美化js系统函数alert，confirm，prompt，并实现lightbox效果

注意：1)alert，confirm及prompt并不同于系统的，这个是用层模仿的，并不能挂起程序的执行

2)所以如果需要在确认后执行相关的操作，需要在配置文件中传递回调函数fn
3)按钮只提供yes和no两个

 

点击查看示例效果

示例代码下载

 

msg.js

var Showbo={author:'showbo',homepage:'http://www.coding123.net'};//是否为ie浏览器Showbo.IsIE=!!document.all;//ie浏览器版本Showbo.IEVersion=(function(){if(!Showbo.IsIE)return -1;try{return parseFloat(/msie ([/d/.]+)/i.exec(navigator.userAgent)[1]);}catch(e){return -1;}})();//按id获取对象Showbo.$=function(Id,isFrame){var o;if("string"==typeof(Id))o= document.getElementById(Id);else if("object"==typeof(Id))o= Id;else return null;return isFrame?(Showbo.IsIE?frames[Id]:o.contentWindow):o;}//按标签名称获取对象//页面的高和宽******************************Showbo.isStrict=document.compatMode == "CSS1Compat";Showbo.BodyScale={x:0,y:0,tx:0,ty:0};//（x，y）：当前的浏览器容器大小 （tx，ty）：总的页面滚动宽度和高度Showbo.getClientHeight=function(){/*if(Showbo.IsIE)*/return Showbo.isStrict ? document.documentElement.clientHeight :document.body.clientHeight;/*else return self.innerHeight;*/}Showbo.getScrollHeight=function(){var h=!Showbo.isStrict?document.body.scrollHeight:document.documentElement.scrollHeight;return Math.max(h,this.getClientHeight());}Showbo.getHeight=function(full){return full?this.getScrollHeight():this.getClientHeight();}Showbo.getClientWidth=function(){/*if(Showbo.IsIE)*/return Showbo.isStrict?document.documentElement.clientWidth:document.body.clientWidth;/*else return self.innerWidth;*/}Showbo.getScrollWidth=function(){var w=!Showbo.isStrict?document.body.scrollWidth:document.documentElement.scrollWidth;return Math.max(w,this.getClientWidth());}Showbo.getWidth=function(full){return full?this.getScrollWidth():this.getClientWidth();}Showbo.initBodyScale=function(){Showbo.BodyScale.x=Showbo.getWidth(false);Showbo.BodyScale.y=Showbo.getHeight(false);Showbo.BodyScale.tx=Showbo.getWidth(true);Showbo.BodyScale.ty=Showbo.getHeight(true);}//页面的高和宽******************************Showbo.Msg={ INFO:'info', ERROR:'error', WARNING:'warning', IsInit:false, timer:null, dvTitle:null, dvCT:null, dvBottom:null, dvBtns:null, lightBox:null, dvMsgBox:null, defaultWidth:300, moveProcessbar:function(){ var o=Showbo.$('dvProcessbar'),w=o.style.width; if(w=='')w=20; else{ w=parseInt(w)+20; if(w>100)w=0; } o.style.width=w+'%'; }, InitMsg:function(width){ //ie下不按照添加事件的循序来执行，所以要注意在调用alert等方法时要检测是否已经初始化IsInit=true var ifStr='<iframe src="javascript:false" mce_src="javascript:false" style="position:absolute; visibility:inherit; top:0px;left:0px;width:100%; height:100%; z-index:-1;' +'filter=/'progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)/';"></iframe>', html='<div class="top"><div class="right"><div class="title" id="dvMsgTitle"></div></div></div>'+ '<div class="body"><div class="right"><div class="ct" id="dvMsgCT"></div></div></div>'+ '<div class="bottom" id="dvMsgBottom"><div class="right"><div class="btn" id="dvMsgBtns"></div></div></div>'; this.dvMsgBox=document.createElement("div"); this.dvMsgBox.id="dvMsgBox"; this.dvMsgBox.innerHTML+=html; document.body.appendChild(this.dvMsgBox); this.lightBox=document.createElement("div"); this.lightBox.id="ShowBolightBox"; document.body.appendChild(this.lightBox); if(Showbo.IsIE&&Showbo.IEVersion<7){//加iframe层修正ie6下无法遮盖住select的问题 this.lightBox.innerHTML+=ifStr; this.dvMsgBox.innerHTML+=ifStr; } this.dvBottom=Showbo.$('dvMsgBottom'); this.dvBtns=Showbo.$('dvMsgBtns'); this.dvCT=Showbo.$('dvMsgCT'); this.dvTitle=Showbo.$('dvMsgTitle'); this.IsInit=true; }, checkDOMLast:function(){//此方法非常关键，要不无法显示弹出窗口。