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Regular Expression Problem
Pattern needed to strip off empty HTML tags
chameleon

10+ Year Member



 
Msg#: 2691 posted 6:56 pm on Nov 8, 2004 (gmt 0)

Hi All:

I'm trying to find the right Regexp string to remove empty SPAN tags
from an HTML string.

Say I have a string like so, and I want to remove the empty span tags:

<span>This is my text</span>

A simple expression like this /<SPAN>(.*)?<\/SPAN>/gi will give me the
text between the two span tags, which I can then use in a replace
statement.

This gets much more complicated when we have nested tags, however.
For example:

<span style="font-weight: bold>one <span>two <span style="color:
red">three</span> four</span> five</span>

What I really want after the replace statement is this:

<span style="font-weight: bold>one two <span style="color:
red">three</span> four five</span>

I'm having trouble crafting the perfect expression for this. I can't
seem to get my head around the right solution to handle the greedy vs
non-greedy thing, and not eliminate the wrong closing tag.

Is this even possible with straight expressions?

Thanks in advance for any help you can provide!

 

DrDoc

WebmasterWorld Senior Member drdoc us a WebmasterWorld Top Contributor of All Time 10+ Year Member



 
Msg#: 2691 posted 10:15 pm on Nov 9, 2004 (gmt 0)

You'd have to use backreferences and lookups... which I'm not entirely sure is supported in JavaScript. Is this for a piece of code that gets submitted through a form? If so, it might be easier to do it on the server side. JS's support for regular expressions isn't the greatest.

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