JavaScript substring() Method
JavaScript String Object
Definition and Usage
The substring() method extracts the characters in a string between two specified indices,
and returns a new string.
Syntax
| stringObject.substring(indexA,indexB) |
| Parameter |
Description |
| indexA |
Required. Where to start the extraction. Must be a numeric
value. Starts at 0 |
| indexB |
Optional. Where to stop the extraction. Must be a numeric
value. If omitted, substring() extracts to the end of the string |
Example
Example
Extract some characters from a string:
<script type="text/javascript">
var str="Hello world!";
document.write(str.substring(3)+"<br />");
document.write(str.substring(3,7));
</script>
|
The output of the code above will be:
Try it yourself »
|
JavaScript String Object

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