本文实例讲述了JS实现鼠标框选效果的方法。分享给大家供大家参考,具体如下:
<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\"> <html> <head> <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"> <title>鼠标框选效果</title> <style> *{ padding:0; margin:0; } #bottom{ position:absolute; bottom:0px; width:100%; height:40px; border:1px solid #000; background:#000; color:#fff; } .tempDiv{ border:1px dashed blue; background:#5a72f8; position:absolute; width:0; height:0; filter:alpha(opacity:10); opacity:0.1 } </style> <script type = \"text/javascript\"> window.onload = function(){ var stateBar = document.getElementById(\"bottom\"); document.onmousedown = function(e){ var posx = e.clientX; var posy = e.clientY; var div = document.createElement(\"div\"); div.className = \"tempDiv\"; div.style.left = e.clientX+\"px\"; div.style.top = e.clientY+\"px\"; document.body.appendChild(div); document.onmousemove = function(ev){ div.style.left = Math.min(ev.clientX, posx) + \"px\"; div.style.top = Math.min(ev.clientY, posy) + \"px\"; div.style.width = Math.abs(posx - ev.clientX)+\"px\"; div.style.height = Math.abs(posy - ev.clientY)+\"px\"; stateBar.innerHTML = \"MouseX: \" + ev.clientX + \"<br/>MouseY: \" + ev.clientY; document.onmouseup = function(){ div.parentNode.removeChild(div); document.onmousemove = null; document.onmouseup = null; } } } } </script> </head> <body> <div id = \"bottom\"></div> </body> </html>
更多关于JavaScript相关内容感兴趣的读者可查看本站专题:《JavaScript切换特效与技巧总结》、《JavaScript查找算法技巧总结》、《JavaScript动画特效与技巧汇总》、《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》及《JavaScript数学运算用法总结》
希望本文所述对大家JavaScript程序设计有所帮助。
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