JavaScript 字符串 string substring子字符串方法

JavaScript 字符串 string substring子字符串方法

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

   <body>

      <script type = "text/javascript">
         var str = "Apples are round, and apples are juicy.";

         document.write("(1,2): "    + str.substring(1,2));
         document.write("<br />(0,10): "   + str.substring(0, 10));
         document.write("<br />(5): "      + str.substring(5));
      </script>

   </body>
</html>