如果多个脚本设置window.onload会发生什么? [英] What happens if multiple scripts set window.onload?
问题描述
StackOverflow和其他网站上有很多关于避免命名空间冲突问题的帖子。在我的场景中,我只是希望在可以访问DOM之后执行我的JavaScript中的方法。
There are a number of posts on StackOverflow and other websites regarding the problem of avoiding namespace collisions. In my scenario, I just want a method in my JavaScript to be executed after the DOM is accessible.
如果我执行以下操作将避免命名空间冲突?
If I do the following will it avoid namespace collisions?
<script type="text/javascript">window.onload = function() { //Define my namespace var here, and execute all my code }</script>
如果稍后注入的脚本也设置了onload函数怎么办?我的会被覆盖吗?我完全知道我可以测试一下,但我也想要一些反馈,因为我是JavaScript的新手,可能还有其他一些场景会做我不知道的事情。
What if a script that is injected later also sets an onload function ? Will mine get overwritten? I'm fully aware that I can test this out, but I would also like some feedback as I am new to JavaScript and there could be a number of other scenarios which will do the something that I am not aware of.
编辑:我只需要支持Safari 5.0 +
I need to support only Safari 5.0+
推荐答案
是的,最后一个一个将覆盖之前的。
Yes, the last one will overwrite the previous ones.
解决方案:使用新的事件API: addEventListener
。
The solution: use the new event API: addEventListener
.
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