重写微软的alert和confirm
以下代码来自网上
步骤一：创建js文件SysMsgBox.js
// JScript 文件
var alternateFrame=null;//生成的iframe
var alternateWin=null;
window.alert=showAlert;
window.confirm=showConfirm;
/**//**
* 人机交互窗口，覆盖自带的
*/
function alternateWindow(){
this.win=null;//生成对话框的窗口对象
this.pBody=null;//生成的body容器对象
this.pBg=null;
this.type="alert";//默认的种类是alert
this.FocusWhere="OK";//焦点在哪个按钮上
}
/**//**
* 模仿的alert窗口
*/
function showAlert(info){
alternateWin=new alternateWindow();
var pBody = alternateWin.init();
alternateWin.initAlertBody(pBody,info);
alternateWin.type="alert";
}
/**//**
* 模仿的alert窗口
*/
function showConfirm(info,ok_func,notok_func,ok_str,not_okstr){
alternateWin=new alternateWindow();
var pBody = alternateWin.init();
alternateWin.initConfirmBody(pBody,info,ok_func,notok_func,ok_str,not_okstr);
alternateWin.type="confirm";
}
/**//**
* 作用：初始基本信息
*/
alternateWindow.prototype.init=function() {
if(alternateFrame==null){
alternateFrame=document.createElement("<iframe allowTransparency='true' id='popframe' frameborder=0 marginheight=0 src='about:blank' marginwidth=0 hspace=0 vspace=0 scrolling=no></iframe>")
alternateFrame.style.position="absolute";
document.body.appendChild(alternateFrame);
}else{
alternateFrame.style.visibility="visible";
}
alternateFrame.style.width=screen.availWidth;
alternateFrame.style.height=screen.availHeight;
alternateFrame.style.left=document.body.scrollLeft;
alternateFrame.style.top=document.body.scrollTop;
alternateFrame.name=alternateFrame.uniqueID;
this.win=window.frames[alternateFrame.name];
this.win.document.write("<body leftmargin=0 topmargin=0 oncontextmenu='self.event.returnValue=false'><div id=popbg></div><div id=popbody></div><div></div></body>");
this.win.document.body.style.backgroundColor="transparent";
document.body.style.overflow="hidden";
this.pBody=this.win.document.body.children[1];
this.pBg=this.win.document.body.children[0];
this.hideAllSelect();
this.initBg();
return this.pBody;
}
/**//**
* 作用：初始化背景层
*/
alternateWindow.prototype.initBg=function(){
with(this.pBg.style){
position="absolute";
left="0";
top="0";
width="100%";
height="100%";
visibility="hidden";
backgroundColor="#333333";
filter="blendTrans(duration=1) alpha(opacity=30)";
}
this.pBg.filters.blendTrans.apply();
this.pBg.style.visibility="visible";
this.pBg.filters.blendTrans.play();
}
/**//**
* 作用：初始化显示层
*/
alternateWindow.prototype.initAlertBody=function(obj,info){
with(obj.style){
position="absolute";
width="400";
height="150";
backgroundColor="#ffffff";
}
obj.style.left=window.document.body.clientWidth/2-200;
obj.style.top=window.document.body.clientHeight/3;
var str;
str ="<table border=0 cellpadding=0 cellspacing=1 bgcolor=#000000 width=100% height=100%><tr height=30>";
str+="<td align=left style='color:#000000;font-size:14px;font-weight:bold' bgcolor=#9999ff>[提示]</td></tr>";
str+="<tr><td align=center bgcolor=#efefff style='font-size:12px;color:#000000;vertical-align: middle;'>";
str+=info+"</td></tr><tr height=30 bgcolor=#efefef><td align=center>" +
"<input type='button' value='确定' id='OK'" +
" onkeydown='parent.alternateWin.onKeyDown(event,this)'"+
" onclick='parent.alternateWin.closeWin()' style='border:solid 1px #666666;background:#cccccc'>" +
"</td></tr></table>";
obj.innerHTML=str;
this.win.document.body.all.OK.focus();
this.FocusWhere="OK";
}
alternateWindow.prototype.onKeyDown=function(event,obj){
switch(event.keyCode){
case 9:
event.keyCode=-1;
if(this.type=="confirm"){
if(this.FocusWhere=="OK"){
this.win.document.body.all.NO.focus();
this.FocusWhere="NO";
}else{
this.win.document.body.all.OK.focus();
this.FocusWhere="OK";
}
}
break;
case 13:obj.click();;break;
case 27:this.closeWin();break;
}
}
/**//**
* 作用：初始化显示层 conFirm提示层
*/
alternateWindow.prototype.initConfirmBody=function(obj,info,ok_func,notok_func,ok_str,notok_str){
with(obj.style){
position="absolute";
width="400";
height="150";
backgroundColor="#ffffff";
}
if(ok_str==null){
ok_str="确定";
}
if(notok_str==null){
notok_str="取消"
}
obj.style.left=window.document.body.clientWidth/2-200;
