regex match number in parentheses (Firefox) [duplicate]

-1

This question already has an answer here:

Javascript regex negative lookbehind not working in firefox

3 answers

I have string like this:

(3) Request Inbox

Now I want to detect number 3 in parentheses. Pay attention just 3. I write this regex in javascript but it doesn't work in Firefox.

var regex = new RegExp(/(?<=()d+(?:.d+)?(?=))/g);

Error in console: SyntaxError: invalid regexp group

Demo link

edited Nov 15 '18 at 6:10

asked Nov 15 '18 at 5:54

Ehsan Ali

47511032

marked as duplicate by Mohammad, Wiktor Stribiżew javascript
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Nov 15 '18 at 7:40

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

If you just want to match the number, do you even need the lookahead? What about something as simple as: /^((d+))/g - it matches in group 1. Or do you mean, only the full match?

– fubar
Nov 15 '18 at 6:22

add a comment |

-1

This question already has an answer here:

Javascript regex negative lookbehind not working in firefox

3 answers

I have string like this:

(3) Request Inbox

Now I want to detect number 3 in parentheses. Pay attention just 3. I write this regex in javascript but it doesn't work in Firefox.

var regex = new RegExp(/(?<=()d+(?:.d+)?(?=))/g);

Error in console: SyntaxError: invalid regexp group

Demo link

edited Nov 15 '18 at 6:10

asked Nov 15 '18 at 5:54

Ehsan Ali

47511032

marked as duplicate by Mohammad, Wiktor Stribiżew javascript
Users with the javascript badge can single-handedly close javascript questions as duplicates and reopen them as needed.

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Nov 15 '18 at 7:40

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

If you just want to match the number, do you even need the lookahead? What about something as simple as: /^((d+))/g - it matches in group 1. Or do you mean, only the full match?

– fubar
Nov 15 '18 at 6:22

add a comment |

-1

This question already has an answer here:

Javascript regex negative lookbehind not working in firefox

3 answers

I have string like this:

(3) Request Inbox

Now I want to detect number 3 in parentheses. Pay attention just 3. I write this regex in javascript but it doesn't work in Firefox.

var regex = new RegExp(/(?<=()d+(?:.d+)?(?=))/g);

Error in console: SyntaxError: invalid regexp group

Demo link

edited Nov 15 '18 at 6:10

asked Nov 15 '18 at 5:54

Ehsan Ali

47511032

This question already has an answer here:

Javascript regex negative lookbehind not working in firefox

3 answers

I have string like this:

(3) Request Inbox

Now I want to detect number 3 in parentheses. Pay attention just 3. I write this regex in javascript but it doesn't work in Firefox.

var regex = new RegExp(/(?<=()d+(?:.d+)?(?=))/g);

Error in console: SyntaxError: invalid regexp group

Demo link

This question already has an answer here:

Javascript regex negative lookbehind not working in firefox

3 answers

javascript regex string

edited Nov 15 '18 at 6:10

asked Nov 15 '18 at 5:54

Ehsan Ali

47511032

edited Nov 15 '18 at 6:10

asked Nov 15 '18 at 5:54

Ehsan Ali

47511032

edited Nov 15 '18 at 6:10

asked Nov 15 '18 at 5:54

Ehsan Ali

47511032

asked Nov 15 '18 at 5:54

Ehsan Ali

47511032

asked Nov 15 '18 at 5:54

Ehsan Ali

47511032

marked as duplicate by Mohammad, Wiktor Stribiżew javascript
Users with the javascript badge can single-handedly close javascript questions as duplicates and reopen them as needed.

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Nov 15 '18 at 7:40

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

marked as duplicate by Mohammad, Wiktor Stribiżew javascript
Users with the javascript badge can single-handedly close javascript questions as duplicates and reopen them as needed.

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Nov 15 '18 at 7:40

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

If you just want to match the number, do you even need the lookahead? What about something as simple as: /^((d+))/g - it matches in group 1. Or do you mean, only the full match?

– fubar
Nov 15 '18 at 6:22

add a comment |

If you just want to match the number, do you even need the lookahead? What about something as simple as: /^((d+))/g - it matches in group 1. Or do you mean, only the full match?

– fubar
Nov 15 '18 at 6:22

If you just want to match the number, do you even need the lookahead? What about something as simple as: /^((d+))/g - it matches in group 1. Or do you mean, only the full match?

– fubar
Nov 15 '18 at 6:22

add a comment |

2 Answers
2

active

oldest

votes

For a full match try this:

var regex = new RegExp(/(?=d+))d+/g);

answered Nov 15 '18 at 6:27

Andrey Starkov

894

Welcome to StackOverflow! Your answer need more explanation about how the code works to be a good answer.

– Foo
Nov 15 '18 at 6:30

add a comment |

Positive lookbehind is not supported by most browsers so use an alternative way to get your answer.

Something like this,

var string = "somestring(12)";
var exp = /(?:()(d+)(?:.d+)?(?=))/;
var mat = string.match(exp);

if(mat) 
 console.log(mat[1]);// second index

This should only give 12 as the answer

edited Nov 15 '18 at 8:33

Ehsan Ali

47511032

answered Nov 15 '18 at 6:40

Simba3696

267

it has problem, please check it https://regex101.com/r/eNOcvx/2

– Ehsan Ali
Nov 15 '18 at 8:12

1

The first parenthesis is shown as 'matched' string but when you get the matched group it will come out as number only

– Simba3696
Nov 15 '18 at 8:19

add a comment |

2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

For a full match try this:

var regex = new RegExp(/(?=d+))d+/g);

answered Nov 15 '18 at 6:27

Andrey Starkov

894

Welcome to StackOverflow! Your answer need more explanation about how the code works to be a good answer.

