11.2.13 pow方法.html

javascript即用即差核心对象手册

<script>
   with(document)
   {
      write(yx(3,2));
      write(yx(0.2,3));   
      write(yx(12,-0.2));
   }
  //自定义函数，计算并输出指定的幂运算
   function yx(y,x)
   {
      var ystr=new String(y);
      var xstr=new String(x);
      var str=ystr+xstr.sup()+"="
      str+=Math.pow(y,x);
      return str+"<br>";
   }
</script>