Definition and Usage The lastIndexOf() method returns the position of the last occurrence of a specified string value, searching backwards ...
Definition and Usage
The lastIndexOf() method returns the position of the last occurrence of a specified string value, searching backwards from the specified position in a string.Syntax
stringObject.lastIndexOf(searchvalue,fromindex) |
| Parameter | Description |
|---|---|
| search | Required. Specifies a string value to search for |
| fromindex | Optional. Specifies where to start the search. Starting backwards in the string |
Tips and Notes
Note: The lastIndexOf() 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.lastIndexOf("Hello") + "<br />"); document.write(str.lastIndexOf("World") + "<br />"); document.write(str.lastIndexOf("world")); </script> |
The output of the code above will be:
0 -1 6 |