obj.style.top=window.document.body.clientHeight/3;
var str;
str="<table border=0 cellpadding=0 cellspacing=1 bgcolor=#000000 width=100% height=100%><tr height=30>";
str+="<td align=left style='color:#000000;font-size:14px;font-weight:bold' bgcolor=#9999ff>[询问]</td></tr>";
str+="<tr><td align=center bgcolor=#efefff style='font-size:12px;color:#000000;vertical-align: middle;'>";
str+=info+"</td></tr><tr height=30 bgcolor=#efefef><td align=center>" +
"<input type='button' id='OK'" +
" onkeydown='parent.alternateWin.onKeyDown(event,this)'"+
" onclick='parent.alternateWin.closeWin();parent."+ok_func+"();' " +
" value='"+ok_str+"' style='border:solid 1px #666666;background:#cccccc'>"+
" <input type='button' value='"+notok_str+"' id='NO'"+
" onkeydown='parent.alternateWin.onKeyDown(event,this)'"+
" onclick='parent.alternateWin.closeWin();" +
" parent."+notok_func+"();' style='border:solid 1px #666666;background:#cccccc'></td></tr></table>";
obj.innerHTML=str;
this.win.document.body.all.OK.focus();
}
/**//**
* 作用：关闭一切
*/
alternateWindow.prototype.closeWin=function(){
alternateFrame.style.visibility="hidden";
this.showAllSelect();
document.body.style.overflow="auto";
}
/**//**
* 作用:隐藏所有的select
*/
alternateWindow.prototype.hideAllSelect=function(){
var obj;
obj=document.getElementsByTagName("SELECT");
var i;
for(i=0;i<obj.length;i++)
obj[i].style.visibility="hidden";
}
/**//**
* 显示所有的select
*/
alternateWindow.prototype.showAllSelect=function(){
var obj;
obj=document.getElementsByTagName("SELECT");
var i;
for(i=0;i<obj.length;i++)
obj[i].style.visibility="visible";
}步骤二：在程序页面上引用该脚本，直接使用alert和confirm函数。
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
<script language="javascript" src="SysMsgBox.js"></script>
<script language="javascript" type="text/javascript">
function f_yes()
{
alert('提交成功');
}
function f_no()
{
return ;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<button onclick="confirm('确认提交？','f_yes','f_no','是','否')">
提示</button>
<button onclick="alert('hello!')">
hello!</button>
</div>
</form>
</body>
</html>
步骤一：创建js文件SysMsgBox.js
// JScript 文件
var alternateFrame=null;//生成的iframe
var alternateWin=null;
window.alert=showAlert;
window.confirm=showConfirm;
/**//**
* 人机交互窗口，覆盖自带的
*/
function alternateWindow(){
this.win=null;//生成对话框的窗口对象
this.pBody=null;//生成的body容器对象
this.pBg=null;
this.type="alert";//默认的种类是alert
this.FocusWhere="OK";//焦点在哪个按钮上
}
/**//**
* 模仿的alert窗口
*/
function showAlert(info){
alternateWin=new alternateWindow();
var pBody = alternateWin.init();
alternateWin.initAlertBody(pBody,info);
alternateWin.type="alert";
}
/**//**
* 模仿的alert窗口
*/
function showConfirm(info,ok_func,notok_func,ok_str,not_okstr){
alternateWin=new alternateWindow();
var pBody = alternateWin.init();
alternateWin.initConfirmBody(pBody,info,ok_func,notok_func,ok_str,not_okstr);
alternateWin.type="confirm";
}
/**//**
* 作用：初始基本信息
*/
alternateWindow.prototype.init=function() {
if(alternateFrame==null){
alternateFrame=document.createElement("<iframe allowTransparency='true' id='popframe' frameborder=0 marginheight=0 src='about:blank' marginwidth=0 hspace=0 vspace=0 scrolling=no></iframe>")
alternateFrame.style.position="absolute";
document.body.appendChild(alternateFrame);
}else{
alternateFrame.style.visibility="visible";
}
alternateFrame.style.width=screen.availWidth;
alternateFrame.style.height=screen.availHeight;
alternateFrame.style.left=document.body.scrollLeft;
alternateFrame.style.top=document.body.scrollTop;
alternateFrame.name=alternateFrame.uniqueID;
this.win=window.frames[alternateFrame.name];
this.win.document.write("<body leftmargin=0 topmargin=0 oncontextmenu='self.event.returnValue=false'><div id=popbg></div><div id=popbody></div><div></div></body>");
this.win.document.body.style.backgroundColor="transparent";
document.body.style.overflow="hidden";
this.pBody=this.win.document.body.children[1];
this.pBg=this.win.document.body.children[0];
this.hideAllSelect();
this.initBg();
return this.pBody;
}
/**//**
* 作用：初始化背景层
*/
alternateWindow.prototype.initBg=function(){
with(this.pBg.style){
