我可以做一个AJAX调用时prevent window.onbeforeunload被称为 [英] Can I prevent window.onbeforeunload from being called when doing an AJAX call
问题描述
我有一个基于AJAX的网格控件。
I have an AJAX-based grid control.
我们钩到window.onbeforeunload事件来检查他们是否有未保存的数据，如果是这样一条消息，present他们你确定要离开...你有未保存的数据...。
We hook into the window.onbeforeunload event to check if they have unsaved data and if so present them with a message "Are you sure you want to navigate away...you have unsaved data...".
这一切都还是不错的。
但AJAX调用也触发window.onbeforeunload所以如果网格具有未保存的数据和我们进行AJAX调用（如删除另一个网格中的行），用户得到了你确定你要离开。 ..你有未保存的数据...消息，这是不好的。
But AJAX calls also trigger window.onbeforeunload and so if the grid has unsaved data and we make an AJAX call (such as to delete a row in another grid) the user gets the "Are you sure you want to navigate away...you have unsaved data..." message which is not good.
是否有可能燮preSS onbeforeunload事件对AJAX调用？或者是有可能检测到一个呼叫的是的AJAX调用？否则，我们将不得不让黑客！
Is it possible to suppress the onbeforeunload event for AJAX calls? Or is it possible to detect that a call is an AJAX call? Otherwise we'll have to get hacking!
感谢
推荐答案
如果你想用一个超链接触发回发，有一个简单的解决方法： 而不是
If you want to trigger your postback by a hyperlink, there is a simple workaround: Instead of
＆LT; A HREF =JavaScript的：submitFunction（）;＆GT;提交＆LT; / A＆GT;
或
＆LT; A HREF =JavaScript的:;的onclick =submitFunction（）;＆GT;提交＆LT; / A＆GT;
只需使用此code：
＆LT; A HREF =＃的onclick =submitFunction（）;＆GT;提交＆LT; / A＆GT;
看来，IE浏览器触发onbeforeunload事件，如果一个超链接的href属性的内容不是当前的页面（这锋利的字符表示）。
It seems that IE fires the onbeforeunload event if the content of the href-attribute of a hyperlink is not the current page (which the sharp character indicates).
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