摘要：<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script><script type="text/javascript">$(document).ready(function(){ /* ----- 側(cè)邊懸浮 ---- */

<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){

/* ----- 側(cè)邊懸浮 ---- */
$(document).on("mouseenter", ".suspension .a", function(){
var _this = $(this);
var s = $(".suspension");
var isService = _this.hasClass("a-service");
var isServicePhone = _this.hasClass("a-service-phone");
var isQrcode = _this.hasClass("a-qrcode");
if(isService){ s.find(".d-service").show().siblings(".d").hide();}
if(isServicePhone){ s.find(".d-service-phone").show().siblings(".d").hide();}
if(isQrcode){ s.find(".d-qrcode").show().siblings(".d").hide();}
});
$(document).on("mouseleave", ".suspension, .suspension .a-top", function(){
$(".suspension").find(".d").hide();
});
$(document).on("mouseenter", ".suspension .a-top", function(){
$(".suspension").find(".d").hide();
});
$(document).on("click", ".suspension .a-top", function(){
$("html,body").animate({scrollTop: 0});
});
$(window).scroll(function(){
var st = $(document).scrollTop();
var $top = $(".suspension .a-top");
if(st > 400){
$top.css({display: 'block'});
}else{
if ($top.is(":visible")) {
$top.hide();
}
}
});

});
</script>

批改老師：天蓬老師批改時間：2019-03-25 09:16:26
老師總結(jié)：寫得還不錯, 就是代碼的風(fēng)格, 不敢恭維