验证日期格式
<HTML> <HEAD> <meta name=vs_targetSchema content="HTML 4.0"> <meta name=vs_defaultClientScript content="JavaScript"> <script language="javascript"> function check(){ var a=/^[1-2]\d{3}-(0?[1-9]|1[0-2])-(0?[1-9]|[12][0-9]|3[0-1])$/ ; if (!document.getElementById("test").value.match(a) ){ alert("日期格式不正确!") return false } else return true } </script></HEAD> <BODY> <form name="form1" id="form1"> <input id="test" type=text name="test" onblur="return check();"/></form> </BODY> </HTML>