SO - 22115891

by Arun P Johny

HTML

<div class="demo1">example text</div>

CSS

.demo1 {
    color: green;
}
.demo2 {
    color: blue;
}

JavaScript

jQuery(function () {
    var $div = $('.demo1');
    setInterval(function () {
        $div.toggleClass('demo1 demo2');
    }, 1000);
})