<html><head><title>test</title><script language="javascript">function emailCheck () {var emailStr=document.all.form1.tel.value;alert(emailStr);var emailPat=/^(.+)@(.+)$/;var matchArray=emailStr.match(emailPat);if (matchArray==null) { alert("电子邮件地址必须包括 ( @ 和 . )") return false;}return true;}</script></head>
<body><form name="form1"><input type="text" name="tel"/><input type="button" value="press" onclick="emailCheck()"/></form>
</span></body></html>
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