Regex tester for JavaScript expressions

Test JavaScript regex with groups and indices. Isolated worker, 1 second limit, 100,000 text characters, 1,000 results and 500,000 captured characters. Not PCRE.

Your inputs stay herePUFFINMINT

Set your data

JavaScript expression (without / / delimiters)

Flags (g i m s u v y d)

Source text

Result

Enter your data and run the tool. Your result will appear here.

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How to use the tool

Fill in these fields: JavaScript expression (without / / delimiters), Flags (g i m s u v y d), Source text.
Select “Test expression” to obtain the result.

Method and principles

ECMAScript RegExp

Practical example

Input

JavaScript expression (without / / delimiters): \w+
Flags (g i m s u v y d): g
Source text: Puffinmint 123

Result

[
  {
    "index": 0,
    "match": "Puffinmint",
    "groups": [],
    "named": null
  },
  {
    "index": 11,
    "match": "123",
    "groups": [],
    "named": null
  }
]

Limits and checks

Limits and checks
Parameter	Value
JavaScript expression (without / / delimiters)	≤ 2000 characters
Flags (g i m s u v y d)	≤ 10 characters
Source text	≤ 100000 characters

Sources and further reading

MDN · RegExp

Regex tester for JavaScript expressions

Set your data

Result

How to use the tool

Method and principles

Practical example

Limits and checks

Sources and further reading

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