JS non-Alert implements the 'unread information' effect pop-up window in the lower right corner of the web page

JS non-Alert implements the 'unread information' effect pop-up window in the lower right corner of the web page_javascript skills

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Release： 2016-05-16 15:38:07

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The example in this article describes the JS non-Alert implementation of the "Unread Information" effect pop-up window in the lower right corner of the web page. Share it with everyone for your reference. The details are as follows:

This is a pop-up window code in the lower right corner of the web page. It is jointly created using Div Js technology. It is not an Alert function. It imitates the pop-up window code in the lower right corner of the web page of Tencent News. The source code author wants to make it easy for novices to understand and learn. A good example, rich comments are added to the code, which provides great convenience for novices to learn and use.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-f-alert-right-buttom-dlg-demo/

The specific code is as follows:

<!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=gb2312" />
<title>右下角的弹窗</title>
</head>
<style type="text/css">
body { background:#333333;}
#winpop { width: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 { width:100%; height:20px; line-height:20px; background:#FFCC00; font-weight:bold; text-align:center; font-size:12px;}
#winpop .con { width: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';//我不知道为什么要初始化这个高度,CSS里不是已经初始化了吗,知道的告诉我一下
setTimeout("tips_pop()",800);//3秒后调用tips_pop()这个函数
}
</script>
<body>
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<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>

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I hope this article will be helpful to everyone’s JavaScript programming.