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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
array.concat(array2, array3, ..., arrayX);
| Parameter | Description |
|---|---|
| array2, array3, ..., arrayX | Required. The arrays to be joined |
Browser Support
The concat() method is supported in all major browsers.
Examples
Example 1
Join two arrays:
<script type="text/javascript">
var parents = ["Jani", "Tove"];
var children = ["Cecilie", "Lone"];
var family = parents.concat(children);
document.write(family);
</script>
var parents = ["Jani", "Tove"];
var children = ["Cecilie", "Lone"];
var family = parents.concat(children);
document.write(family);
</script>
The output of the code above will be:
Jani,Tove,Cecilie,Lone
Try it yourself »
Example 2
Join three arrays:
<script type="text/javascript">
var parents = ["Jani", "Tove"];
var brothers = ["Stale", "Kai Jim", "Borge"];
var children = ["Cecilie", "Lone"];
var family = parents.concat(brothers, children);
document.write(family);
</script>
var parents = ["Jani", "Tove"];
var brothers = ["Stale", "Kai Jim", "Borge"];
var children = ["Cecilie", "Lone"];
var family = parents.concat(brothers, children);
document.write(family);
</script>
The output of the code above will be:
Jani,Tove,Stale,Kai Jim,Borge,Cecilie,Lone
Try it yourself »
JavaScript Array Object
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Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.