仿Alert的JavaScript效果
有时页面需要提示的，如果直接用JS的alert来提示会和页面风格不一致，而且比较重要的是会有
很不爽的WINDOWS的提示音。
所以我们可以用JS来仿这个提示，改变成为自己的效果：
在要使用这个页面的地方导入一个alert.js文件，
在要调用这个效果的页面加入如下JS
<script src="script/alert.js" type="text/javascript"></script>
<script type="text/javascript" defer>
<!--
new dialog().init();
//-->
</script>
其中的init是需要在页面载入的时候就去初始化的，而且这个初始化的动作，由于调用了
document.createElement('span');
document.body.appendChild(oDiv);
所以必须要在<body></body>标签里面的内容都装载完毕的时候再调用才行，不然IE就会报错
“Internet Explorer无法打开Internet站点。。。。。”
“已终止操作”
所以一定要在这个JS的后面加上defer，也就是JS在页面全加载后才加载执行
要提示的地方把
alert("test");替换成为---》
new dialog().event("test");
alert.js的内容：
function setCopy(_sTxt){try{clipboardData.setData('Text',_sTxt)}catch(e){}}
function dialog(){
var titile = '';
var width = 300;
var height = 100;
var src = "";
var path = "";
var sFunc = '<input id="dialogOk" type="button" style="width:62px;height:22px;border:0;line-height:20px;" value="确认" onclick="new dialog().reset();" /> <input id="dialogCancel" type="button" style="width:62px;height:22px;border:0;line-height:20px;" value="取消" onclick="new dialog().reset();" />';
var sClose = '<input type="image" id="dialogBoxClose" onclick="new dialog().reset();" src="../images/help/dialogClose.gif" border="0" width="17" height="17" onmouseover="this.src=\'../images/help/dialogClose.gif\';" onmouseout="this.src=\'../images/help/dialogClose.gif\';" align="absmiddle" />';
var sBody = '\
<table id="dialogBodyBox" border="0" align="center" cellpadding="0" cellspacing="0">\
<tr height="10"><td colspan="4"></td></tr>\
<tr>\
<td width="10"></td>\
<td id="dialogMsg" style="font-size:12px;color:#000;"></td>\
<td width="10"></td>\
</tr>\
<tr height="10"><td colspan="4" align="center"></td></tr>\
<tr><td id="dialogFunc" colspan="4" align="center">' + sFunc + '</td></tr>\
<tr height="10"><td colspan="4" align="center"></td></tr>\
</table>\
';
var sBox = '\
<table id="dialogBox" width="' + width + '" border="0" cellpadding="0" cellspacing="0" style="border:1px solid #000;display:none;z-index:10;">\
<tr height="1" bgcolor="#D6E3EB"><td></td></tr>\
<tr height="25" bgcolor="#6795B4">\
<td>\
<table onselectstart="return false;" style="-moz-user-select:none;" width="100%" border="0" cellpadding="0" cellspacing="0">\
<tr>\
<td width="6"></td>\
<td id="dialogBoxTitle" onmousedown="new dialog().moveStart(event, \'dialogBox\')" style="color:#fff;cursor:move;font-size:12px;font-weight:bold;"> </td>\
<td id="dialogClose" width="27" align="right" valign="middle">\
' + sClose + '\
</td>\
<td width="6"></td>\
</tr>\
</table>\
</td>\
</tr>\
<tr height="2" bgcolor="#EDEDED"><td></td></tr>\
<tr id="dialogHeight" style="height:' + height + '">\
<td id="dialogBody" style="background:#fff;color:#000;">' + sBody + '</td>\
</tr>\
</table>\
<div id="dialogBoxShadow" style="display:none;z-index:9;"></div>\
';
function $(_sId){return document.getElementById(_sId)}
this.show = function(){$('dialogBodyBox') ? function(){} : this.init();this.middle('dialogBox');this.shadow();}
this.reset = function(){this.hideModule('select', '');$('dialogBox').style.display='none';$('dialogBoxShadow').style.display = "none";$('dialogBody').innerHTML = sBody;}
this.html = function(_sHtml){$("dialogBody").innerHTML = _sHtml;this.show();}
this.init = function(){
$('dialogCase') ? $('dialogCase').parentNode.removeChild($('dialogCase')) : function(){};
var oDiv = document.createElement('span');
oDiv.id = "dialogCase";
oDiv.innerHTML = sBox;
document.body.appendChild(oDiv);
}
this.button = function(_sId, _sFuc){
if($(_sId)){
$(_sId).style.display = '';
if($(_sId).addEventListener){
if($(_sId).act){$(_sId).removeEventListener('click', function(){eval($(_sId).act)}, false);}
$(_sId).act = _sFuc;
$(_sId).addEventListener('click', function(){eval(_sFuc)}, false);
}else{
if($(_sId).act){$(_sId).detachEvent('onclick', function(){eval($(_sId).act)});}
$(_sId).act = _sFuc;
$(_sId).attachEvent('onclick', function(){eval(_sFuc)});
}
}
}
this.shadow = function(){
var oShadow = $('dialogBoxShadow');
var oDialog = $('dialogBox');
oShadow['style']['position'] = "absolute";
oShadow['style']['background'] = "#000";
oShadow['style']['display'] = "";
oShadow['style']['opacity'] = "0.2";
oShadow['style']['filter'] = "alpha(opacity=0)"; //修改了滤镜的值为0
oShadow['style']['top'] = oDialog.offsetTop + 6;
oShadow['style']['left'] = oDialog.offsetLeft + 6;
oShadow['style']['width'] = oDialog.offsetWidth;
oShadow['style']['height'] = oDialog.offsetHeight;
}
this.open = function(_sUrl, _sMode){
