我需要删除事件侦听器吗？ [英] Do I need to remove event listeners?

问题描述

如果我有一个带有孩子的父元素，其中有事件侦听器绑定到它们，我需要删除那些事件侦听器才能清除父进程？ （即 parent.innerHTML =''; ）如果事件侦听器从DOM元素中移除时未绑定事件侦听器，那么是否存在内存泄漏？

If I have a parent element with children who have event listeners bound to them, do I need to remove those event listeners before I clear the parent? (i.e., parent.innerHTML = '';) Could there be memory leaks if event listeners are not unbound from an element if it's removed from the DOM?

推荐答案

简答：是

浏览器可以正确处理，并自己删除这些处理程序。有一些旧的浏览器（IE 6和7，如果我记得正确），这是搞砸了。是的，可能会有内存泄漏。你不必担心这一点，但你需要。请查看此文档。

Long answer: Most browsers handle this correctly and remove those handlers themselves. There are some older browsers (IE 6 and 7, if i recall correctly) that are messing this up. Yes, there could be memory leaks. You should not have to worry about this, but you need to. Have a look at this document.

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