regex for only whitespace alone, not white-space in between characters?

Question

In javascript, what is the regex for alone spaces, not spaces between characters?

\s+ works for all whitespace.

What I am trying to do is if the string is just whitespace and not white-space with other characters, then do something.

Here is what I have so far: if(/regexp/i.exec(str) !== null) // do something

Note that the dup answer also matches empty strings. To match one or more spaces, use `^\s+$` — David Hellsing, Jun 15 '14 at 14:57

David Hellsing · Accepted Answer · 2014-06-15T21:17:00.270

2

Try something like:

if (/^\s+$/i.test(str)) {
    // string contains only whitespaces
}

edited Jun 15 '14 at 21:17

answered Jun 15 '14 at 14:47

David Hellsing

Sorry hadn't seen your post. Your solution is the same as mine, so +1 :-) – Robby Cornelissen Jun 15 '14 at 14:55

score 0 · Answer 2 · answered Jun 15 '14 at 14:50

0

if(str.replace(/\s/g, "").length===0)
{


}

Replaces all the white spaces left and if no other character is left then the length should be 0

answered Jun 15 '14 at 14:50

Srinath Mandava

2 Answers2