JSFiddle - React, Tailwind, and code Playground

by oduska

HTML

<div class="thing">
    <div class="entry">
        <p class="tagline">submitted <time title="Wed May 11 11:18:46 2016 UTC" datetime="2016-05-11T11:18:46+00:00" class="live-timestamp">4 hours ago</time> by <a href="https://www.reddit.com/user/ohohpopo" class="author may-blank id-t2_qz9er userTagged">ohohpopo</a><span class="RESUserTag"><a class="userTagLink RESUserTagImage" username="ohohpopo" title="set a tag" href="javascript:void 0"></a></span> <a href="#" class="voteWeight" style="display: none;">[vw]</a><span class="userattrs"></span> to <a href="https://www.reddit.com/r/The_Donald/" class="subreddit hover may-blank">/r/HillaryForPresident</a></p>
        
        <ul class="flat-list buttons">
            <li>
                <form class="hide-button">
                    <a href="#">Hide</a>
                </form>
            </li>
        </ul>
    </div>
</div>

<div class="thing">
    <div class="entry">
        <p class="tagline">submitted <time title="Wed May 11 11:18:46 2016 UTC" datetime="2016-05-11T11:18:46+00:00" class="live-timestamp">4 hours ago</time> by <a href="https://www.reddit.com/user/ohohpopo" class="author may-blank id-t2_qz9er userTagged">ohohpopo</a><span class="RESUserTag"><a class="userTagLink RESUserTagImage" username="ohohpopo" title="set a tag" href="javascript:void 0"></a></span> <a href="#" class="voteWeight" style="display: none;">[vw]</a><span class="userattrs"></span> to <a href="https://www.reddit.com/r/The_Donald/" class="subreddit hover may-blank">/r/leagueoflegends</a></p>
        
        <ul class="flat-list buttons">
            <li>
                <form class="hide-button">
                    <a href="#">Hide</a>
                </form>
            </li>
        </ul>
    </div>
</div>

<div class="thing">
    <div class="entry">
        <p class="tagline">submitted <time title="Wed May 11 11:18:46 2016 UTC" datetime="2016-05-11T11:18:46+00:00" class="live-timestamp">4 hours ago</time> by <a...

CSS

.red {
    background-color: red;
}

JavaScript

$(function() {
    var subredditLink = $('.subreddit');
    
    var annoyingSubreddits = [
        '/r/The_Donald',
        '/r/SandersForPresident',
        '/r/leagueoflegends',
        '/r/politics'
    ];
    
    $(subredditLink).each(function() {
    		var match = $.inArray($(this).text(), annoyingSubreddits);
        
        if (match !== -1){
        		$(this).closest('.thing').find('.hide-button a').addClass('red');
        }
    });
});