标签:style blog http io ar color os sp on
<!doctype html> <html> <head> <meta charset="utf-8"> <title>无标题文档</title> <script src="http://457375608.github.io/liujin/scripts/jquery-1.8.3.min.js"></script> <style> #div{width:300px;height:300px;background:#f00;position:absolute} </style> <script> /* *鼠标按下 * *鼠标拖动 * *鼠标抬起 * */ /*window.onload=function(){ var oDiv=document.getElementById("div"); oDiv.onmousedown=function(event){ var disX=event.clientX-oDiv.offsetLeft; var disY=event.clientY-oDiv.offsetTop; document.onmousemove=function(event){ var l=event.clientX-disX; var t=event.clientY-disY; if(l<0){ l=0 }else if(l>document.documentElement.clientWidth-oDiv.offsetWidth){ l=document.documentElement.clientWidth-oDiv.offsetWidth }; if(t<0){ t=0 }else if(t>document.documentElement.clientHeight-oDiv.offsetHeight){ t=document.documentElement.clientHeight-oDiv.offsetHeight } oDiv.style.left=l+"px"; oDiv.style.top=t+"px"; }; document.onmouseup=function(){ document.onmousemove=null; document.onmouseup=null; }; return false; } }*/ $(function(){ var oDiv=$("#div"); oDiv.mousedown(function(event){ var offset=oDiv.offset(); var disX=event.clientX-offset.left; var disY=event.clientY-offset.top; $(document).on("mousemove",function(event){ var l=event.clientX-disX; var t=event.clientY-disY; if(l<0){ l=0 }else if(l>$(window).width()-oDiv.width()){ l=$(window).width()-oDiv.width() }; if(t<0){ t=0 }else if(t>$(window).height()-oDiv.height()){ t=$(window).height()-oDiv.height() } //oDiv.css({left:l,top:t}) oDiv.offset({left:l,top:t}) }); $(document).mouseup(function(){ $(document).off("mousemove mouseup") }); return false; }) }) </script> </head> <body> <div id="div"></div> </body> </html>
标签:style blog http io ar color os sp on
原文地址:http://www.cnblogs.com/liujin0505/p/4116066.html