[{"data":1,"prerenderedAt":105},["ShallowReactive",2],{"post-regex-testing-guide":3},{"id":4,"title":5,"body":6,"description":95,"extension":96,"meta":97,"navigation":99,"path":100,"seo":101,"sitemap":102,"stem":103,"__hash__":104},"blog/blog/regex-testing-guide.md","A Developer's Guide to Regex Testing Without the Headache",{"type":7,"value":8,"toc":88},"minimark",[9,13,18,21,25,28,63,67,78,82,85],[10,11,12],"p",{},"Regular expressions are powerful and confusing in equal measure. One misplaced quantifier and your pattern matches everything — or nothing.",[14,15,17],"h2",{"id":16},"why-regex-is-hard","Why Regex Is Hard",[10,19,20],{},"The syntax is dense. There's no IDE-style autocomplete. And the behavior differs slightly between engines (JavaScript, Python, PCRE). Developers waste hours on trial-and-error when a proper testing tool would solve it in minutes.",[14,22,24],{"id":23},"what-good-regex-testing-looks-like","What Good Regex Testing Looks Like",[10,26,27],{},"A proper regex tester should give you:",[29,30,31,39,45,51,57],"ol",{},[32,33,34,38],"li",{},[35,36,37],"strong",{},"Real-time matching"," — see highlights as you type",[32,40,41,44],{},[35,42,43],{},"Capture group extraction"," — know exactly what each group captures",[32,46,47,50],{},[35,48,49],{},"Multiple test strings"," — test against several inputs at once",[32,52,53,56],{},[35,54,55],{},"Flag support"," — toggle global, multiline, case-insensitive",[32,58,59,62],{},[35,60,61],{},"Replace mode"," — preview substitutions before applying",[14,64,66],{"id":65},"common-patterns-worth-memorizing","Common Patterns Worth Memorizing",[68,69,74],"pre",{"className":70,"code":72,"language":73},[71],"language-text","Email:     ^[\\w.-]+@[\\w.-]+\\.\\w{2,}$\nURL:       https?://[\\w.-]+(?:/[\\w./?%&=-]*)?\nIPv4:      \\b\\d{1,3}(\\.\\d{1,3}){3}\\b\nISO Date:  \\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\n","text",[75,76,72],"code",{"__ignoreMap":77},"",[14,79,81],{"id":80},"testing-locally-vs-online","Testing Locally vs Online",[10,83,84],{},"Online regex testers (regex101, regexr) are excellent — but they log your test strings. If you're matching against real data (emails, IPs, file paths), test locally.",[10,86,87],{},"DevKitHub's Regex Tester gives you the same real-time experience without sending anything over the network.",{"title":77,"searchDepth":89,"depth":89,"links":90},2,[91,92,93,94],{"id":16,"depth":89,"text":17},{"id":23,"depth":89,"text":24},{"id":65,"depth":89,"text":66},{"id":80,"depth":89,"text":81},"Stop guessing with regex. Learn how to test, debug, and validate regular expressions locally with real-time feedback.","md",{"date":98},"2026-06-15",true,"/blog/regex-testing-guide",{"title":5,"description":95},{"loc":100},"blog/regex-testing-guide","_hxekZxOjWonfDtkrbfZgmTEoGs7BR44YkkAdf9nN7Y",1782010900793]