this.show();
if(!_sMode || _sMode == "no" || _sMode == "yes"){
$("dialogBody").innerHTML = "<iframe id='dialogFrame' width='100%' height='100%' frameborder='0' scrolling='" + _sMode + "'></iframe>";
$("dialogFrame").src = _sUrl;
}
}
this.showWindow = function(_sUrl, _iWidth, _iHeight, _sMode){
var oWindow;
var sLeft = (screen.width) ? (screen.width - _iWidth)/2 : 0;
var sTop = (screen.height) ? (screen.height - _iHeight)/2 : 0;
if(window.showModalDialog && _sMode == "m"){
oWindow = window.showModalDialog(_sUrl,"","dialogWidth:" + _iWidth + "px;dialogheight:" + _iHeight + "px");
} else {
oWindow = window.open(_sUrl, '', 'height=' + _iHeight + ', width=' + _iWidth + ', top=' + sTop + ', left=' + sLeft + ', toolbar=no, menubar=no, scrollbars=' + _sMode + ', resizable=no,location=no, status=no');
}
}
this.event = function(_sMsg, _sOk, _sCancel, _sClose){
$('dialogFunc').innerHTML = sFunc;
$('dialogClose').innerHTML = sClose;
$('dialogBodyBox') == null ? $('dialogBody').innerHTML = sBody : function(){};
$('dialogMsg') ? $('dialogMsg').innerHTML = _sMsg : function(){};
this.show();
//_sOk ? this.button('dialogOk', _sOk) | $('dialogOk').focus() : $('dialogOk').style.display = 'none';
_sCancel ? this.button('dialogCancel', _sCancel) : $('dialogCancel').style.display = 'none';
//_sClose ? this.button('dialogBoxClose', _sClose) : function(){};
}
this.set = function(_oAttr, _sVal){
var oShadow = $('dialogBoxShadow');
var oDialog = $('dialogBox');
var oHeight = $('dialogHeight');
if(_sVal != ''){
switch(_oAttr){
case 'title':
$('dialogBoxTitle').innerHTML = _sVal;
title = _sVal;
break;
case 'width':
oDialog['style']['width'] = _sVal;
width = _sVal;
break;
case 'height':
oHeight['style']['height'] = _sVal;
height = _sVal;
break;
case 'src':
if(parseInt(_sVal) > 0){
$('dialogBoxFace') ? $('dialogBoxFace').src = path + _sVal + '.gif' : function(){};
}else{
$('dialogBoxFace') ? $('dialogBoxFace').src = _sVal : function(){};
}
src = _sVal;
break;
}
}
this.middle('dialogBox');
oShadow['style']['top'] = oDialog.offsetTop + 6;
oShadow['style']['left'] = oDialog.offsetLeft + 6;
oShadow['style']['width'] = oDialog.offsetWidth;
oShadow['style']['height'] = oDialog.offsetHeight;
}
this.moveStart = function (event, _sId){
var oObj = $(_sId);
oObj.onmousemove = mousemove;
oObj.onmouseup = mouseup;
oObj.setCapture ? oObj.setCapture() : function(){};
oEvent = window.event ? window.event : event;
var dragData = {x : oEvent.clientX, y : oEvent.clientY};
var backData = {x : parseInt(oObj.style.top), y : parseInt(oObj.style.left)};
function mousemove(){
var oEvent = window.event ? window.event : event;
var iLeft = oEvent.clientX - dragData["x"] + parseInt(oObj.style.left);
var iTop = oEvent.clientY - dragData["y"] + parseInt(oObj.style.top);
oObj.style.left = iLeft;
oObj.style.top = iTop;
$('dialogBoxShadow').style.left = iLeft + 6;
$('dialogBoxShadow').style.top = iTop + 6;
dragData = {x: oEvent.clientX, y: oEvent.clientY};
}
function mouseup(){
var oEvent = window.event ? window.event : event;
oObj.onmousemove = null;
oObj.onmouseup = null;
if(oEvent.clientX < 1 || oEvent.clientY < 1 || oEvent.clientX > document.body.clientWidth || oEvent.clientY > document.body.clientHeight){
oObj.style.left = backData.y;
oObj.style.top = backData.x;
$('dialogBoxShadow').style.left = backData.y + 6;
$('dialogBoxShadow').style.top = backData.x + 6;
}
oObj.releaseCapture ? oObj.releaseCapture() : function(){};
}
}
this.hideModule = function(_sType, _sDisplay){
var aIframe = parent.document.getElementsByTagName("iframe");aIframe=0;
var aType = document.getElementsByTagName(_sType);
var iChildObj, iChildLen;
for (var i = 0; i < aType.length; i++){
aType[i].style.display = _sDisplay;
}
for (var j = 0; j < aIframe.length; j++){
iChildObj = document.frames ? document.frames[j] : aIframe[j].contentWindow;
iChildLen = iChildObj.document.body.getElementsByTagName(_sType).length;
for (var k = 0; k < iChildLen; k++){
iChildObj.document.body.getElementsByTagName(_sType)[k].style.display = _sDisplay;
}
}
}
this.middle = function(_sId){
document.getElementById(_sId)['style']['display'] = '';
document.getElementById(_sId)['style']['position'] = "absolute";
document.getElementById(_sId)['style']['left'] = (document.body.clientWidth / 2) - (document.getElementById(_sId).offsetWidth / 2);
document.getElementById(_sId)['style']['top'] = (document.body.clientHeight / 2 + document.body.scrollTop) - (document.getElementById(_sId).offsetHeight / 2);
}
}