– Foo
Nov 15 '18 at 6:30

add a comment |

For a full match try this:

var regex = new RegExp(/(?=d+))d+/g);

answered Nov 15 '18 at 6:27

Andrey Starkov

894

Welcome to StackOverflow! Your answer need more explanation about how the code works to be a good answer.

– Foo
Nov 15 '18 at 6:30

add a comment |

For a full match try this:

var regex = new RegExp(/(?=d+))d+/g);

answered Nov 15 '18 at 6:27

Andrey Starkov

894

For a full match try this:

var regex = new RegExp(/(?=d+))d+/g);

answered Nov 15 '18 at 6:27

Andrey Starkov

894

answered Nov 15 '18 at 6:27

Andrey Starkov

894

answered Nov 15 '18 at 6:27

Andrey Starkov

894

answered Nov 15 '18 at 6:27

Andrey Starkov

894

Welcome to StackOverflow! Your answer need more explanation about how the code works to be a good answer.

– Foo
Nov 15 '18 at 6:30

add a comment |

Welcome to StackOverflow! Your answer need more explanation about how the code works to be a good answer.

– Foo
Nov 15 '18 at 6:30

Welcome to StackOverflow! Your answer need more explanation about how the code works to be a good answer.

– Foo
Nov 15 '18 at 6:30

add a comment |

Positive lookbehind is not supported by most browsers so use an alternative way to get your answer.

Something like this,

var string = "somestring(12)";
var exp = /(?:()(d+)(?:.d+)?(?=))/;
var mat = string.match(exp);

if(mat) 
 console.log(mat[1]);// second index

This should only give 12 as the answer

edited Nov 15 '18 at 8:33

Ehsan Ali

47511032

answered Nov 15 '18 at 6:40

Simba3696

267

it has problem, please check it https://regex101.com/r/eNOcvx/2

– Ehsan Ali
Nov 15 '18 at 8:12

1

The first parenthesis is shown as 'matched' string but when you get the matched group it will come out as number only

– Simba3696
Nov 15 '18 at 8:19

add a comment |

Positive lookbehind is not supported by most browsers so use an alternative way to get your answer.

Something like this,

var string = "somestring(12)";
var exp = /(?:()(d+)(?:.d+)?(?=))/;
var mat = string.match(exp);

if(mat) 
 console.log(mat[1]);// second index

This should only give 12 as the answer

edited Nov 15 '18 at 8:33

Ehsan Ali

47511032

answered Nov 15 '18 at 6:40

Simba3696

267

it has problem, please check it https://regex101.com/r/eNOcvx/2

– Ehsan Ali
Nov 15 '18 at 8:12

1

The first parenthesis is shown as 'matched' string but when you get the matched group it will come out as number only

– Simba3696
Nov 15 '18 at 8:19

add a comment |

Positive lookbehind is not supported by most browsers so use an alternative way to get your answer.

Something like this,

var string = "somestring(12)";
var exp = /(?:()(d+)(?:.d+)?(?=))/;
var mat = string.match(exp);

if(mat) 
 console.log(mat[1]);// second index

This should only give 12 as the answer

edited Nov 15 '18 at 8:33

Ehsan Ali

47511032

answered Nov 15 '18 at 6:40

Simba3696

267

Positive lookbehind is not supported by most browsers so use an alternative way to get your answer.

Something like this,

var string = "somestring(12)";
var exp = /(?:()(d+)(?:.d+)?(?=))/;
var mat = string.match(exp);

if(mat) 
 console.log(mat[1]);// second index

This should only give 12 as the answer

edited Nov 15 '18 at 8:33

Ehsan Ali

47511032

answered Nov 15 '18 at 6:40

Simba3696

267

edited Nov 15 '18 at 8:33

Ehsan Ali

47511032

edited Nov 15 '18 at 8:33

Ehsan Ali

47511032

edited Nov 15 '18 at 8:33

Ehsan Ali

47511032

answered Nov 15 '18 at 6:40

Simba3696

267

answered Nov 15 '18 at 6:40

Simba3696

267

answered Nov 15 '18 at 6:40

Simba3696

267

it has problem, please check it https://regex101.com/r/eNOcvx/2

– Ehsan Ali
Nov 15 '18 at 8:12

1

The first parenthesis is shown as 'matched' string but when you get the matched group it will come out as number only

– Simba3696
Nov 15 '18 at 8:19

add a comment |

it has problem, please check it https://regex101.com/r/eNOcvx/2

– Ehsan Ali
Nov 15 '18 at 8:12

1

The first parenthesis is shown as 'matched' string but when you get the matched group it will come out as number only

– Simba3696
Nov 15 '18 at 8:19

it has problem, please check it https://regex101.com/r/eNOcvx/2

– Ehsan Ali
Nov 15 '18 at 8:12

The first parenthesis is shown as 'matched' string but when you get the matched group it will come out as number only

– Simba3696
Nov 15 '18 at 8:19

add a comment |

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