本文介绍了在preventDefault之后重新触发事件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我已经用preventDefault阻止了一个事件。现在我想重新抛出它。我尝试了fireEvent，但没有奏效。有没有办法实现这一点？
I have stopped an event with preventDefault. Now I want to rethrow it. I tried the fireEvent but that did not work. Is there a way to achieve this?
更新而不是fire事件，我创建了一个新的事件实例并使用elem.dispatchEvent（clickEvent ）;
UPDATE Instead of fire event I created a new instance of the event and used elem.dispatchEvent(clickEvent);
Event.addNativePreviewHandler(new Event.NativePreviewHandler() { public void onPreviewNativeEvent(NativePreviewEvent event) { if (event.getTypeInt() == Event.ONMOUSEDOWN) { Element elem = JSHelper.elementFromPoint(event.getNativeEvent().getClientX(), event.getNativeEvent().getClientY()); EventListener listener = Event.getEventListener(elem); if((listener instanceof ListBox)) { event.getNativeEvent().preventDefault(); //// ((ListBox) listener).fireEvent(event); int y = event.getNativeEvent().getClientY(); int x = event.getNativeEvent().getClientX(); int screenX = event.getNativeEvent().getScreenX(); int screenY = event.getNativeEvent().getScreenY(); NativeEvent clickEvent = Document.get().createMouseEvent( "click",true, false,0, screenX, screenY, x, y, false, false, false, false, NativeEvent.BUTTON_LEFT, elem); elem.dispatchEvent(clickEvent); } } } });推荐答案
为什么你尝试再次解雇？试着调用你应该使用的事件处理函数
Why do u try to fire it again? Just try to call the event handler function you supposed to
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在preventDefault之后重新触发事件
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