两个对象dvMsgBox和lightBox必须处在body的最后两个节点内 if(document.body.lastChild!=this.lightBox){ document.body.appendChild(this.dvMsgBox); document.body.appendChild(this.lightBox); } }, createBtn:function(p,v,fn){ var btn=document.createElement("input"); btn.type="button"; btn.className='btn'; btn.value=v; btn.onmouseover=function(){this.className='btnfocus';} btn.onmouseout=function(){this.className='btn';} btn.onclick=function(){ Showbo.Msg.hide(); if(fn)fn(p); } return btn; }, alert:function(msg){ this.show({buttons:{yes:'确认'},msg:msg}); }, confirm:function(msg,fn){ //fn为回调函数，参数和show方法的一致 this.show({buttons:{yes:'确认',no:'取消'},msg:msg,title:'提示',fn:fn}); }, prompt:function(labelWord,defaultValue,txtId,fn){ if(!labelWord)labelWord='请输入：'; if(!defaultValue)defaultValue=""; if(!txtId)txtId="msg_txtInput"; this.show({title:'输入提示',msg:labelWord+'<input type="text" id="'+txtId+'" style="width:200px" value="'+defaultValue+'"/>',buttons:{yes:'确认',no:'取消'},fn:fn}); }, wait:function(msg,title){ if(!msg)msg='正在处理..'; this.show({title:title,msg:msg,wait:true}); }, show:function(cfg){ //cfg:{title:'',msg:'',wait:true,icon:'默认为信息',buttons:{yes:'',no:''},fn:function(btn){回调函数,btn为点击的按钮，可以为yes，no},width:显示层的宽} //如果是等待则wait后面的配置不需要了。。 if(!cfg)throw("没有指定配置文件！"); //添加窗体大小改变监听 if(Showbo.IsIE)window.attachEvent("onresize",this.onResize); else window.addEventListener("resize",this.onResize,false); if(!this.IsInit)this.InitMsg();//初始化dom对象 else this.checkDOMLast();//检查是否在最后 //检查是否要指定宽，默认为300 if(cfg.width)this.defaultWidth=cfg.width; this.dvMsgBox.style.width=this.defaultWidth+'px'; //可以直接使用show方法停止为进度条的窗口 if(this.timer){clearInterval(this.timer);this.timer=null;} this.dvTitle.innerHTML=''; if(cfg.title)this.dvTitle.innerHTML=cfg.title; this.dvCT.innerHTML=''; if(cfg.wait){ if(cfg.msg)this.dvCT.innerHTML=cfg.msg; this.dvCT.innerHTML+='<div class="pro"><div class="bg" id="dvProcessbar"></div></div>'; this.dvBtns.innerHTML=''; this.dvBottom.style.height='10px'; this.timer=setInterval(function(){Showbo.Msg.moveProcessbar();},1000); } else{ //if(!cfg.icon)cfg.icon=Showbo.Msg.INFO; if(!cfg.buttons||(!cfg.buttons.yes&&!cfg.buttons.no)){ cfg.buttons={yes:'确定'}; } if(cfg.icon)this.dvCT.innerHTML='<div class="icon '+cfg.icon+'"></div>'; if(cfg.msg)this.dvCT.innerHTML+=cfg.msg+'<div class="clear"></div>'; this.dvBottom.style.height='45px'; this.dvBtns.innerHTML='<div class="height"></div>'; if(cfg.buttons.yes){ this.dvBtns.appendChild(this.createBtn('yes',cfg.buttons.yes,cfg.fn)); if(cfg.buttons.no)this.dvBtns.appendChild(document.createTextNode('　')); } if(cfg.buttons.no)this.dvBtns.appendChild(this.createBtn('no',cfg.buttons.no,cfg.fn)); } Showbo.initBodyScale(); this.dvMsgBox.style.display='block'; this.lightBox.style.display='block'; this.onResize(false); }, hide:function(){ this.dvMsgBox.style.display='none'; this.lightBox.style.display='none'; if(this.timer){clearInterval(this.timer);this.timer=null;} if(Showbo.IsIE)window.detachEvent('onresize',this.onResize); else window.removeEventListener('resize',this.onResize,false); }, onResize:function(isResize){ if(isResize)Showbo.initBodyScale(); Showbo.Msg.lightBox.style.width=Showbo.BodyScale.tx+'px'; Showbo.Msg.lightBox.style.height=Showbo.BodyScale.ty+'px'; Showbo.Msg.dvMsgBox.style.top=document.documentElement.scrollTop+Math.floor((Showbo.BodyScale.y-Showbo.Msg.dvMsgBox.offsetHeight)/2)+'px'; Showbo.Msg.dvMsgBox.style.left=Math.floor((Showbo.BodyScale.x-Showbo.Msg.dvMsgBox.offsetWidth)/2)+'px'; }}

