js防抖函数

        /**
         * 防抖函数
         * @param {fun,duration} 执行函数，时间
         * @return {fun}  返回一个回调函数;
         */
        function debounce(fun, duration) {
          let timer = null;
          return function () {
            // 清除定时器
            if (timer) clearTimeout(timer);
            let args = Array.prototype.slice.call(arguments);
            timer = setTimeout(() => {
              fun.apply(this, args);
            }, duration);
          };
        }
        let a = "a";
        let b = "b";
        let c = "c";
        let d = "d";
        // 传入多个参数
        let myFunction = debounce((...reslute) => {
          console.log(reslute);
        }, 1000);
        myFunction(a, b, c, d);