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Js cross-browser event handler and js cross-browser event
<!DOCTYPE html>When you click the aaa part, the ul display position follows your mouse position to display it. You can add the css style and set a timer to make a very brilliant effect.
What is the difference between events and event handlers in JS?It is estimated that you do not understand the event bubble and capture phases. You can view the information if you have a sentence or two. Document is the object of the entire document. As long as you move the mouse without removing the webpage window, the document mouse event is triggered. If you release the mouse on the button, at this time, all the parent-level onmouseup events of the button will be triggered, and the events will bubble up until the root element (document ). If you move it away, it will only trigger the onmouseup event of the elements covered by your current mouse, and then bubble up.
How to Use JS to capture browser close events? I want to record some logs when the browser is closed to be compatible with Firefox and IE 6, 7, and 8 3Q.Js cannot be so wide.
My answer to the same question (zhidao.baidu.com/question/211203614.html:
My Google results are: No way.
You can try to replace session timeout.
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