JavaScript Regular Expression Testing

JS RegExp tester online. Test Subject: Match, Replace, Search, Split, RegExp: Test, Exec. Pattern: any. Test subject from text or file.

Subject

Pattern

Replacement

Flags

Global

Case-insensitive

Multi-line

Unicode

Sticky mode

Subject

RegExp

Match result

Matched

Index

Index	Matched parenthesized substring
First substrings of shown.

Empty set

Index	Matched
First match of shown.

Replace result

Split result

Index	String

First results of shown.

Search result

Index

Test result

Return

Last index

Exec result

Index	Matched parenthesized substring
Empty set
First substrings of shown.

Empty set