Anh-Jo Anh-Jo
Anh-Jo
/ regexCheatsheet.js
Created
July 12, 2019 09:17
— forked from sarthology/regexCheatsheet.js
A regex cheatsheet 👩🏻💻 (by Catherine)
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| let regex; | |
| /* matching a specific string */ | |
| regex = /hello/; // looks for the string between the forward slashes (case-sensitive)... matches "hello", "hello123", "123hello123", "123hello"; doesn't match for "hell0", "Hello" | |
| regex = /hello/i; // looks for the string between the forward slashes (case-insensitive)... matches "hello", "HelLo", "123HelLO" | |
| regex = /hello/g; // looks for multiple occurrences of string between the forward slashes... | |
| /* wildcards */ | |
| regex = /h.llo/; // the "." matches any one character other than a new line character... matches "hello", "hallo" but not "h\nllo" | |
| regex = /h.*llo/; // the "*" matches any character(s) zero or more times... matches "hello", "heeeeeello", "hllo", "hwarwareallo" |
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| // Generate unique IDs for use as pseudo-private/protected names. | |
| // Similar in concept to | |
| // <http://wiki.ecmascript.org/doku.php?id=strawman:names>. | |
| // | |
| // The goals of this function are twofold: | |
| // | |
| // * Provide a way to generate a string guaranteed to be unique when compared | |
| // to other strings generated by this function. | |
| // * Make the string complex enough that it is highly unlikely to be | |
| // accidentally duplicated by hand (this is key if you're using `ID` |