本文實例講述了JS實現簡潔、全兼容的拖動層。分享給大家供大家參考。具體分析如下:
這是一款最簡潔的JS層拖動代碼,全兼容ie、ff、opera、safari……每一種浏覽器都有對應的判斷和實現方法,你只需復制代碼到你的網頁中就可使用。水平高的朋友可以繼續修改,添加更多方法,使其功能更強大。
<!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> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>JS拖動層</title> </head> <body> <div id="f" style="position: absolute; width: 216px; height: 138px; background-color: skyblue;font-size: 12px; top: 210px; left: 180px; z-index: 101; border: solid 1px blue;"> <div id="title" style="background-color: Blue; cursor: move; height: 20px; color: #fff;font-size: 12px; padding-top: 5px; padding-left: 10px;">層的標題</div> 層的內容 </div> <script type="text/javascript"> var posX; var posY; fdiv = document.getElementById("f"); document.getElementById("title").onmousedown=function(e) { if(!e) e = window.event; //IE posX = e.clientX - parseInt(fdiv.style.left); posY = e.clientY - parseInt(fdiv.style.top); document.onmousemove = mousemove; } document.onmouseup = function() { document.onmousemove = null; } function mousemove(ev) { if(ev==null) ev = window.event;//IE fdiv.style.left = (ev.clientX - posX) + "px"; fdiv.style.top = (ev.clientY - posY) + "px"; } </script> </body> </html>
希望本文所述對大家的javascript程序設計有所幫助。