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Showing content from https://learnbyexample.github.io/learn_js_regexp/further-reading.html below:

Further Reading - Understanding JavaScript RegExp

1. Cover
2. Buy PDF/EPUB versions
3. 1. Preface
4. 2. Why is it needed?
5. 3. RegExp introduction
6. 4. Anchors
7. 5. Alternation and Grouping
8. 6. Escaping metacharacters
9. 7. Dot metacharacter and Quantifiers
10. 8. Interlude: Tools for debugging and visualization
11. 9. Working with matched portions
12. 10. Character class
13. 11. Groupings and backreferences
14. 12. Interlude: Common tasks
15. 13. Lookarounds
16. 14. Unicode
17. 15. Further Reading
18. 16. Exercise Solutions


19.    Source code
20.    My Blog
21.    My Books
22.    learnbyexample weekly
23.    Twitter

Note that some of these resources are not specific to JavaScript. So you'll have to adapt them to JavaScript's syntax.

• MDN: Regular Expressions — documentation and examples
• stackoverflow: JavaScript regexp
• XRegExp — utility with features like metacharacter escaping, recursive matching, etc
• JSVerbalExpressions — construct regexp with natural language terms
• CommonRegexJS — collection of common regular expressions
• Awesome Regex — curated collection of libraries, tools, frameworks and software
• randexp.js — Generate strings that match a given regular expression
• stackoverflow: regex FAQ
  • stackoverflow: regex tag is a good source of exercise questions
• rexegg — tutorials, tricks and more
• regular-expressions — tutorials and tools
• regex101 and regexr — visual aid and online testing tool for regular expressions, select flavor as JavaScript before use
• regulex and debuggex — visualization of regexp as railroad diagrams
• regexcrossword — tutorials and puzzles
• swtch — stuff about regular expression implementation engines
• news.ycombinator: collection of regexp related resources

Here are some links for specific topics:

• rexegg: best regex trick
• regular-expressions: matching numeric ranges
• regular-expressions: Zero-Length Matches
• stackoverflow: Greedy vs Reluctant vs Possessive Quantifiers
• cloudflare: Details of the Cloudflare outage on July 2, 2019 — see appendix for details about CPU exhaustion caused due to regular expression backtracking

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