<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" <head> <meta http-equiv= "Content-Type" content= "text/html; charset=gb2312" /> <title>右下角的弹窗</title> </head> <style type= "text/css" > body { background: #333333;} #winpop { 200px; height:0px; position:absolute; right:0; bottom:0; border:1px solid #999999; margin:0; padding:1px; overflow:hidden; display:none; background:#FFFFFF} #winpop .title { 100%; height:20px; line-height:20px; background:#FFCC00; font-weight:bold; text-align:center; font-size:12px;} #winpop .con { 100%; height:80px; line-height:80px; font-weight:bold; font-size:12px; color:#FF0000; text-decoration:underline; text-align:center} #silu { font-size:13px; color:#999999; position:absolute; right:0; text-align:right; text-decoration:underline; line-height:22px;} .close { position:absolute; right:4px; top:-1px; color: #FFFFFF; cursor:pointer} </style> <script type= "text/javascript" > function tips_pop(){ var MsgPop=document.getElementById( "winpop" ); //获取窗口这个对象,即ID为winpop的对象 var popH=parseInt(MsgPop.style.height); //用parseInt将对象的高度转化为数字,以方便下面比较 if (popH==0){ //如果窗口的高度是0 MsgPop.style.display= "block" ; //那么将隐藏的窗口显示出来 show=setInterval( "changeH('up')" ,2); //开始以每0.002秒调用函数changeH("up"),即每0.002秒向上移动一次 } else { //否则 hide=setInterval( "changeH('down')" ,2); //开始以每0.002秒调用函数changeH("down"),即每0.002秒向下移动一次 } } function changeH(str) { var MsgPop=document.getElementById( "winpop" ); var popH=parseInt(MsgPop.style.height); if (str== "up" ){ //如果这个参数是UP if (popH<=100){ //如果转化为数值的高度小于等于100 MsgPop.style.height=(popH+4).toString()+ "px" ; //高度增加4个象素 } else { clearInterval(show); //否则就取消这个函数调用,意思就是如果高度超过100象度了,就不再增长了 } } if (str== "down" ){ if (popH>=4){ //如果这个参数是down MsgPop.style.height=(popH-4).toString()+ "px" ; //那么窗口的高度减少4个象素 } else { //否则 clearInterval(hide); //否则就取消这个函数调用,意思就是如果高度小于4个象度的时候,就不再减了 MsgPop.style.display= "none" ; //因为窗口有边框,所以还是可以看见1~2象素没缩进去,这时候就把DIV隐藏掉 } } } window.onload= function (){ //加载 document.getElementById( 'winpop' ).style.height= '0px' ;
setTimeout( "tips_pop()" ,800); //3秒后调用tips_pop()这个函数 } </script> <body> <div id= "silu" > <button onclick= "tips_pop()" >测试按钮</button> </div> <div id= "winpop" > <div class= "title" >您有新的消息<span class= "close" onclick= "tips_pop()" >X</span></div> <div class= "con" >未读信息(1)</div> </div> </body> </html> |
JS实现网页右下角“未读信息”效果弹窗
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