function isDate(str) { var reg = /^({1,4})(-|{1,2}){1,2})$/; result = str.match(reg); if(result == null)return false; var d = new Date(result[1],result[3]-1,result[4]) var newStr = d.getFullYear()+result[2]+(d.getMonth()+1)+result[2]+d.getDate(); return str == newStr } try { hdate=new Date(hyear,hmonth-1,day) } catch(e) { alert('错误'); } <script language="JavaScript"> String.prototype.IsDate=function() { var str=this; var reg =/^({1,2})-({1,2})$/; var r=str.match(reg); if(r==null)return false; r[2]=r[2]-1; var d=new Date(r[1],r[2],r[3]); if(d.getFullYear()!=r[1])return false; if(d.getMonth()!=r[2])return false; if(d.getDate()!=r[3])return false; return true; } </script>
<script> function isDate(str) { var reg = /^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/; result = str.match(reg); if(result == null)return false; var d = new Date(result[1],result[3]-1,result[4]) var newStr = d.getFullYear()+result[2]+(d.getMonth()+1)+result[2]+d.getDate(); return str == newStr } alert(isDate("2004-5-1")) alert(isDate("2004-5-32")) alert(isDate("2004-2-30")) </script>
DateTime aa =new DateTime(); try { aa =Convert.ToDateTime(this.textbox1.Text); } catch { this.label.Text="error"; return; }
2.自己写js判断.
3.用输入的日期来创建一个datatime对象,如果抛出异常就说明日期不正确.建议用1.
function isDate(str)
{
var reg = /^({1,4})(-|{1,2}){1,2})$/;
result = str.match(reg);
if(result == null)return false;
var d = new Date(result[1],result[3]-1,result[4])
var newStr = d.getFullYear()+result[2]+(d.getMonth()+1)+result[2]+d.getDate();
return str == newStr
}
try
{
hdate=new Date(hyear,hmonth-1,day)
}
catch(e)
{
alert('错误');
}
<script language="JavaScript">
String.prototype.IsDate=function()
{
var str=this;
var reg =/^({1,2})-({1,2})$/;
var r=str.match(reg);
if(r==null)return false;
r[2]=r[2]-1;
var d=new Date(r[1],r[2],r[3]);
if(d.getFullYear()!=r[1])return false;
if(d.getMonth()!=r[2])return false;
if(d.getDate()!=r[3])return false;
return true;
}
</script>
function isDate(str)
{
var reg = /^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/;
result = str.match(reg);
if(result == null)return false;
var d = new Date(result[1],result[3]-1,result[4])
var newStr = d.getFullYear()+result[2]+(d.getMonth()+1)+result[2]+d.getDate();
return str == newStr
}
alert(isDate("2004-5-1"))
alert(isDate("2004-5-32"))
alert(isDate("2004-2-30"))
</script>
try
{
aa =Convert.ToDateTime(this.textbox1.Text);
}
catch
{
this.label.Text="error";
return;
}