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以前寫js的時候都是<script type="text/javascript" src="…" ></script>，這兩天無意中改寫成了空節點 <script type="text/javascript" src="…" />。調試的時候js怎麼也不工作，網上也沒有這方面的錯誤資訊。
比對了下代碼，發現是使用不符合xhtml規範的空節點<script />的原因。
一般建立文檔都有聲明為xhtml規範：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
而<script />空標記是不符合xhtml文檔規範的。空標籤有<hr /> <br /> 和 <img /> 具體標準可以參看w3school的標準文檔。
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