Definition and Usage The splice() method is used to remove and add new elements to an array. Syntax arrayObject.splice(index,howmany,...
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 |
