array(5);
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";
document.write(arr + "<br />");
arr.splice(2,1,"Tove");
document.write(arr);
</script>
|
The output of the code above will be:
Jani,Hege,Stale,Kai Jim,Borge
Jani,Hege,Tove,Kai Jim,Borge
|
Example
In this example we will remove three elements starting at index 2 ("Stale"), and add a
new element ("Tove") there instead:
<script type="text/javascript">
var arr = new Array(5);
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";
document.write(arr + "<br />");
arr.splice(2,3,"Tove");
document.write(arr);
</script>
|
The output of the code above will be:
Jani,Hege,Stale,Kai Jim,Borge
Jani,Hege,Tove
|
Try-It-Yourself Demos
splice()
How to use splice() to change an array.
Complete Array Object Reference
 |
|
Get Your Diploma!
W3Schools' Online Certification Program is the perfect solution for busy
professionals who need to balance work, family, and career building.
The HTML Certificate is for developers who want to document their knowledge of HTML, XHTML, and CSS.
The JavaScript Certificate is for developers who want to document their knowledge of JavaScript and the HTML DOM.
The ASP Certificate is for developers who want to document their knowledge of ASP, SQL, and ADO.
|
|
HOME
Printer friendly page
