第一段代碼<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>引用JS文件</title><script src="js.js"></script></head><body></body></html>第二段代碼<!DOCTYPE HTML><html>?<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>熱身</title><script scr="js.js"></script></head><body>? <p id="p1">我是第一段文字</p>? <p id="p2">我是第二段文字</p></body>
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