我有一個很奇怪的問題，函數(shù)封裝起來就出錯！
先貼代碼
<!DOCTYPE?html>
<html>
<head>
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<body>
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????????????<li?style="color:?red">床前明月光</li>
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????????????<li?style="color:?yellow">舉頭望明月</li>
????????????<li?style="color:?green">低頭思故鄉(xiāng)</li>
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<script>
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</body>
</html>注釋部分和沒有注釋部分的唯一區(qū)別就是將定時器中函數(shù)有無封裝，注釋中封裝成函數(shù)sceollUp就總會出錯，沒有注釋的部分也就是將函數(shù)直接寫進去，就可以正常運行，真的好奇怪，求大佬解惑
