Function cssAddClass

test/lib/testHelper.js:2520–2524

(el, className)

    }

    function cssAddClass(el, className) {
        if (!cssHasClass(el, className)) {
            el.className = cssNormalizeClass(el.className + ' ' + className);
        }
    }

    function cssRemoveClass(el, className) {
        var classes = (' ' + el.className + ' ').replace(' ' + className + ' ', function () {