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Example sharing of jquery implementation of image enlargement and click switching function

小云云Original: 2018-05-15 17:15:272788browse

This article mainly introduces jquery to realize image enlargement and click switching in detail. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

html code

<body>
<p class="boss">
 <p class="bigimg">
  <img src="img/s1.jpg" height="350" width="350" id="spic"> 
  <p id="mask"></p>
 </p>
 <p class="xia"> <a class="prev"><</a> <a class="next">></a>
  <p class="items">
  <ul>
   <li><img src="img/b1.jpg" height="56" width="56"></li>
   <li><img src="img/b2.jpg" height="56" width="56"></li>
   <li><img src="img/b3.jpg" height="56" width="56"></li>
   <li><img src="img/b1.jpg" height="56" width="56"></li>
   <li><img src="img/b3.jpg" height="56" width="56"></li>
   <li><img src="img/b1.jpg" height="56" width="56"></li>
   <li><img src="img/b1.jpg" height="56" width="56"></li>
   <li><img src="img/b1.jpg" height="56" width="56"></li>
   <li><img src="img/b2.jpg" height="56" width="56"></li>
   <li><img src="img/b3.jpg" height="56" width="56"></li>
  </ul>
  </p>
 </p>
 <p class="zoom">
  <img src="img/b1.jpg" id="bpic">
 </p>
</p>

<script type="text/javascript" src="js/jquery-1.8.3.js"></script>
<script type="text/javascript" src="js/js6.js"></script>

css code

*{
margin: 0;
padding:0;
}
li{
 list-style: none;
}
.boss{
 position:relative;
 width: 350px;
}
.bigimg{
 width: 350px;
 border: 1px solid #ccc;
 height: 350px;
 position: relative;
}
#mask{
 width: 150px;
 height: 150px;
 background: rgba(255,255,255,0.5);
 position: absolute;
 top: 0;
 left: 0;
 border:1px solid #ccc;
 cursor: pointer;
}

.xia{
 clear:both;
 margin-top:5px;
 width:352px;
}
.xia .prev{
 float:left;
 margin-right:4px;
}
.xia .next{
 float:right;
}
.xia .prev,.xia .next{
 display:block;
 text-align:center;
 width:10px;
 height:54px; 
 line-height:54px;
 border:1px solid #CCC;
 background:#EBEBEB;
 cursor:pointer;
 text-decoration:none;
}
.xia .items{
 float:left;
 position:relative;
 width:322px;
 height:56px;
 overflow:hidden;
}
.xia .items ul{
 position:absolute;
 height:56px;
}
.xia .items ul li{
 float:left;
 width:64px;
 text-align:center;
}
 .xia .items ul li img{
 border:1px solid #CCC;
 padding:2px;
 width:50px;
 height:50px;
}
.xia .items ul li img:hover{
 border:2px solid #FF6600;
 padding:1px;
} 
.zoom{
 width: 350px;
 height: 410px;
 border:1px solid #ccc;
 position: absolute;
 top: 0;
 right: -360px;
 overflow: hidden;
 display: none;
}

jquery code

var $spic=$("#spic");
var $mask=$("#mask");
var $bigimg=$(".bigimg");
var $bpic=$("#bpic");
$(".items img").on("mouseover",function(){
 
 $spic.attr("src",$(this).attr("src"));//鼠标滑过切换
 $bpic.attr("src",$(this).attr("src"));

});

var l=$bigimg.eq(0).offset().left;
var t=$bigimg.eq(0).offset().top;
var width1=$mask.outerWidth()/2;
var height1=$mask.outerHeight()/2;

var maxl=$bigimg.width()-$mask.outerWidth();
var maxt=$bigimg.height()-$mask.outerHeight();

var bili=$bpic.width()/$spic.width();

$bigimg.mouseover(function(e){
 var maskl=e.clientX-l-width1,maskt=e.clientY-t-height1;
 if(maskl<0) maskl=0;
 if(maskt<0) maskt=0;
 if(maskl>maxl)maskl=maxl;
 if(maskt>maxt)maskt=maxt;

 $mask.css({"left":maskl,"top":maskt});

 $(".zoom").show();

 $bpic.css({"margin-left":-maskl*bili,"margin-top":-maskt*bili});
});


var marginLeft=0
$(".next").click(function(){

 marginLeft=marginLeft-63.5;
 if(marginLeft<-254) marginLeft=-254;

 $(".items ul").css({"margin-left":marginLeft})
})
$(".prev").click(function(){

 marginLeft=marginLeft+63;
 if(marginLeft>0) marginLeft=0;

 $(".items ul").css({"margin-left":marginLeft})
});

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