移动端安卓定位随键盘浮起

1. var client_h = document.documentElement.clientHeight;  
2.             $(window).on("resize",function(){  
3.                 var body_h =  document.body.scrollHeight;  
4.                 if(body_h < client_h){  
5.                     $(".operate").removeClass("fixed");  
6.                     console.log("小了");  
7.                 }else{  
8.                     console.log("正常");  
9.                     $(".operate").addClass("fixed");  
10.                 }  
11.             });