JavaScript 数组 every 方法

JavaScript 数组 every 方法

<html>
   <head>
      <title>JavaScript Array every Method</title>
   </head>

   <body>

      <script type = "text/javascript">
         if (!Array.prototype.every) {
            Array.prototype.every = function(fun /*, thisp*/) {
               var len = this.length;
               if (typeof fun != "function")
               throw new TypeError();

               var thisp = arguments[1];
               for (var i = 0; i < len; i++) {
                  if (i in this && !fun.call(thisp, this[i], i, this))
                  return false;
               }
               return true;
            };
         }

         function isBigEnough(element, index, array) {
            return (element >= 10);
         }

         var passed = [12, 5, 8, 130, 44].every(isBigEnough);
         document.write("First Test Value : " + passed );

         passed = [12, 54, 18, 130, 44].every(isBigEnough);
         document.write("Second Test Value : " + passed );
      </script>

   </body>
</html>