Regular Expression: replace string in javascript

Question

I want a regular expression to match a string like this "(192)"

the string starts with "(" and ends with ")" and numbers from 0 to 9 go between the parentheses.

I've tried this function before but it does not work:

function remove_garbage_numbers(str) {
    var find = '^\([0-9]\)$';
    var re = new RegExp(find, 'g');

    return str.replace(re, '');
}

Avinash Raj · Accepted Answer · 2015-02-19 15:41:43Z

1

You don't need to pass this to RegExp constructor. And you don't need to have a g modifier when anchors are used. And aso when anchors are used, it's safe to use m multiline modifier.

var find = /^\([0-9]+\)$/m;

ie,

function remove_garbage_numbers(str) {
    var re = /^\([0-9]+\)$/m;
    return str.replace(re, '');
}

OR

var re = new RegExp("^\\([0-9]+\\)$", 'm');

ie,

function remove_garbage_numbers(str) {

    var re = new RegExp("^\\([0-9]+\\)$", 'm');

    return str.replace(re, '');
}

Update

> "Main (191)|Health & Beauty (6)|Vision Care (8)".replace(/\(\d+\)/g, "")
'Main |Health & Beauty |Vision Care '

edited Feb 19, 2015 at 15:41

answered Feb 19, 2015 at 15:22

Avinash Raj

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4 Comments

epascarello Over a year ago

Well you would also need to alter the re line with this solution.

Scott Over a year ago

Could this be further simplified to str.replace(/^$[0-9]$$/g, '')?

Avinash Raj Over a year ago

yep, but you need to put + after the char class and you don't even need a g modifier.

Andrew_Nady Over a year ago

Sorry, it doesn't work I have the string "Main (191)|Health & Beauty (6)|Vision Care (8)" and I need it after replacing to be "Main|Health & Beauty|Vision Care"

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