js网页右下角提示框实例

<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>

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) {

        /*

        这里可以设置自动几秒后关闭

        ...

        */

        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); };