You can edit / change the code and click run button <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>For Loop Example</title> <script>var clicky_site_ids = clicky_site_ids || []; clicky_site_ids.push(101319977);</script><script async src="//static.getclicky.com/js"></script> <h1>JavaScript For Loop Example</h1> <script language="javascript" type="text/javascript"> document.write("<h2>Multiplication table for 5"); for (var n = 0; n <= 10; n++) { document.write("5 X ",n," = ",5*n,"<br>"); } </script>