c.htm
-------------------------
<script language="javascript" src="b.js"></script>
b.js
----------------------------
document.write("<script language='javascript' src='a.js'></script>");a.js
-----------------------------
alert("hello world");
-------------------------
<script language="javascript" src="b.js"></script>
b.js
----------------------------
document.write("<script language='javascript' src='a.js'></script>");a.js
-----------------------------
alert("hello world");
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