Bootstrap框架结合jQuery仿百度换肤功能实例解析

<div class="container-fluid b-icons">
 <div class="b-icons-item" id="b-box"><a href="javascript:;">宝箱</a></div>
 <div class="b-icons-item" id="b-change"><a href="javascript:;">换肤</a></div>
 <div class="b-icons-item" id="b-msg"><a href="javascript:;">消息</a></div>
 </div>
 <div class="s-icons">
 <div class="s-icons-bottom">
  <div class="icon-items">
  <ul>
   <li><a href="javascript:;">热门</a></li>
   <li><a href="javascript:;">游戏</a></li>
   <li><a href="javascript:;">卡通</a></li>
   <li><a href="javascript:;">明星</a></li>
   <li><a href="javascript:;">风景</a></li>
   <li><a href="javascript:;">简约</a></li>
   <li><a href="javascript:;">小清新</a></li>
   <li><a href="javascript:;">自定义</a></li>
  </ul>
  </div>
  <div class="icon-up">
  <div>
   <i class="glyphicon glyphicon-arrow-up"></i>
   <a href="javascript:;">收起</a>
  </div>
  </div>
  <div style="clear: both"></div>
  <div class="icon-bottom">
  <ul>
   <li class="col-lg-1 col-lg-offset-1 dpic"><img src="images/0.jpeg" title="背景图"></li>
   <li class="col-lg-1 dpic"><img src="images/1.jpeg" title="背景图"></li>
   <li class="col-lg-1 dpic"><img src="images/2.png" title="背景图"></li>
   <li class="col-lg-1 dpic"><img src="images/3.jpg" title="背景图"></li>
   <li class="col-lg-1 dpic"><img src="images/4.jpg" title="背景图"></li>
   <li class="col-lg-1 dpic"><img src="images/5.jpg" title="背景图"></li>
   <li class="col-lg-1 dpic"><img src="images/6.jpeg" title="背景图"></li>
  </ul>
  </div>
 </div>
 </div>

*{
 margin:0px;
 padding:0px;
 font-family: "Microsoft Yahei", Helvetica, sans-serif, Lato;
}
.b-icons{
 background-color: #569caa;
 height: 32px;
 line-height: 32px;
}
.b-icons .b-icons-item{
 float: left;
}
.b-icons #b-box{
 margin-left: 10%;
}
.b-icons #b-change,.b-icons #b-msg{
 margin-left:20px;
}
.b-icons #b-box,.b-icons #b-change,.b-icons #b-msg{
 text-decoration:underline;
}
.b-icons #b-box a,.b-icons #b-change a,.b-icons #b-msg a{
 font-size: 12px;
 color:#fff;
}
.s-icons{
 width: 100%;
 position: fixed;
 left: 0px;
 top:0px;
 background-color: #fff;
 height: 175px;
 display: none;
}

.s-icons .s-icons-bottom{
 width: 100%;
 height: 35px;
 border-bottom: 1px solid #808080;
}
.s-icons .icon-items{
 margin-left:15%;
}
.s-icons .icon-items>ul li{
 height: 30px;
 line-height: 30px;
 float: left;
 list-style: none;
 margin-left:10px;
 margin-right:10px;
}
.s-icons .icon-items a{
 color:#666;
}
.s-icons .icon-up{
 line-height: 30px;
 float: right;
 margin-right:10%
}
.s-icons .icon-up>div a,.s-icons .icon-up>div i{
 color: #2544ff;
}
.s-icons .icon-bottom{
 width: 100%;
 height: 100px;
 margin-left: 15%;
 margin-top:20px;
}
.s-icons .icon-bottom .dpic{
 text-align: center;
 list-style: none;
 margin-left: 5px;
}
.s-icons .icon-bottom .dpic img{
 width: 120px;
 height:80px;
}

 $(function () {
 var bgig = localStorage.getItem("bgig");
 if (bgig == null) {
 $("body").css({ "background-image": "url(images/1.jpeg)", "background-size": "cover" });
 }
 else {
 $("body").css({ "background-image": "url(" + bgig + ")", "background-size": "cover" });
 }

 $("#b-change a").click(function () {
 $(".s-icons").show(500);
 });
 $(".icon-up a").click(function () {
 $(".s-icons").hide(500);
 });

 $(".dpic img").click(function () {
 var src = $(this).attr("src");
 $("body").css({ "background-image": "url(" + src + ")","background-repeat":"no-repeat","background-size":"100%" });
 localStorage.setItem("bgig", src);
 });

});