JS——每次调用从数组里面随机取一个数，且不能与上一次为同一个

const arr = [1, 2, 3, 4, 5];
      let ranArr = [];
      const randomchoice = function factory(arr) {
        let rnd = Math.floor(Math.random() * arr.length);
        if (ranArr.includes(rnd)) return factory(arr);
        ranArr.push(rnd);
        return arr[rnd];
      };

      console.log(randomchoice(arr));
      console.log(randomchoice(arr));
      console.log(randomchoice(arr));
      console.log(randomchoice(arr));
      console.log(randomchoice(arr));