JavaScript 嵌套函数

JavaScript 嵌套函数

<html>
   <head>

      <script type = "text/javascript">
         <!--
            function hypotenuse(a, b) {
               function square(x) { return x*x; }
               return Math.sqrt(square(a) + square(b));
            }

            function secondFunction() {
               var result;
               result = hypotenuse(1,2);
               document.write ( result );
            }
         //-->
      </script>

   </head>
   <body>
      <p>Click the following button to call the function</p>

      <form>
         <input type = "button" onclick = "secondFunction()" value = "Call Function">
      </form>

      <p>Use different parameters inside the function and then try...</p>

   </body>
</html>