本文实例讲述了js网页右下角提示框的实现方法，分享给大家供大家参考。具体方法如下：

html代码部分如下：

复制代码 代码如下:<style type="text/css">
.messageTip{border-right: #455690 1px solid; border-top: #a6b4cf 1px solid; border-left: #a6b4cf 1px solid; border-bottom: #455690 1px solid; z-index:99999; left: 0px; top: 0px; visibility:hidden; width: 230px; position: absolute; background:#cfdef4; text-align:left}
.messageTip .close{position:absolute; right:0px; font-weight:bold; padding:4px 4px 0 0;}
.messageTip .close a{color:red;font-size:12px; text-decoration:none;}
.messageTip .content{border-top: #ffffff 1px solid; border-left: #ffffff 1px solid}
.messageTip .content .title{color: #1f336b; padding-top: 4px;padding-left: 4px; height:22px;}
.messageTip .content .msg{border-right: #b9c9ef 1px solid;border-left: #728eb8 1px solid; border-top: #728eb8 1px solid; padding:10px; margin:1px}
</style>

<script type="text/javascript" src="/js/base.js"></script>
<div id="eMeng" class="messageTip">
<div class="close"><a href="javascript:msgTip.close();" title="关闭">×</a></div>
<div class="content">
<div class="title">系统提示：</div>
<div class="msg">
内容
</div>
</div>
</div>

js代码部分如下：

复制代码 代码如下:function messageTip(pJso) {
_.init(this, pJso, {
name: 'msg'//提示框标签ID
});
this.eMsg = document.getElementById(this.name);
}

messageTip.prototype =
{
//提示框始终在最右下角
rePosition: function(_this) {
var divHeight = parseInt(_this.eMsg.offsetHeight, 10);
var divWidth = parseInt(_this.eMsg.offsetWidth, 10);
var docWidth = document.body.clientWidth;
var docHeight = document.body.clientHeight;
_this.eMsg.style.top = docHeight - divHeight + parseInt(document.body.scrollTop, 10);
_this.eMsg.style.left = docWidth - divWidth + parseInt(document.body.scrollLeft, 10);
},

//提示框慢慢往上升
moveDiv: function(_this) {

try {
if (parseInt(_this.eMsg.style.top, 10) <= (_this.docHeight - _this.divHeight + parseInt(document.body.scrollTop, 10))) {
window.clearInterval(_this.objTimer);
_this.objTimer = window.setInterval(function() { _this.rePosition(_this); }, 1);
}
_this.divTop = parseInt(_this.eMsg.style.top, 10);
_this.eMsg.style.top = _this.divTop - 1;
}
catch (e) {
}
},

//关闭提示框
close: function() {
this.eMsg.style.visibility = 'hidden';
if (this.objTimer) window.clearInterval(this.objTimer);
},

//显示提示框
show: function() {
var divTop = parseInt(this.eMsg.style.top, 10);
this.divTop = divTop;
var divLeft = parseInt(this.eMsg.style.left, 10);

var divHeight = parseInt(this.eMsg.offsetHeight, 10);
this.divHeight = divHeight;

var divWidth = parseInt(this.eMsg.offsetWidth, 10);
var docWidth = document.body.clientWidth;
var docHeight = document.body.clientHeight;
this.docHeight = docHeight;

this.eMsg.style.top = parseInt(document.body.scrollTop, 10) + docHeight + 10;
this.eMsg.style.left = parseInt(document.body.scrollLeft, 10) + docWidth - divWidth;
this.eMsg.style.visibility = "visible";

var _this = this;
this.objTimer = window.setInterval(function() { _this.moveDiv(_this); }, 10);
}
}

var msgTip = new messageTip({ name: 'eMeng' });
window.onload = function() { msgTip.show(); };
window.onresize = function() { msgTip.rePosition(msgTip); };

希望本文所述对大家的web程序设计有所帮助。