Basic Regex to remove any space

Question

I'm looking for a basic regex that removes any space. I want to use it for ZIP code.

Some people insert space after, before or in between the ZIP code.

I'm using /^\d{5}$/ now. I want to expand it to include space removal.

How can this be improved?

do you use it for verification?

Karoly Horvath
– Karoly Horvath

2011-09-06 21:48:15 +00:00
Commented Sep 6, 2011 at 21:48 — Karoly Horvath
– Karoly Horvath, Commented Sep 6, 2011 at 21:48

sidyll · Accepted Answer · 2011-09-06 21:52:37Z

3

(I'm considering you want to remove spaces in your string, not verifying if it is valid even with spaces)

You can substitute one or more spaces (globally)

/\s+/g

by nothing.

zip.replace(/\s+/g, "");

Example in my browser's JS console:

> " 02 1 3 4".replace(/\s+/g, ""); "02134"

edited Sep 6, 2011 at 21:52

answered Sep 6, 2011 at 21:47

sidyll

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1 Comment

sidyll Over a year ago

It depends on your design flow. If you want to first remove the spaces and then verify it, apply what I demonstrated here and then use your current regex to see if the input is valid. Now if you want to combine the approaches, verifying if it's valid even with spaces all at once, use @Jacob Eggers' answer.

Jacob Eggers · Accepted Answer · 2011-09-06 21:49:29Z

3

Here's a regex you can use instead of your current one to ignore any and all spaces.

/^(\s*\d){5}\s*$/

answered Sep 6, 2011 at 21:49

Jacob Eggers

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2 Comments

sidyll Over a year ago

@Mohsen: It certainly works, try if (" 123 45 ".match(/^(\s*\d){5}\s*$/)) console.log("yes");

Jesse Over a year ago

this will tell you if you have 5 digits, but won't trim the spaces - isn't that what OP wants?

Jesse · Accepted Answer · 2011-09-06 22:06:03Z

If you're sanitizing a form input or something, it's probably easiest to use:

zip = zip.replace(/\D/g,'');

you can then validate without a regex, just use the .length property on String.

if(zip.length != 5) alert('failed!');

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