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<html> <head> <title>JavaScript String lastIndexOf() Method</title> </head> <body> <script type = "text/javascript"> var str1 = new String( "This is string one and again string" ); var index = str1.lastIndexOf( "string" ); document.write("lastIndexOf found String :" + index ); document.write("<br />"); var index = str1.lastIndexOf( "one" ); document.write("lastIndexOf found String :" + index ); </script> </body> </html>