I expected the code below to alert "0" and "1", but it alert "2" twice. I don't understand the reason. Don't know if it is a problem of jQuery. Also, please help me to edit title and tags of this post if they are inaccurate.I expected the code below to alert "0" and "1",
阅读背景：
JavaScript回调函数中的变量范围
来源：互联网
分享到：
