javascript - 使用wheel事件调用在数组中选择新变量的函数

小跑方式（每150毫秒拨打一次）

var controller = document.querySelector(".main");
var apple = document.querySelector(".box");
var orange = document.querySelector(".box1");
var papaya = document.querySelector(".box2");
var guava = document.querySelector(".box3");
var boxes = [apple,orange,papaya,guava];

controller.addEventListener('wheel', throttle(damnIt, 150));

function damnIt() {
  console.log ("hey");

    //my function for array selection goes here
}

function throttle(cb, timeout) {
  // You can rewrite this function by replacing the time limit with the
  // scroll pitch. I think that would be the best solution.
  // let delta = e.deltaY || e.detail || e.wheelDelta;
  // ... sum delta and call callback by the number of steps: accumulator/step

  let lastCall = 0;

  return function() {
    if (new Date() - lastCall > timeout) {
      lastCall = new Date();

      cb();
    }
  }
}