Function getElem

docs/lib.js:156–166

(elem)

// DOM

function getElem(elem) {
    if (document.getElementById) {
        if (typeof elem == "string") {
            elem = document.getElementById(elem);
            if (elem===null) throw 'cannot get element: element does not exist';
        } else if (typeof elem != "object") {
            throw 'cannot get element: invalid datatype';
        }
    } else throw 'cannot get element: unsupported DOM';
    return elem;
}

function hasClass(elem, className) {
    return getElem(elem).className.split(' ').has(className);