select numbered class names

HTML

<h1>Test for selecting numbered class names</h1>
<p>Let's see...</p>

CSS

[class*="my-class-"] {
    color: red;
}

JavaScript

jQuery(document).ready(function ($) {
    var i;
    
    for (i = 1; i < 100; i++) {
        
        $("body").append(
            '<p class="my-class-'
            +i
            +'">This is p[class="my-class-'
            +i
            +']"</p>'
        );
    }
});