# 1 SyntaxError: invalid regular expression flag s

**URL:** <https://forum.freecodecamp.org/t/1-syntaxerror-invalid-regular-expression-flag-s/447463>\
**Category:** freeCodeCamp Support\
**Created:** [February 20, 2021, 10:10pm UTC](https://forum.freecodecamp.org/t/1-syntaxerror-invalid-regular-expression-flag-s/447463 "2021-02-20T22:10:04Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![jwilkins.oboe](https://sea3.discourse-cdn.com/freecodecamp/user_avatar/forum.freecodecamp.org/jwilkins.oboe/32/179497_2.png) [@jwilkins.oboe](https://forum.freecodecamp.org/u/jwilkins.oboe)\
**Post date:** [February 20, 2021, 11:55pm UTC](https://forum.freecodecamp.org/t/1-syntaxerror-invalid-regular-expression-flag-s/447463/3 "2021-02-20T23:55:47Z")

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I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (`</>`) to add backticks around text.

 ![Pre-formatted-text](https://global.discourse-cdn.com/freecodecamp/original/3X/1/b/1b18854f1059217f29370444396145cc3a0cd8ae.gif)

See [this post](https://forum.freecodecamp.org/t/forum-code-formatting/25574) to find the backtick on your keyboard.  
**Note:** Backticks (`) are not single quotes (’).

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