Javascript Regex - Converting string to number

Question

I have string where I want to remove any letters and hyphens. I have a code like below,

var s = '-9d 4h 3m',
    t = '1-22';

var p = /[^0-9-]+/g;
    r = s.replace(p, ''),
    a = t.replace(p, '');

console.log(r, a);

Here I want to remove hyphen if it is in between the numbers and omit at first. Any help or suggestions?

Fiddle

And you want to remove trailing hypens as well, or just "between" the numbers ? — adeneo
– adeneo, Commented May 21, 2015 at 10:18

Avinash Raj · Accepted Answer · 2015-05-21 10:44:44Z

3

Much more simpler one without using | operator.

string.replace(/(?!^-)\D/g, "")

DEMO

answered May 21, 2015 at 10:44

Avinash Raj

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1 Comment

karthik manchala Over a year ago

I just thought of replacing with \D.. +1 :P

karthik manchala · Accepted Answer · 2015-05-21 10:34:25Z

1

You can use the following regex:

var p = /[^0-9-]+|(?:(?!^)-)/g;

See Fiddle

answered May 21, 2015 at 10:34

karthik manchala

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3 Comments

Avinash Raj Over a year ago

OMG, i just failed to combine both of the regexs.

karthik manchala Over a year ago

@AvinashRaj happens.. :)

Igor Popov Over a year ago

I think that /[^0-9-]+|((?!^)-)/g would be enough, i.e. non-captive ?: is redundant

blairmeister · Accepted Answer · 2015-05-21 10:24:02Z

0

In your console log you put a comma between the variable but you need a plus like this. I have also change variable a so that it removes the -

var s = '-9d 4h 3m';
var t = '1-22';

var p = /[^0-9-]+/g;
var r = s.replace(p, '');
var a = t.replace("-", '');

console.log(r + " " + a);

answered May 21, 2015 at 10:24

blairmeister

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Comments

Community · Accepted Answer · 2017-05-23 10:26:53Z

0

https://stackoverflow.com/a/1862219/3464552 check over here this will be a solution.

var s = '-9d 4h 3m',
s = s.replace(/\D/g,'');

edited May 23, 2017 at 10:26

CommunityBot

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answered May 21, 2015 at 10:32

ANR Upgraded Version

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