在onethink手机注册验证码js倒计时函数

/*
  倒计时函数
 */
function yb_zhuce_fasongyanzhengma_daojishi(class_name,miao){
$("."+class_name).html("剩余"+miao+"秒");
if(miao>=1){
miao = miao-1;
//重新调用
window.setTimeout(function(){
yb_zhuce_fasongyanzhengma_daojishi(class_name,miao);
},1000); 
}
else{
$("."+class_name).html("重发验证码");
}
}