类似msn的提示效果代码系列一：简单的脚本提示

本文介绍了一种在用户登录时显示酷炫提示消息的方法。通过JavaScript实现了一个浮动且随窗口大小调整位置的提示框，该提示框可以显示简单的短消息通知。

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这些天做的一个项目，要求根据业务的逻辑，在某些特定的用户登录系统时，给出一个特定的消息提示，于是想到在有的网站看到的类似msn的提示效果，觉得挺酷的，于是决定也采用这种提示效果。

在网上找到很多有关实现类似效果的文章和代码，我也选了其中的一篇。虽然没有完全能实现我的需求，但是对于简单的内容不变化的提示，还是有比较好的效果，给了我一定的启发，使我最终实现了需求。现将代码贴在这里：

< html >

< head >

< script language = " javascript " >

window.onload = getMsg;

window.onresize = resizeDiv;

window.onerror = function () {}

var divTop,divLeft,divWidth,divHeight,docHeight,docWidth,objTimer,i = 0 ;

function getMsg()

{

try{

divTop = parseInt(document.getElementById("eMeng").style.top,10)

divLeft = parseInt(document.getElementById("eMeng").style.left,10)

divHeight = parseInt(document.getElementById("eMeng").offsetHeight,10)

divWidth = parseInt(document.getElementById("eMeng").offsetWidth,10)

docWidth = document.body.clientWidth;

docHeight = document.body.clientHeight;

document.getElementById("eMeng").style.top = parseInt(document.body.scrollTop,10) + docHeight + 10;// divHeight

document.getElementById("eMeng").style.left = parseInt(document.body.scrollLeft,10) + docWidth - divWidth

document.getElementById("eMeng").style.visibility="visible"

objTimer = window.setInterval("moveDiv()",10)

}

catch(e){}

}

function resizeDiv()

{

i+=1

if(i>500) closeDiv()

try{

divHeight = parseInt(document.getElementById("eMeng").offsetHeight,10)

divWidth = parseInt(document.getElementById("eMeng").offsetWidth,10)

docWidth = document.body.clientWidth;

docHeight = document.body.clientHeight;

document.getElementById("eMeng").style.top = docHeight - divHeight + parseInt(document.body.scrollTop,10)

document.getElementById("eMeng").style.left = docWidth - divWidth + parseInt(document.body.scrollLeft,10)

}

catch(e){}

}

function moveDiv()

{

try

{

if(parseInt(document.getElementById("eMeng").style.top,10) <= (docHeight - divHeight + parseInt(document.body.scrollTop,10)))

{

window.clearInterval(objTimer)

objTimer = window.setInterval("resizeDiv()",1)

}

divTop = parseInt(document.getElementById("eMeng").style.top,10)

document.getElementById("eMeng").style.top = divTop - 1

}

catch(e){}

}

function closeDiv()

{

document.getElementById('eMeng').style.visibility='hidden';

if(objTimer) window.clearInterval(objTimer)

}

</ script >

</ head >

< body >

< DIV id = eMeng style = " BORDER-RIGHT: #455690 1px solid; BORDER-TOP: #a6b4cf 1px solid; Z-INDEX:99999; LEFT: 0px; VISIBILITY: hidden; BORDER-LEFT: #a6b4cf 1px solid; WIDTH: 180px; BORDER-BOTTOM: #455690 1px solid; POSITION: absolute; TOP: 0px; HEIGHT: 116px; BACKGROUND-COLOR: #c9d3f3 " >

< TABLE style = " BORDER-TOP: #ffffff 1px solid; BORDER-LEFT: #ffffff 1px solid " cellSpacing = 0 cellPadding = 0 width = " 100% " bgColor = #cfdef4 border = 0 >

< TBODY >

< TR >

< TD style = " FONT-SIZE: 12px; BACKGROUND-IMAGE: url(msgTopBg.gif); COLOR: #0f2c8c " width = 30 height = 24 ></ TD >

< TD style = " FONT-WEIGHT: normal; FONT-SIZE: 12px; BACKGROUND-IMAGE: url(msgTopBg.gif); COLOR: #1f336b; PADDING-TOP: 4px;PADDING-left: 4px " vAlign = center width = " 100% " > 短消息提示： </ TD >

< TD style = " BACKGROUND-IMAGE: url(msgTopBg.gif); PADDING-TOP: 2px;PADDING-right:2px " vAlign = center align = right width = 19 >< span title = 关闭 style = " CURSOR: hand;color:red;font-size:12px;font-weight:bold;margin-right:4px; " onclick = closeDiv() > × </ span >

</ TR >

< TR >

< TD style = " PADDING-RIGHT: 1px; BACKGROUND-IMAGE: url(1msgBottomBg.jpg); PADDING-BOTTOM: 1px " colSpan = 3 height = 90 >

< DIV style = " BORDER-RIGHT: #b9c9ef 1px solid; PADDING-RIGHT: 13px; BORDER-TOP: #728eb8 1px solid; PADDING-LEFT: 13px; FONT-SIZE: 12px; PADDING-BOTTOM: 13px; BORDER-LEFT: #728eb8 1px solid; WIDTH: 100%; COLOR: #1f336b; PADDING-TOP: 18px; BORDER-BOTTOM: #b9c9ef 1px solid; HEIGHT: 100% " > 您有 < font color = #FF0000 > 1 </ font > 封新短消息 < BR >< BR >