浏览器默认的全局$功能 [英] Browser default global $ function
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问题描述
我注意到在某些浏览器中似乎有一个名为$的全局函数，它不是jQuery，但是我似乎找不到任何
I've noticed that there appears to be a global function called $ in some browsers which is NOT jQuery, but I can't seem to find any documentation on it. What is it?
Firefox:
Firefox:
Chrome:
推荐答案
Chrome和Firefox开发人员工具包含一些有用的快捷键/帮助程序，可在控制台内操作DOM.
Chrome and Firefox dev tools include some useful shortcuts/helpers to manipulate the DOM within the console.
这两种快捷方式都非常相似:$用于DOM选择，$0-$4用于最后X个选择"等等.
These shortcuts are pretty similar for both: $ for DOM selection, $0-$4 for "last X selections" and more.
有关完整参考，请参见:
For full reference see:
- Chrome开发者工具命令行API- https://developers.google.com/web/tools/chrome-devtools/console/command-line-reference
- Firefox Web控制台帮助程序- https://developer.mozilla.org/en-US/docs/Tools/Web_Console/Helpers
- Chrome Dev Tools Command Line API - https://developers.google.com/web/tools/chrome-devtools/console/command-line-reference
- Firefox Web Console Helpers - https://developer.mozilla.org/en-US/docs/Tools/Web_Console/Helpers
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