<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> #pbox{ width: 100%; height:100%; } #box{ width: 200px; height: 200px; background:red; position: absolute; } </style> </head> <body> <input type="button" value="随机生成"> <div> <div> </div> </div> </body> <script> var btn=document.getElementById("btn");//获取按钮 var box=document.getElementById("box");//获取box var pbox=document.getElementById("pbox");//获取pbox var arr=['#fff143','#ff7500','#a3d900','#eedeb0','#ae7000','#b35c44','#392f41','#ff461f','#44cef6','#edd1db','#003371'];//随机颜色 //给btn注册点击事件ain btn.onclick=function(){ pbox.innerHTML="";//清空pbo for(var i=0;i<=10;i++){ var newTip =box.cloneNode(true); pbox.appendChild(newTip); var left=parseInt(Math.random()*(900-100+1) + 100);//随机生成左边距 var top=parseInt(Math.random()*(500-100+1) + 100);//随机生成上边距 var bg=Math.floor((Math.random()*arr.length));//生成数组随机数获得随机数组下标 box.style.background=arr[bg];//设置颜色 box.style.top=top+"px";//设置上边距 box.style.left=left+"px";//设置左边距 } var c=pbox.children; for(var i=0;i< c.length;i++){ c[i].onmousedown=function (e) { // alert(this.offsetLeft); var spacex=e.pageX-this.offsetLeft; var spacey=e.pageY-this.offsetTop; this.onmousemove=function (e) { this.style.left=e.pageX-spacex+"px"; this.style.top=e.pageY-spacey+"px"; } }; c[i].onmouseup=function () { this.onmousemove=null; } } } </script> </html>
JavaScript实现图片拖曳效果
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