• js实现多图展示 鼠标移入图片放大


    <!doctype html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>多图展示</title>
    <style>
    ul,li{list-style:none;}
    img{border:none;}
    #list{400px; margin:30px auto; position:relative;}
    #list li{120px; height:100px; display:block; float:left; margin-left:10px; margin-bottom:10px;}
    #list li img{100%; height:100%;}
    </style>
    <script src="js/movement.js" type="text/javascript"></script>
    <script type="text/javascript">
    window.onload = function(){
    	var oList = document.getElementById("list");
    	var aLi = oList.getElementsByTagName("li");
    	var iMinZindex = 2;
    	for(var i=0;i<aLi.length;i++){
    		aLi[i].style.left = aLi[i].offsetLeft+'px';
    		aLi[i].style.top = aLi[i].offsetTop+'px';
    	}	
    	for(var i=0;i<aLi.length;i++){
    		aLi[i].style.position = 'absolute';	
    		aLi[i].style.margin = '0';	
    	}
    	//缩放
    	for(var i=0;i<aLi.length;i++){
    		aLi[i].onmouseover = function(){
    			this.style.zIndex = iMinZindex++;
    			move(this,{200,height:160,marginLeft:-40,marginTop:-30});   //(200-120)/2=40
    		}
    		aLi[i].onmouseout = function(){
    			move(this,{120,height:100,marginLeft:0,marginTop:0});
    		}
    	}
    }
    </script>
    </head>
    <body>
    <ul id="list">
        <li><img src="images/1.jpg"></li>
        <li><img src="images/2.jpg"></li>
        <li><img src="images/3.jpg"></li>
        <li><img src="images/4.jpg"></li>
        <li><img src="images/5.jpg"></li>
        <li><img src="images/1.jpg"></li>
        <li><img src="images/4.jpg"></li>
        <li><img src="images/2.jpg"></li>
        <li><img src="images/5.jpg"></li>
    </ul>
    </body>
    </html>
    
    附件:
    movement.js代码
    function move(obj,json,fn){
      clearInterval(obj.timer);
      obj.timer=setInterval(function(){
        var onoff=true;  
        for(var attr in json){
          var icur=0;
          if(attr=='opacity'){
            icur=Math.round(parseFloat(getStyle(obj,attr))*100);
          }else{
            icur=parseInt(getStyle(obj,attr));
    	 }
          var speed=(json[attr]-icur)/10;
          speed=speed>0?Math.ceil(speed):Math.floor(speed);
          //检测是否停止
          if(icur !=json[attr]){              
            onoff=false;                
          }
          if(attr=='opacity'){
            //IE
            obj.style.filter="alpha(opacity='+icur+speed+')";     
            //firefox
            obj.style.opacity=(icur+speed)/100;
          }else{
            obj.style[attr]= icur+speed+'px';	
          }	
        }
        if(onoff){               
          clearInterval(obj.timer);
          if(fn){
            fn();	
        }
      },30);	
    }
    function getStyle(obj,attr){
      //currentStyle针对IE浏览器 getComputedStyle针对火狐浏览器
      if(obj.currentStyle){
    	return currentStyle[attr];
      }else{
    	return 	getComputedStyle(obj,false)[attr];
      }
    }
    

     效果展示:

     

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  • 原文地址:https://www.cnblogs.com/banzhiyan304053078/p/Amon.html
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