JavaScript substr() Method
 JavaScript String Object
Definition and Usage
The substr() method extracts the characters from a string, beginning at
"start" and through the specified number of character,
and returns the new sub string.
Syntax
| string.substr(start,length) |
| Parameter |
Description |
| start |
Required. The index where to start the extraction. First character is at
index 0 |
| length |
Optional. The number of characters to extract. If omitted, it extracts the
rest of the string |
Browser Support
The substr() method is supported in all major browsers.
Tips and Notes
Tip: To extract characters from the end of the string, use a negative start number (This does not work in IE).
Example
Example
Extract characters from a string:
<script type="text/javascript">
var str="Hello world!";
document.write(str.substr(3)+"<br />");
document.write(str.substr(3,4));
</script>
|
The output of the code above will be:
Try it yourself »
|
JavaScript String Object
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