We might have a dozen or so data-* attributes attached to different DOM elements. You'll be surprised how much easier your life will be.
var versions = $('.Revision') .filter('[data-project-id="' + projectId + '"]');
var versions = $('.Revision').dfilter('project-id', projectId);
You can even opt to only check against existence of a non-blank data-* attribute:
var versions = $('.Revision').dfilter('project-id'); var sameVersions = $('.Revision').dfilter('project-id', true);
Or, give it an array!
var versions = $('.Revision').dfilter('project-id', [100, 101]);
You can also filter using true and false. A value of true filters elements with that data attribute, even if the attribute is blank. A value of false will select all things without that data attribute:
// Selects all revisions without a project-id var versions = $('.Revision').dfilter('project-id', false);
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