下面的例子返回了表格行的 inner HTML：
<html><head><script type="text/javascript">function getInnerHTML() { alert(document.getElementById("tr1").innerHTML); }</script></head><body><table border="1"><tr id="tr1"><th>Firstname</th><th>Lastname</th></tr><tr id="tr2"><td>Peter</td><td>Griffin</td></tr></table><br /><input type="button" onclick="getInnerHTML()" value="Alert innerHTML of table row" /></body></html>
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