跳转到内容
View in the app

A better way to browse. Learn more.

彼岸论坛

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.
欢迎抵达彼岸 彼岸花开 此处谁在 -彼岸论坛

[问与答] 针对某个网站写油猴脚本时获取不到 dom 元素

发表于

等页面完全加载后,打开开发者工具,“元素”面板显示的 dom 结构大致如下:

<html lang="en">
  <head>
  </head>
  <body>
  	<main id="main">...</main>
  </body>
</html>

此时还没有点击展开 main 标签,在控制台无法获取 main 标签下所有的子元素(空集合或 null ),只有点击展开 main 标签后,才能获取到它下面的子元素。

请问这是什么原因?

谢谢。

Featured Replies

No posts to show

创建帐户或登录来提出意见

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.