JavaScript 字符串string link方法

<html>
   <head>
      <title>JavaScript String link() Method</title>
   </head>

   <body>

      <script type = "text/javascript">
         var str = new String("Hello world");
         var URL = "http://www.codingdict.com";

         alert(str.link( URL ));
      </script>

   </body>
</html>