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JavaScript unshift() Method
Example
Add new items to the beginning of an array:
var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.unshift("Lemon","Pineapple");
fruits.unshift("Lemon","Pineapple");
The result of fruits will be:
Lemon,Pineapple,Banana,Orange,Apple,Mango
Try it yourself »
Definition and Usage
The unshift() method adds new items to the beginning of an array, and returns the new length.
Note: This method changes the length of an array.
Tip: To add new items at the end of an array, use the push() method.
Browser Support
The unshift() method is supported in all major browsers.
Note: The unshift() method returns undefined in Internet Explorer 8 and earlier.
Syntax
array.unshift(item1,item2, ..., itemX)
Parameter Values
| Parameter | Description |
|---|---|
| item1,item2, ..., itemX | Required. The item(s) to add to the beginning of the array |
Return Value
| Type | Description |
|---|---|
| Number | The new length of the array |
Technical Details
| JavaScript Version: | 1.2 |
|---|
JavaScript Array Object
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