JavaScript indexOf() Method
Complete String Object Reference
Definition and Usage
The indexOf() method returns the position of the first occurrence of a specified string
value in
a string.
Syntax
stringObject.indexOf(searchvalue,fromindex)
|
Parameter |
Description |
searchvalue |
Required. Specifies a string value to search for |
fromindex |
Optional. Specifies where to start the search |
Tips and Notes
Note: The indexOf() method is case sensitive!
Note: This method returns -1 if the string value to search for never
occurs.
Example
In this example we will do different searches within a "Hello world!" string:
<script type="text/javascript">
var str="Hello world!";
document.write(str.indexOf("Hello") + "<br />");
document.write(str.indexOf("World") + "<br />");
document.write(str.indexOf("world"));
</script>
|
The output of the code above will be:
Try-It-Yourself Demos
indexOf()
How to use indexOf() to search within a string.
Complete String Object Reference
 |

|
|
See why there are 20,000+ Ektron integrations worldwide.
Request an INSTANT DEMO or download a FREE TRIAL today. |
|
|
|