 

msg.css

/*Msg*/#dvMsgBox{display:none;position:absolute;font-size:12px;width:300px;background:transparent url(top-bottom.png) repeat-x;overflow:hidden;z-index:999;}#dvMsgBox .top{height:24px;background:transparent url(left-corners.png) no-repeat;padding-left:6px;}#dvMsgBox .top .right{height:100%;background:transparent url(right-corners.png) no-repeat right top;padding-right:6px;}#dvMsgBox .top .right .title{cursor:move;background:transparent url(top-bottom.png) repeat-x;height:100%;line-height:24px;color:#15428b;vertical-align:middle;font-weight:bold;overflow:hidden;}#dvMsgBox .body{background:transparent url(left-right.png) repeat-y;padding-left:10px;}#dvMsgBox .body .right{background:transparent url(left-right.png) repeat-y right;padding-right:2px;}#dvMsgBox .body .right .ct{background-color:#cddef3 !important;background-color:#cadaec;line-height:20px;vertical-align:middle;width:100%;}#dvMsgBox .body .right .ct .pro{width:280px;border:solid 1px #6593cf;height:25px;background:#ffffff;line-height:23px;overflow:hidden;}#dvMsgBox .body .right .ct .pro .bg{width:0%;height:100%;background:#c9dffc;}#dvMsgBox .bottom{background:transparent url(left-corners.png) no-repeat left bottom;padding-left:6px;}#dvMsgBox .bottom .right{height:100%;background:transparent url(right-corners.png) no-repeat right bottom;padding-right:6px;}#dvMsgBox .bottom .right .btn{height:100%;background:transparent url(top-bottom.png) repeat-x left bottom;text-align:center;}#dvMsgBox .bottom .right .btn input{border:0px;width:70px;height:22px;text-align:center;line-height:22px;vertical-align:middle;cursor:pointer;}#dvMsgBox .bottom .right .btn input.btn{background:url(btn.gif) no-repeat;}#dvMsgBox .bottom .right .btn input.btnfocus{background:url(btnfocus.gif) no-repeat;}#dvMsgBox .icon{width:32px;height:32px;float:left;margin-right:10px;}#dvMsgBox .error{background:url(icon-error.gif) no-repeat;}#dvMsgBox .info{background:url(icon-info.gif) no-repeat;}#dvMsgBox .warning{background:url(icon-warning.gif) no-repeat;}#dvMsgBox .clear{clear:both;}#dvMsgBox .height{height:10px;line-height:10px;}#ShowBolightBox{display:none;-moz-opacity:0.5;filter:alpha(opacity=50);opacity:0.5;background-color:#000000;z-index:100;position:absolute;left:0px;top:0px;}

