课程
/前端开发
/HTML/CSS
/图片预加载
请教：count返回不正确，导致一开始进度加载不正常，
2018-02-27
源自：图片预加载 2-2
正在回答
正确，加油，希望课程对你有帮助。
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你的count是从哪传过来的？
举报
预知发生的行为，提前加载需要的图片，获得更好的用户体验
2 回答为什么是count>=len-1，加载完成，而不是count>=len呢？不太明白
2 回答这里的count怎么运行自增操作的，经过if else 语句不都绕过了count++吗
2 回答count++位置是否有误？
3 回答count已经在插件里物化了，但调用时还是提示count is not defined
1 回答count++的位置没有问题哦
