Discuz7.2 IE9兼容性写法 杜工完全修补方案

现象：
1. IE9快速发帖不跳转
2. IE9管理员处理帖子失败
3. IE9登录不跳转，需要手动刷新

原因：

1. AJAXPOST函数判断out了
2. 动态创建iframe时各浏览器处理方式不同

解决方法：

1. 修改templates/header.htm
把
meta http-equiv=x-ua-compatible content=ie=7 /
替换为

复制代码代码如下:
![if lte IE 8]
meta http-equiv=x-ua-compatible content=ie=7 /
![endif]
![if IE 9]
meta http-equiv=x-ua-compatible content=ie=9 /
![endif]


2.修改include/js/common.js

把ajaxpost函数替换为：


复制代码代码如下:
function ajaxpost(formid, showid, waitid, showidclass, submitbtn, recall) {
var waitid = typeof waitid == ’undefined’ || waitid === null ? showid : (waitid !== ’’ ? waitid : ’’);
var showidclass = !showidclass ? ’’ : showidclass;
var ajaxframeid = ’ajaxframe’;
var ajaxframe = $(ajaxframeid);
var formtarget = $(formid).target;
var handleResult = function() {
var s = ’’;
var evaled = false;
showloading(’none’);
try {
s = $(ajaxframeid).contentWindow.document.XMLDocument.text;
} catch(e) {
try {
s = $(ajaxframeid).contentWindow.document.documentElement.firstChild.wholeText;
} catch(e) {
try {
s = $(ajaxframeid).contentWindow.document.documentElement.firstChild.nodeValue;
} catch(e) {
s = ’内部错误，无法显示此内容’;
}
}
}
if(s != ’’ s.indexOf(’ajaxerror’) != -1) {
evalscript(s);
evaled = true;
}
if(showidclass) {
$(showid).className = showidclass;
if(submitbtn) {
submitbtn.disabled = false;
}
}
if(!evaled (typeof ajaxerror == ’undefined’ || !ajaxerror)) {
ajaxinnerhtml($(showid), s);
}
ajaxerror = null;
if($(formid)) $(formid).target = formtarget;
if(typeof recall == ’function’) {
recall();
} else {
eval(recall);
}
if(!evaled) evalscript(s);
ajaxframe.loading = 0;
$(’append_parent’).removeChild(ajaxframe);
};
if(!ajaxframe) {
try{
ajaxframe = document.createElement(’iframe name="’ + ajaxframeid + ’" id="’ + ajaxframeid + ’"/iframe’);
}catch(e){
ajaxframe = document.createElement(’iframe’);
ajaxframe.name = ajaxframeid;
ajaxframe.id = ajaxframeid;
}
ajaxframe.style.display = ’none’;
ajaxframe.loading = 1;
$(’append_parent’).appendChild(ajaxframe);
} else if(ajaxframe.loading) {
return false;
}
_attachEvent(ajaxframe, ’load’, handleResult);
showloading();
$(formid).target = ajaxframeid;
$(formid).action += ’inajax=1’;
$(formid).submit();
return false;
}


后台刷新缓存，搞定。