Internet Explorer 弹出窗口，其文本为确定要离开此页面吗? WindowEventHandlers.onbeforeunload

The Internet Explorer popup with text as Are you sure you want to leave this page? is the result of WindowEventHandlers.onbeforeunload

的 onbeforeunload 属性href ="https://developer.mozilla.org/zh-CN/docs/Web/API/WindowEventHandlers" rel ="nofollow noreferrer"> WindowEventHandlers mixin是 beforeunload 事件.当窗口即将卸载其资源时，会触发这些事件.此时，文档仍然可见，事件仍可取消.

The onbeforeunload property of the WindowEventHandlers mixin is the EventHandler for processing beforeunload events. These events fire when a window is about to unload its resources. At this point, the document is still visible and the event is still cancelable.

有多种策略可用于处理此弹出窗口.但是，作为跨浏览器解决方案，您可以禁用此对话框，调用executeScript()将window.onbeforeunload设置为 function() {}; ，并且可以使用以下解决方案:

There are different strategies available to handle this popup. However, as a Cross Browser solution, you can disable this dialog invoking the executeScript() to set window.onbeforeunload as function() {}; and you can use the following solution:

((JavascriptExecutor)driver).executeScript("window.onbeforeunload = function() {};");

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