JS:怎么运行代码中有"?"? runcode函数: function runCode(obj) {         var winname = window.open('', "_blank", '');         winname.document.open('text/html', 'replace');         winname.document.writeln(obj.value);         winname.document.close(); } 当需要运行的代码中还有&nbsp;时,runCode()后再查看源代码发现&nbsp;已变成问号,请问怎么解决? 例如需要运行的代码: &lt;table width=&quot;100%&quot; border=&quot;1&quot; cellspacing=&quot;0&quot; cellpadding=&quot;2&quot; id=&quot;PowerTable&quot;&gt;<br /> &lt;tr align=&quot;center&quot; bgcolor=&quot;#FFCC00&quot;&gt;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;First Name&lt;/td&gt;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;Last Name&lt;/td&gt;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;Team&lt;/td&gt;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;Engine&lt;/td&gt;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;Tyres&lt;/td&gt;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;Fastest Lap&lt;/td&gt;<br /> &nbsp; &nbsp; &nbsp; &nbsp; &lt;td&gt;国家&lt;/td&gt;<br /> &lt;/tr&gt;<br /> &lt;/table&gt;<br />

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