Regular expression flags

The flags g, i, and m seem to be well-known regex flags in JavaScript. However, there are some lesser known useful flags. The "dotAll" s flag can be used to include newlines in a . wildcard match. The unicode u flag can be used to match instances of unicode characters in a string. The sticky y flag[1] can be used to start a search at a different index of the string than 0.

RegExp instances also have getter methods that can tell you which flags are enabled[2].

[2] MDN

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