jQuery生成随机数字-www.
ul{list-style:decimal;}



   
   

      

      

      

      

      

      

      

   

   
        var a = {}, getNum = function(){
 var b;
 while(true){
  b = Math.random().toString().substr(2, 7)/100;
  if(b.toString().length === 8 && a[b] === undefined){
   return a[b] = b;
  }
 }
       };
        $('#Test').on('click', function(){
            $('li').each(function(){
                $(this).html(getNum());
            });
        });