预加载图片

[Silence-dream]

    // 预加载图片
      let count = 0;
      let imgs = [].concat(homeSrcList, protagonistList);
      for (let img of imgs) {
        let image = new Image();
        image.src = img;
        image.onload = () => {
          count++;
          if (count === imgs.length - 1) {
            console.log("图片加载完成");
          }
        };
      }