javascript 鼠标点击图片放大或缩小

作者：袖梨 2022-06-25

提示：您可以先修改部分代码再运行

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>javascript 鼠标点击图片放大或缩小</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312">

<style type="text/<a href="http://www.111com.net/cssdiv/css.html" target="_blank">css</a>">
#box{border:solid 1px #000;margin:10px 0 0 10px;overflow:hidden;}
#box img{width:100%;height:100%;}
</style>
<script type="text/javascript">
function $(id){ return typeof id=="string"? document.getElementById(id):id;}
function $$(tag,parent) {return ($(parent)||document).getElementsByTagName(tag);}
function zoomImg(container){
  var obox=$(container), w=obox.clientWidth, h=obox.clientHeight, zoom=false, pic=$$("img","box")[0],
  img=new Image(), W, H;
  img.src=pic.src;
  W=img.width; H=img.height;
  var flowX=W-w, flowY=H-h, bound=obox.getBoundingClientRect();
  window.onscroll=function(){bound=obox.getBoundingClientRect();};
  obox.onclick=function(e){
    e=e||window.event;
    if(zoom){
     zoom=false;
     pic.style.;
     pic.style.;
     pic.style.marginLeft=pic.style.marginTop="0px";
    }
    else {
     zoom=true;
     pic.style.px";
     pic.style.px";
     pic.style.marginLeft=(-(e.clientX-bound.left)/w*flowX)+"px";
     pic.style.marginTop=(-(e.clientY-bound.top)/h*flowY)+"px";
    }
  };
  obox.onmousemove=function(e){
    if(zoom){
     e=e||window.event;
     pic.style.marginLeft=(-(e.clientX-bound.left)/w*flowX)+"px";
     pic.style.marginTop=(-(e.clientY-bound.top)/h*flowY)+"px";
    }
  };
  obox.onmouseout=function(e){
     if(zoom){
      zoom=false;
      pic.style.;
      pic.style.;
      pic.style.marginLeft=pic.style.marginTop="0px";
     }
  };
}
window.onload=function(){
  zoomImg("box");
}; 
</script>
</head>
<body>

鼠标点击图片放大或缩小<br>
<div id="box"><img  src="https://img.111com.net/get_pic/2010/03/20101119115057620.jpg"></div>
</body>
</html>

提示：您可以先修改部分代码再运行

javascript 鼠标点击图片放大或缩小

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