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首页 / 脚本样式 / JavaScript / js实现仿网易点击弹出提示同时背景变暗效果

本文实例讲述了js实现仿网易点击弹出提示同时背景变暗效果。分享给大家供大家参考。具体如下:
这里仿网易点击弹出提示,背景变暗提示层效果,圆角,美观简洁,代码稍嫌多。
运行效果如下图所示:

在线演示地址如下:
http://demo.jb51.net/js/2015/js-sina-dialog-bgcolor-codes/
具体代码如下:
<html><head><title>点击弹出提示,背景变暗</title><script>function msg(info){var p=document.createElement("DIV");if (!info) var info="<a href="#" target="_blank" rel="external">欢迎光临</a>";p.id="p";p.style.position="absolute";p.style.width=document.body.scrollWidth;p.style.height=(document.body.offsetHeight>document.body.scrollHeight)?"100%":document.body.scrollHeight;p.style.zIndex="998";p.style.top="0px"; p.style.left="0%";p.style.backgroundColor="gray";p.style.opacity="0.5";p.style.filter="alpha(opacity=80)";document.body.appendChild(p);var p1=document.createElement("DIV");var top=parseInt(parseInt(document.body.scrollHeight)*0.25)+document.body.scrollTop;p1.style.position="absolute";p1.style.width="300px";p1.id="p1";var left=Math.ceil(((document.body.scrollWidth)-parseInt(p1.style.width.replace("px","")))/2)+document.body.scrollLeft;p1.style.height="200px";p1.style.zIndex="999";p1.style.top=top+"px"; p1.style.left=left+"px";p1.style.border="0px solid red";var html=""; html+="<center>" html+="<div class="p3" style="height:1px;overflow:hidden;background:red;width:294px;border-left:1px solid red;border-right:1px solid red;"></div>" html+="<div class="p2" style="height:1px;overflow:hidden;background:red;width:296px;border-left:1px solid red;border-right:1px solid red;"></div>" html+="<div class="p2" style="height:1px;overflow:hidden;background:red;width:298px;border-left:1px solid red;border-right:1px solid red;"></div>" html+="<div class="p1" style="height:20px;overflow:hidden;background:red;width:300px;border-left:1px solid red;border-right:1px solid red;color:#fff;font-size:9pt;font-weight:bold;text-align:left;"> ⊙ 友情提示:</div>"html+="<div id="c" style="height:150px;width:300px;background-color:#FEEACB;overflow:hidden;border-left:1px solid red;border-right:1px solid red;padding-top:40px;font-size:9pt;">"+info+"<br><br><br>[ <a href="javascript:this.cancle()"> 关闭</a> ]</div>" html+="<div class="p1" style="height:1px;overflow:hidden;background:#FEEACB;width:298px;border-left:1px solid red;border-right:1px solid red;"></div>" html+="<div class="p2" style="height:1px;overflow:hidden;background:#FEEACB;width:296px;border-left:1px solid red;border-right:1px solid red;"></div>" html+="<div class="p3" style="height:1px;overflow:hidden;background:red;width:294px;border-left:1px solid red;border-right:1px solid red"></div>" html+="</center>"document.body.appendChild(p1);p1.innerHTML=html;var arr=document.getElementsByTagName("select");var i=0;while(i<arr.length){ arr[i].style.visibility="hidden"; i++;}this.cancle=function(){document.body.removeChild(document.getElementById("p"));document.body.removeChild(document.getElementById("p1"));var arr=document.getElementsByTagName("select"); var i=0; while(i<arr.length){ arr[i].style.visibility="visible"; i++; }}}</script></head><body><input value="点击弹出提示" type="button" onClick="msg()" /></body></html>
希望本文所述对大家的javascript程序设计有所帮助。