防抖和节流

对于更多日常应用的公共类的操作方法，能够关注下小滑轮网站 http://www.feiaci.com/#/self/…

/**
 * @name 防抖
 * @param {function} [fn=v=>v] 函数
 * @param {number} [dura=50] 时延
 */
function Debounce(fn = v => v, dura = 50) {
    let timer = null;
    return function(...args) {
        timer && clearTimeout(timer);
        timer = setTimeout(() => fn.apply(this, args), dura);
    };
}

/**
 * @name 节流
 * @param {function} [fn=v=>v] 函数
 * @param {number} [dura=50] 时延
 */
function Throttle(fn = v => v, dura = 50) {
    let pass = 0;
    return function(...args) {
        const now = +new Date();
        if (now - pass > dura) {
            pass = now;
            fn.apply(this, args);
        }
    };
}