How to remove double underscore using JavaScript

Question

How do I remove double or multiple underscores in a string using JavaScript?

E.g.

stack__overflow___website

I will need to eliminate the __ and replace it with a single _.

score 17 · Accepted Answer · answered Feb 19 '14 at 10:38

17

You can use replace() with a regex to match consecutive underscores:

'stack__overflow___website'.replace(/_+/g, '_')

answered Feb 19 '14 at 10:38

techfoobar

thank you! here's what i got from your code var _removeUnderscores = _convertLowerCase.replace(/_+/g, '_'); – nhoyti Feb 19 '14 at 12:11

score 3 · Answer 2 · answered Feb 19 '14 at 10:37

3

var myString = "stack__overflow___website",
    myFormattedString = myString.split('__').join('_');

answered Feb 19 '14 at 10:37

Tim Vermaelen

Interesting approach. I wonder what the performance considerations are here. – Lix Feb 19 '14 at 10:38
1

this is only one case. – user2167382 Feb 19 '14 at 10:38
1

they are supposed to be better. yet downvoted :s http://stackoverflow.com/questions/441018/replacing-spaces-with-underscores-in-javascript – Tim Vermaelen Feb 19 '14 at 10:39

2 Answers2