Filter divs by data-attr containing string

Question

How to filter a number of divs based on what they have in their custom data attribute using jQuery? The problem is that the attribute can have more than 1 value

Answer 1

Try

function filter(e) {
    var regex = new RegExp('\\b' + e + '\\b');
    $('.size').hide()
        .filter(function () {
        return regex.test($(this).data('size'))
    }).show();
}

Demo: Fiddle