RegEx to remove an empty attribute? E.g. if (class=" " || class="") remove; else leave class

Question

This question is for general purpose, and no, "you should never regex html"...

What is the regex to remove an empty attribute, such as

class="" or class="   "

without knowing the number of whitespaces inbetween " "?

Plus: Leaving the class tag untouched if there are other chars inside?

I got a solution for complicated regex yesterday, however, I was not able to strip that down to the specific case mentioned above.

Thank you!

elclanrs · Accepted Answer · 2012-09-14T08:20:12.697

5

Try with the following regex:

/class="\s*?"/

edited Sep 14 '12 at 08:20

answered Sep 14 '12 at 08:02

elclanrs

score 2 · Answer 2 · answered Sep 14 '12 at 08:05

If you don't care about checking whether or not it's actually inside an HTML tag, you can use:

[a-z]+="\s*"

This could be used with .replace() such as:

str = str.replace(/[a-z]+="\s*"/ig, '');

The i will ignore case while the g will "replace" all instances matched.

score 1 · Answer 3 · answered Sep 14 '12 at 08:01

1

Replace /class="\s*"/ with an empty string.

answered Sep 14 '12 at 08:01

skunkfrukt

3 Answers3