Yeh regex tester aapko JavaScript regular expressions live banane aur debug karne deta hai, jaise hi aap type karte hain har match aapke sample text mein highlight ho jaata hai. Ek online regex tester ke roop mein yeh capture groups, named groups aur har match ka start index dikhata hai, taaki aap dekh sakein ki ek pattern theek kya pakadta hai. i, m, s aur u flags toggle karke regular expressions ko alag conditions mein test karein bina dobara likhe; matching hamesha global hoti hai, isliye har match list hota hai. Yeh wahi RegExp engine use karta hai jo aapke browser ke saath aata hai, isliye results wahi reflect karte hain jo aapka JavaScript code runtime par karega. Validation likhne wale developers, parsing rules check karne wale QA engineers, aur regexp seekhne walon ke liye useful. Sab kuch aapke browser mein locally chalta hai, isliye aapke patterns aur test data device se bahar nahi jaate.
Features
Pattern type karte hi har match ko test string mein live highlight karta hai
Har match ke liye numbered capture groups aur named groups dikhata hai
Har match ka start index report karta hai, kram se numbered
i, m, s aur u flags ko alag-alag toggle karein; matching hamesha global hoti hai
Sahi results ke liye native browser JavaScript RegExp engine use karta hai
Pattern syntax errors saamne laata hai taaki aap invalid expressions tezi se theek kar sakein
Patterns aur test text poori tarah aapke browser mein process karta hai
Regex Tester kaise use karein
Apna regular expression pattern field mein type ya paste karein.
Pattern ke paas zaroori flags (i, m, s, u) toggle karein.
Apna sample text test string box mein paste karein.
Results panel mein highlighted matches, capture groups aur positions padhein.
Example
Input
Pattern: (\w+)@(\w+)\.com Flags: g
Text: contact alice@example.com or bob@test.com
Output
Match 1: alice@example.com group1=alice group2=example
Match 2: bob@test.com group1=bob group2=test
Har email se nikale gaye capture groups ke saath do matches.
Common errors aur troubleshooting
g flag off karne par bhi har match list hota hai. — Tester hamesha global search karta hai taaki aap har match dekh sakein. Aapke apne code mein g ke bina regex exec() ya match() ke saath pehle match par ruk jaata hai, isliye jab saare matches chahiye tab wahan g jodein.
Case-sensitive pattern 'Error' aur 'error' jaise shabd miss kar deta hai. — i (ignore case) flag on karein taaki pattern letter case ke bawajood match kare.
Multiline text mein ek dot (.) newline characters se match nahi kar raha. — s (dotall) flag enable karein taaki . line breaks se bhi match kare.
^ aur $ sirf poore string par anchor hote hain, har line par nahi. — m (multiline) flag enable karein taaki har line ke start aur end par anchor ho.
Named groups ya Unicode property escapes (\p{...}) error dete hain. — u (unicode) flag enable karein, jo \p{...} escapes aur strict Unicode handling ke liye zaroori hai.
Pattern field ek syntax error dikhata hai. — Unbalanced brackets ya parentheses check karein aur literal special characters jaise . ya ( ko backslash se escape karein.
Aksar pooche jaane wale sawaal
Regex tester kya hota hai?
Ek regex tester ek regular expression ko sample text ke against chalata hai aur real time mein dikhata hai ki kya match hota hai. ArrayKit ka Regex Tester har match highlight karta hai, capture groups list karta hai aur har match position report karta hai taaki aap patterns visually debug kar sakein.
Regex Tester kaunsa regex flavour use karta hai?
JavaScript — yeh wahi RegExp engine use karta hai jo aapka browser chalata hai, isliye matches theek wahi reflect karte hain jo aapka JS code karega.
Regex Tester mein capture groups kaise test karun?
Apne pattern ke hisson ko parentheses mein wrap karein aur apne text ke against chalayein. Har match apne numbered capture groups aur koi named groups list karta hai, saath hi woh index bhi jahan match shuru hota hai.
Regex Tester mein kaunse flags toggle kar sakta hoon?
Aap i (ignore case), m (multiline), s (dotall) aur u (unicode) ko alag-alag on ya off kar sakte hain taaki regular expressions ko alag conditions mein test kar sakein. Ek g (global) button bhi hai, lekin matching hamesha global hoti hai, isliye dono haalat mein har match list hota hai.
Kya Regex Tester multiline text handle kar sakta hai?
Haan. Multiline input paste karein aur ^ aur $ ko per line anchor karne ke liye m flag enable karein, ya . ko line breaks ke aar-paar le jaane ke liye s flag.
Kya mere patterns aur test data kahin bheje jaate hain?
Nahi. Regex Tester sab kuch aapke browser mein locally evaluate karta hai, isliye aapke patterns aur sample text device se bahar nahi jaate aur kuch bhi server par upload nahi hota.
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