Javascript Regular Expression for nested CSS classes

Question

following my question here, I have been trying to write a similar bit of code in Javascript that would detect a range of Unicode characters occurring in the text from nested CSS classes. So far, I was able to make it work on DIV Classes, for instance:

$(document).ready(function() {
    $('h2.ClassName').each(function(index, DOMElement){
        if(/[\uE000-\uF8FF]+/.test($(DOMElement).text())) {
            $(this).removeClass('ClassName').addClass('CSS-ClassName');
        }
    }) 
});

However, a similar Javascript does not work on the following classes:

<ul>
    <h4 class="ClassName">Text</h4>
    <li class="ClassName">Text</li>
<ul>

Any idea?

Thanks indeed,

Regards,

I.

@Mayilarun, bharathi, the Javascript code for h2.classname works fine, however I cannot use a similar approach for UL Classes. The HTML example is to show how those particular classes are nested. Hope this would explain this better. I. — panza
– panza, Commented Sep 25, 2012 at 18:38
just as a side note, you shouldn't have your h4 placed within a UL element.. I get that it's a random example however. — Pebbl
– Pebbl, Commented Sep 29, 2012 at 17:13
@pebbl, I do agree with you. I was not the one who wrote it... — panza
– panza, Commented Oct 5, 2012 at 14:43

seangates · Accepted Answer · 2012-09-26 04:56:08Z

1

If you want jQuery to find other elements using the same ClassName then you need to add them to your selector, like so:

$(document).ready(function() {
    $('h2.ClassName, h4.ClassName, li.ClassName').each(function(index, DOMElement){
        if(/[\uE000-\uF8FF]+/.test($(DOMElement).text())) {
            $(this).removeClass('ClassName').addClass('CSS-ClassName');
        }
    }) 
});

If you want to get really generic, and change all elements with ClassName then you would change the selector to:

/* ... */
$('.ClassName').each(); /* ... you get the idea ... */
/* ... */

Hope that helps.

answered Sep 26, 2012 at 4:56

seangates

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5 Comments

panza Over a year ago

thanks for your reply. Unfortunately, my issue gets slightly more complicated when I have the following HTML elements: <div class="Class"> <ul> <li> <strong> Title: </strong> Text to detect </li> .... The above solution does not seem to work... Thanks, I.

seangates Over a year ago

Have you tried $(this).text() instead of $(DOMElement).text()? I don't think it's the problem, but worth a shot.

Pebbl Over a year ago

+1 Ilariac's answer seems to work from what I can see: jsfiddle.net/bzHxT/1 - when running in FireFox 16 Mac OSX I get each item ending up with a red border... which is what should be happening - at least in my example - should it not?

panza Over a year ago

Hi all, thanks for your help. Yes, it works in case <li> elements are associated to a class. Unfortunately, it does not in case those elements have no classes associated. See [this] (stackoverflow.com/questions/12641673/…) for more info. Thanks again for your replies! I.

Pebbl Over a year ago

@ilariac In that case then you just need to target the elements you require using their tagname instead. $('.ClassName li') for example. Or if you'd prefer you could target all elements within a .ClassName element using $('.ClassName *')

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