这就是我最终解决它的方式：
我创建了一个新的补丁 javascript 文件并将其包含在 ext 文件之后
/*
@Author: RWR 20130224
This fixes the issue with backward traversal of history in IE8 & higher in standard document mode.
This class was challenging to override (http://www.sencha.com/forum/showthread.php?46306-Help-How-to-extend-Ext.History)
I ended up pasting all of the source original code here and making the necessary changes.
NOTE that this may be patched in version 3.4.1. It is definitely patched in 4.1. When upgrading, validate that this patch is still required.
*/
NewHistory = (function () {
var iframe, hiddenField;
var ready = false;
var currentToken;
var oldIEMode = Ext.isIE6 || Ext.isIE7 || !Ext.isStrict && Ext.isIE8;
function getHash() {
var href = location.href, i = href.indexOf("#"),
hash = i >= 0 ? href.substr(i + 1) : null;
if (Ext.isGecko) {
hash = decodeURIComponent(hash);
}
return hash;
}
function doSave() {
hiddenField.value = currentToken;
}
function handleStateChange(token) {
currentToken = token;
Ext.History.fireEvent('change', token);
}
function updateIFrame (token) {
var html = ['<html><body><div id="state">',Ext.util.Format.htmlEncode(token),'</div></body></html>'].join('');
try {
var doc = iframe.contentWindow.document;
doc.open();
doc.write(html);
doc.close();
return true;
} catch (e) {
return false;
}
}
function checkIFrame() {
if (!iframe.contentWindow || !iframe.contentWindow.document) {
setTimeout(checkIFrame, 10);
return;
}
var doc = iframe.contentWindow.document;
var elem = doc.getElementById("state");
var token = elem ? elem.innerText : null;
var hash = getHash();
setInterval(function () {
doc = iframe.contentWindow.document;
elem = doc.getElementById("state");
var newtoken = elem ? elem.innerText : null;
var newHash = getHash();
if (newtoken !== token) {
token = newtoken;
handleStateChange(token);
location.hash = token;
hash = token;
doSave();
} else if (newHash !== hash) {
hash = newHash;
updateIFrame(newHash);
}
}, 50);
ready = true;
Ext.History.fireEvent('ready', Ext.History);
}
function startUp() {
currentToken = hiddenField.value ? hiddenField.value : getHash();
if (oldIEMode) {
checkIFrame();
} else {
var hash = getHash();
setInterval(function () {
var newHash = getHash();
if (newHash !== hash) {
hash = newHash;
handleStateChange(hash);
doSave();
}
}, 50);
ready = true;
Ext.History.fireEvent('ready', Ext.History);
}
}
return {
/**
* The id of the hidden field required for storing the current history token.
* @type String
* @property s
*/
fieldId: 'x-history-field',
/**
* The id of the iframe required by IE to manage the history stack.
* @type String
* @property s
*/
iframeId: 'x-history-frame',
events:{},
/**
* Initialize the global History instance.
* @param {Boolean} onReady (optional) A callback function that will be called once the history
* component is fully initialized.
* @param {Object} scope (optional) The scope (<code>this</code> reference) in which the callback is executed. Defaults to the browser window.
*/
init: function (onReady, scope) {
if(ready) {
Ext.callback(onReady, scope, [this]);
return;
}
if(!Ext.isReady){
Ext.onReady(function(){
Ext.History.init(onReady, scope);
});
return;
}
hiddenField = Ext.getDom(Ext.History.fieldId);
if (oldIEMode) {
iframe = Ext.getDom(Ext.History.iframeId);
}
this.addEvents(
/**
* @event ready
* Fires when the Ext.History singleton has been initialized and is ready for use.
* @param {Ext.History} The Ext.History singleton.
*/
'ready',
/**
* @event change
* Fires when navigation back or forwards within the local page's history occurs.
* @param {String} token An identifier associated with the page state at that point in its history.
*/
'change'
);
if(onReady){
this.on('ready', onReady, scope, {single:true});
}
startUp();
},
/**
* Add a new token to the history stack. This can be any arbitrary value, although it would
* commonly be the concatenation of a component id and another id marking the specifc history
* state of that component. Example usage:
* <pre><code>
// Handle tab changes on a TabPanel
tabPanel.on('tabchange', function(tabPanel, tab){
Ext.History.add(tabPanel.id + ':' + tab.id);
});
</code></pre>
* @param {String} token The value that defines a particular application-specific history state
* @param {Boolean} preventDuplicates When true, if the passed token matches the current token
* it will not save a new history step. Set to false if the same state can be saved more than once
* at the same history stack location (defaults to true).
*/
add: function (token, preventDup) {
if(preventDup !== false){
if(this.getToken() == token){
return true;
}
}
if (oldIEMode) {
return updateIFrame(token);
} else {
location.hash = token;
return true;
}
},
/**
* Programmatically steps back one step in browser history (equivalent to the user pressing the Back button).
*/
back: function(){
history.go(-1);
},
/**
* Programmatically steps forward one step in browser history (equivalent to the user pressing the Forward button).
*/
forward: function(){
history.go(1);
},
/**
* Retrieves the currently-active history token.
* @return {String} The token
*/
getToken: function() {
return ready ? currentToken : getHash();
}
};
})();
Ext.apply(NewHistory, new Ext.util.Observable());
Ext.apply(Ext.History, NewHistory);