

<html>
<body>

<form method="post" action="demo_aspnet_regularexpvalidator.aspx" id="ctl00">
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUJMzYzMzcxMjUyZGRfh+i8+K+XO41Uk5FoGwgnRVTzRKDQE1QcH0Hynd4/MA==" />

<input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="C33B0B7E" />
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEdAAMHFl/sCvDYL4SNS/1fMcjqdHSgD/6nSHV+q1vNJcfJ//FOuDuz94bvRQgA6h3c7GpQhYfXnIdF/VgdRs7uvosofnweGyWS4JRwuxC3TvlUyA==" />
请输入 US 邮政编码：
<input name="txtbox1" type="text" id="txtbox1" />
<br /><br />
<input type="submit" name="ctl01" value="提交" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;ctl01&quot;, &quot;&quot;, true, &quot;&quot;, &quot;&quot;, false, false))" />
<br /><br />
<span id="lbl"></span>
<br />
&nbsp;
</form>

</body>
</html>