问题
This might seem a weird question, but is there a way to override the window.location without making the browser control navigate to it? The problem I am having is that i am injecting html code in the control, and the window.location is about:blank - causing errors on some javascript code. Trying to make them think they are in a URL other than about:blank
回答1:
I've had success with Object.defineProperty() when document.documentMode >= 9 (IE9+).
To get the WebBrowser control in IE9+ mode, I first load the following URL:
about:<!doctype html><meta http-equiv="X-UA-Compatible" content="IE=edge">
This gives a mostly empty document in the latest document mode.
Then to redefine window.location, I execute some script via eval() or document.write():
Object.defineProperty(window, 'location', {value: {href: 'fubar'}});
The complete sequence is like this:
- Load the control.
- Wait for
WebBrowser.ReadyState == 4or theDocumentCompleteevent. - Call
document.open()(important). - Eval or write the script redefining location.
- Write the HTML content.
- Call
document.close()(ensures onload gets called).
Note: I use the ActiveX WebBrowser control, and not the .NET component which is a wrapper around that control. It will probably work the same in .NET.
回答2:
HTML5 drafts include window.history.pushState+window.onpopstate, but this is not supported by Trident (MSHTML), and doesn't allow for navigating across domains, nevermind URL schemes.
Some JavaScript implementations also support user-defined getters and setters, so you could maybe do window.__defineGetter__('location', function() { return fakeLocation }), but yet again I believe that won't work with IE's control.
Echoing the commenters: what are you doing?
回答3:
It is not possible to replace the window.location property. window.location is a non-configurable property, which means that it cannot be modified.
The only messy workaround that I can use is to do a find and replace (replace the window.location line with an empty string or something) on the script text before executing it.
来源：https://stackoverflow.com/questions/4138582/overriding-window-location-on-webbrowser-control