Is object empty? [duplicate]

Answer 1

var hasOwnProperty = Object.prototype.hasOwnProperty;
function isArray(a) {
    return Object.prototype.toString.call(a) === '[object Array]'
}
function isObject(a) {
    return Object.prototype.toString.call(a) === '[object Object]'
}
function isEmpty(a) {
    if (null == a || "" == a)return!0;
    if ("number" == typeof a || "string" == typeof a)return!1;
    var b = !0;
    if (isArray(a)) {
        if (!a.length)return!0;
        for (var c = 0; c < a.length; c++)isEmpty(a[c]) || (b = !1);
        return b
    }
    if (isObject(a)) {
        for (var d in a)hasOwnProperty.call(a, d) && (isEmpty(a[d]) || (b = !1));
        return b
    }
    return!0
}