JavaScript concat() Method
 JavaScript Array Object
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 |
Examples
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
|
Try it yourself »
|
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 »
|
JavaScript Array Object
 |
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