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javascript - Problem with regular expression g

When adding g, when the button is clicked for the first time, true is returned. When the button is clicked again, false is returned. Why? The result returned when g is not added is correct. {code...}

黄舟 2017-05-19 10:45:29

To install BrowserSync on macbook, enter npm install -g browser- in the terminal

When installing BrowserSync on macbook, enter npm install -g browser-sync in the terminal and report an error? ? Last login: Fri Apr 5 13:01:36 on ttys000192:~ apple1$ npm install -g browser-syncnpm WARN checkPermissions Missing write access to /usr

王大木 2019-04-05 17:03:37

How to set the indentation of gg=G in vim to 4 characters

Normal tab indentation is 4 characters, but when batch indentation is performed, it is 8 characters (such as gg=G, 20G=40G). How to set it to only indent 4 characters?

迷茫 2017-05-16 16:39:16

javascript - Regular expression /(\d)(?=(\d{3})+\.)/g

How to add a comma to every three digits of the number to the left of a floating point number, such as converting 12000000.11 into "12,000,000.11"? function commafy(num){ {code...}} I don't know how to understand this regular rule. /(d)(?=(d{3})+.)/g I don’t know how it works.

伊谢尔伦 2017-05-19 10:35:23

linux - How do I know if gcc g++ is installed in my centos?

I want to know how to know if gcc g++ is installed in my system

我想大声告诉你 2017-05-27 17:44:48