jQuery防止点击事件重复提交

定义全局标示符

//代码片段
var ddClick=false;
 $(".cai").bind('click',function(){
          if(ddClick){return;}
          post_dig('cai');
 });

 $(".zan").bind('click',function(){
          if(ddClick){return;}
           post_dig('zan');
 });

function post_dig(type){
      ddClick=true;
        $.ajax({
             type : 'POST',
             url : '/scripts/dig.php',
             data: {act:'update',type:type},
             success : function(msg){
                  ddClick=false;
            }
  });
 }