<html><head> <title>String Type Location Methods Example</title> <script type="text/javascript"> var stringValue = "hello world"; alert(stringValue.indexOf("o")); //4 alert(stringValue.lastIndexOf("o")); //7 alert(stringValue.indexOf("o", 6)); //7 alert(stringValue.lastIndexOf("o", 6)); //4 </script></head><body></body></html>