JavaScript concat() Method
 Complete Array Object Reference
Definition and Usage
The concat() method is used to join two or more arrays.
This method does not change the existing arrays, it only returns a copy of
the joined arrays.
Syntax
arrayObject.concat(arrayX,arrayX,......,arrayX)
|
| Parameter |
Description |
| arrayX |
Required. One or more array objects to be joined to an array |
Example 1
Here we create two arrays and show them as one using concat():
<script type="text/javascript">
var arr = new Array(3);
arr[0] = "Jani";
arr[1] = "Tove";
arr[2] = "Hege";
var arr2 = new Array(3);
arr2[0] = "John";
arr2[1] = "Andy";
arr2[2] = "Wendy";
document.write(arr.concat(arr2));
</script>
|
The output of the code above will be:
Jani,Tove,Hege,John,Andy,Wendy
|
Example 2
Here we create three arrays and show them as one using concat():
<script type="text/javascript">
var arr = new Array(3);
arr[0] = "Jani";
arr[1] = "Tove";
arr[2] = "Hege";
var arr2 = new Array(3);
arr2[0] = "John";
arr2[1] = "Andy";
arr2[2] = "Wendy";
var arr3 = new Array(2);
arr3[0] = "Stale";
arr3[1] = "Borge";
document.write(arr.concat(arr2,arr3));
</script>
|
The output of the code above will be:
Jani,Tove,Hege,John,Andy,Wendy,Stale,Borge
|
Try-It-Yourself Demos
How to join two arrays with the concat() method
How to join three arrays with the concat() method
Complete Array Object Reference
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