 

测试页面及说明

<!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=utf-8" /> <title>编程设计网--美化alert，confirm，并实现lightbox效果</title> <meta id="metaKey" name="Keywords" content="美化alert，confirm，并实现lightbox效果" /> <meta id="metaDes" name="Description" content="美化alert，confirm，并实现lightbox效果" /> <link href="images/msg.css" mce_href="images/msg.css" type="text/css" rel="Stylesheet" /> <mce:script type="text/javascript" src="msg.js" mce_src="msg.js"></mce:script> <mce:style type="text/css"><!-- body{font-size:14px;} --></mce:style><style type="text/css" mce_bogus="1"> body{font-size:14px;} </style></head><body><h4>注意alert，confirm及prompt并不同于系统的，这个是用层模仿的，并不能挂起程序的执行<br />所以如果需要在确认后执行相关的操作，需要在配置文件中传递回调函数fn<br />按钮只提供yes和no两个</h4>Showbo.Msg.alert：参数（要显示的信息）<br />如 Showbo.Msg.alert('你好！')<hr />Showbo.Msg.confirm：参数（提示信息<font color="red">，回调函数</font>）<br />如 Showbo.Msg.confirm('确认删除？！',function(btn){alert('你点击的按钮为'+btn);})<hr />Showbo.Msg.prompt：参数（输入框前的文字，输入框默认值，输入框id<font color="red">，回调函数</font>），<br />如 Showbo.Msg.prompt(null,null,function(btn){if(btn=='yes')alert('输入的值为/t/t'+Showbo.$('msg_txtInput').value);});<br />如果未指定“输入框id”， 输入框的id默认为'msg_txtInput"<hr />Showbo.Msg.show：参数（cfg）<br /><b>cfg:{title:'标题'<br />,msg:'信息内容'<br />,wait:true<br />,icon:'提示图标'<br />,buttons:{yes:'yes按钮显示的文字',no:'no按钮显示的文字'}<br />,width:显示的层宽度<br /><font color="red">,fn:function(btn){回调函数，btn为点击的按钮，可以为yes，no}</font>}</b><br />icon的值为Showbo.Msg.ERROR，Showbo.Msg.INFO，Showbo.Msg.WARNING 这个3个<br />上面的3个方法其实调用的还是此方法，show方法可以<hr /><br />上面的<font color="red">回调函数中参数只有一个，那就是点了哪个按钮！<b>[yes或者no]</b></font><br /><br /><br />测试代码<br /><br /><input type="button" value="Showbo.Msg.alert" onclick="Showbo.Msg.alert('你好！')"/><br/><input type="button" value="Showbo.Msg.confirm" onclick="Showbo.Msg.confirm('确认删除？！',function(btn){alert('你点击的按钮为'+btn);})"/><br/><input type="button" value="Showbo.Msg.prompt" onclick="popInput()"/><br/><input type="button" value="Showbo.Msg.wait" onclick="Showbo.Msg.wait('正在更新信息...','请等待')"/><br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>1<br/>21<br/>21<mce:script type="text/javascript"><!--function popInput(){ //输入框的id为msg_txtInput Showbo.Msg.prompt(null,null,null,function(btn){ if(btn=='yes')alert('输入的值为/t/t'+Showbo.$('msg_txtInput').value); });}// --></mce:script><span style="display:none" mce_style="display:none"><mce:script type='text/javascript' src="http://xslt.alexa.com/site_stats/js/t/a?url=http://www.coding123.net" mce_src="http://xslt.alexa.com/site_stats/js/t/a?url=http://www.coding123.net"></mce:script></span></body></html>