多张图图片随机展示，且在第一轮随机中每个图片都能展示出来

使用闭包实现YYDS
export function RandomMascot() {
  const imgList = ['1', '2', '3'];
  let newList = imgList.slice(0);
  const imgUrl = function () {
    let data;
    if (newList.length === 1) {
      data = newList[0];
      newList = [];
    } else {
      data = newList[Math.floor(Math.random() * newList.length)];
      newList.splice(
        newList.findIndex((item) => item === data),
        1
      );
    }
    if (!newList.length) {
      newList = imgList.slice(0);
    }
    console.log(newList, '==newList==', data);
    if (data) {
      return data;
    } else {
      imgUrl();
    }
  };
  return imgUrl;
}
export const randomMascot = RandomMascot();

标签：const,展示,newList,imgList,length,随机,data,imgUrl,图片
来源： https://www.cnblogs.com/lvlvlv/p/16023546.html