function validateDate(fld) {
if (!checkDate(fld)) {
// focus if validation fails
fld.focus( );
fld.select( );
}
}
function checkDate(fld) {
var mo, day, yr;
var entry = fld.value;
var re = /\b\d{1,2}[\/-]\d{1,2}[\/-]\d{4}\b/;
if (re.test(entry)) {
var delimChar = (entry.indexOf("/") != -1) ? "/" : "-";
var delim1 = entry.indexOf(delimChar);
var delim2 = entry.lastIndexOf(delimChar);
mo = parseInt(entry.substring(0, delim1), 10);
day = parseInt(entry.substring(delim1+1, delim2), 10);
yr = parseInt(entry.substring(delim2+1), 10);
var testDate = new Date(yr, mo-1, day);
alert(testDate)
if (testDate.getDate( ) == day) {
if (testDate.getMonth( ) + 1 == mo) {
if (testDate.getFullYear( ) == yr) {
return true;
} else {
alert("There is a problem with the year entry.");
}
} else {
alert("There is a problem with the month entry.");
}
} else {
alert("There is a problem with the date entry.");
}
} else {
alert("Incorrect date format. Enter as mm/dd/yyyy.");
}
return false;
}
楼主参考一下吧....用到了正则表达式..
if (!checkDate(fld)) {
// focus if validation fails
fld.focus( );
fld.select( );
}
}
function checkDate(fld) {
var mo, day, yr;
var entry = fld.value;
var re = /\b\d{1,2}[\/-]\d{1,2}[\/-]\d{4}\b/;
if (re.test(entry)) {
var delimChar = (entry.indexOf("/") != -1) ? "/" : "-";
var delim1 = entry.indexOf(delimChar);
var delim2 = entry.lastIndexOf(delimChar);
mo = parseInt(entry.substring(0, delim1), 10);
day = parseInt(entry.substring(delim1+1, delim2), 10);
yr = parseInt(entry.substring(delim2+1), 10);
var testDate = new Date(yr, mo-1, day);
alert(testDate)
if (testDate.getDate( ) == day) {
if (testDate.getMonth( ) + 1 == mo) {
if (testDate.getFullYear( ) == yr) {
return true;
} else {
alert("There is a problem with the year entry.");
}
} else {
alert("There is a problem with the month entry.");
}
} else {
alert("There is a problem with the date entry.");
}
} else {
alert("Incorrect date format. Enter as mm/dd/yyyy.");
}
return false;
}
楼主参考一下吧....用到了正则表达式..
String.prototype.isTime = function()
{
var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/);
if(r==null)return false; var d = new Date(r[1], r[3]-1,r[4],r[5],r[6],r[7]);
return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]&&d.getHours()==r[5]&&d.getMinutes()==r[6]&&d.getSeconds()==r[7]);
}
alert("2002-1-31 12:34:56".isTime());
alert("2001-2-29 12:54:56".isTime());
alert("2002-1-41 12:00:00".isTime());
</script>
能不能给个解释
{
var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);
if(r==null)return false; var d = new Date(r[1], r[3]-1,r[4]);
return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);
}
为什么我用
alert("2002-1-1".isTime);返回的是true
而我用
alert(document.getElementById('d').value.isTime());返回的却是false
其中<input id="d" type="text"></input>
{
var r = this.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);
if(r==null)return false; var d = new Date(r[1], r[3]-1,r[4]);
return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);
}function doClick1(){
alert(document.getElementById('d').value);
alert(document.getElementById('d').value.isTime());
}<br>
<input id="d" type="text"></input>
<input type="button" value="time" onclick="doClick1();">
可以的