为什么这段代码会出错？

Question

$("#main").animate({ 
display: "block",
width: "70%",
opacity: 0.4,
marginLeft: "0.6in",
fontSize: "3em", 
borderWidth: "10px"
} 1500);

这是jQuery。我在争论列表“消息后得到了”缺失。怎么了？

Answer 1

UMM

} 1500);

在1500之前缺少逗号

我建议将来使用http://www.jslint.com/吗？如果您粘贴在那里的代码块中，您将收到以下错误：

Error:
Problem at line 8 character 3: Expected ')' and instead saw '1500'.

} 1500);

Problem at line 8 character 7: Missing semicolon.

} 1500);

Problem at line 8 character 7: Expected an identifier and instead saw ')'.

} 1500);

Problem at line 8 character 7: Stopping, unable to continue. (100% scanned).

Implied global: $ 1

之后，很容易看出你的错误必须在第8行。

Answer 2

您需要在结尾的持续时间之前使用逗号（目前为} 1500);），如下所示：

$("#main").animate({ 
display: "block",
width: "70%",
opacity: 0.4,
marginLeft: "0.6in",
fontSize: "3em", 
borderWidth: "10px"
}, 1500);

Answer 3

$("#main").animate({ 
display: "block",
width: "70%",
opacity: 0.4,
marginLeft: "0.6in",
fontSize: "3em", 
borderWidth: "10px"
}, 1500); // you have forgotten the comma here...