javascript - 页面加载后如何使JavaScript执行？(How to make JavaScript execute after page load?)

Question

posted Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

I'm executing an external script, using a <script> inside <head> .

(我正在使用<head>内的<script>执行外部脚本。)

Now since the script executes before the page has loaded, I can't access the <body> , among other things.

(现在，由于脚本是在页面加载之前执行的，因此我无法访问<body> 。)

I'd like to execute some JavaScript after the document has been "loaded" (HTML fully downloaded and in-RAM).

(在文档“加载”后（HTML已完全下载并在RAM中），我想执行一些JavaScript。)

Are there any events that I can hook onto when my script executes, that will get triggered on page load?

(执行脚本时，是否有任何我可以钩住的事件会在页面加载时触发？)

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1 Reply

深蓝 · Answer 1 · 2021-02-21T04:14:44+0000

These solutions will work:

(这些解决方案将起作用：)

<body onload="script();">

or

(要么)

document.onload = function ...

or even

(甚至)

window.onload = function ...

Note that the last option is a better way to go since it is unobstrusive and is considered more standard .

(请注意， 最后一个选项是更好的选择，因为它不引人注目并且被认为是更标准的。)