position="absolute";
left="0";
top="0";
width="100%";
height="100%";
visibility="hidden";
backgroundColor="#333333";
filter="blendTrans(duration=1) alpha(opacity=30)";
}
this.pBg.filters.blendTrans.apply();
this.pBg.style.visibility="visible";
this.pBg.filters.blendTrans.play();
}
/**//**
* 作用：初始化显示层
*/
alternateWindow.prototype.initAlertBody=function(obj,info){
with(obj.style){
position="absolute";
width="400";
height="150";
backgroundColor="#ffffff";
}
obj.style.left=window.document.body.clientWidth/2-200;
obj.style.top=window.document.body.clientHeight/3;
var str;
str ="<table border=0 cellpadding=0 cellspacing=1 bgcolor=#000000 width=100% height=100%><tr height=30>";
str+="<td align=left style='color:#000000;font-size:14px;font-weight:bold' bgcolor=#9999ff>[提示]</td></tr>";
str+="<tr><td align=center bgcolor=#efefff style='font-size:12px;color:#000000;vertical-align: middle;'>";
str+=info+"</td></tr><tr height=30 bgcolor=#efefef><td align=center>" +
"<input type='button' value='确定' id='OK'" +
" onkeydown='parent.alternateWin.onKeyDown(event,this)'"+
" onclick='parent.alternateWin.closeWin()' style='border:solid 1px #666666;background:#cccccc'>" +
"</td></tr></table>";
obj.innerHTML=str;
this.win.document.body.all.OK.focus();
this.FocusWhere="OK";
}
alternateWindow.prototype.onKeyDown=function(event,obj){
switch(event.keyCode){
case 9:
event.keyCode=-1;
if(this.type=="confirm"){
if(this.FocusWhere=="OK"){
this.win.document.body.all.NO.focus();
this.FocusWhere="NO";
}else{
this.win.document.body.all.OK.focus();
this.FocusWhere="OK";
}
}
break;
case 13:obj.click();;break;
case 27:this.closeWin();break;
}
}
/**//**
* 作用：初始化显示层 conFirm提示层
*/
alternateWindow.prototype.initConfirmBody=function(obj,info,ok_func,notok_func,ok_str,notok_str){
with(obj.style){
position="absolute";
width="400";
height="150";
backgroundColor="#ffffff";
}
if(ok_str==null){
ok_str="确定";
}
if(notok_str==null){
notok_str="取消"
}
obj.style.left=window.document.body.clientWidth/2-200;
obj.style.top=window.document.body.clientHeight/3;
var str;
str="<table border=0 cellpadding=0 cellspacing=1 bgcolor=#000000 width=100% height=100%><tr height=30>";
str+="<td align=left style='color:#000000;font-size:14px;font-weight:bold' bgcolor=#9999ff>[询问]</td></tr>";
str+="<tr><td align=center bgcolor=#efefff style='font-size:12px;color:#000000;vertical-align: middle;'>";
str+=info+"</td></tr><tr height=30 bgcolor=#efefef><td align=center>" +
"<input type='button' id='OK'" +
" onkeydown='parent.alternateWin.onKeyDown(event,this)'"+
" onclick='parent.alternateWin.closeWin();parent."+ok_func+"();' " +
" value='"+ok_str+"' style='border:solid 1px #666666;background:#cccccc'>"+
" <input type='button' value='"+notok_str+"' id='NO'"+
" onkeydown='parent.alternateWin.onKeyDown(event,this)'"+
" onclick='parent.alternateWin.closeWin();" +
" parent."+notok_func+"();' style='border:solid 1px #666666;background:#cccccc'></td></tr></table>";
obj.innerHTML=str;
this.win.document.body.all.OK.focus();
}
/**//**
* 作用：关闭一切
*/
alternateWindow.prototype.closeWin=function(){
alternateFrame.style.visibility="hidden";
this.showAllSelect();
document.body.style.overflow="auto";
}
/**//**
* 作用:隐藏所有的select
*/
alternateWindow.prototype.hideAllSelect=function(){
var obj;
obj=document.getElementsByTagName("SELECT");
var i;
for(i=0;i<obj.length;i++)
obj[i].style.visibility="hidden";
}
/**//**
* 显示所有的select
*/
alternateWindow.prototype.showAllSelect=function(){
var obj;
obj=document.getElementsByTagName("SELECT");
var i;
for(i=0;i<obj.length;i++)
obj[i].style.visibility="visible";
}步骤二：在程序页面上引用该脚本，直接使用alert和confirm函数。
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
<script language="javascript" src="SysMsgBox.js"></script>
<script language="javascript" type="text/javascript">
function f_yes()
{
alert('提交成功');
}
function f_no()
{
return ;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<button onclick="confirm('确认提交？','f_yes','f_no','是','否')">
提示</button>
<button onclick="alert('hello!')">
hello!</button>
</div>
</form>
</body>
</html>