验证日期格式

示例： Validator.js文件内

var Validator=new Object();
//验证日期有效性
Validator.isValidDate=function(sText) {
//2008-08-08

var re=/(?:19|20/d{2})-(?:0[0-9]|1[0-2]){2}-(?:0[0-9]|[12][0-9]|3[0-1]){2}/;

return re.test(sText);

}

 

validDate.html文件内：

<SCRIPT src="Validator.js"></Script><style type="text/css">

.style1{display:none;color:red }</style><SCRIPT LANGUAGE="JavaScript">
<!--

function isValidDate()
{

var sText=document.getElementById("birthday").value;
var b=Validator.isValidDate(sText);
if(!b)
{
  var ospan= document.getElementById("datemsg");
  ospan.style.display="block";
  ospan.innerHTML="日期格式无效";
}
}
//-->
</SCRIPT>
<form action="validDate.html" method="post">
    出生日期：<input onclick="isValidDate();" name="birthday" /><span class="style1" id="datemsg"></span><br /><br /><input type="submit" onsubmit="" value="提交" />
</form>