我尝试使用以下代码验证日期: -
function d(id){
var n= document.getElementById(id);
var re=/^(?:(0[1-9]|1[012])[\- \/.](0[1-9]|[12][0-9]|3[01])[\- \/.](19|20)[0-9]{2})$/;
if (re.test(n.value))
{
n.style.backgroundColor="#52F40C";
}
else
{
window.alert("Invalid date");
n.style.backgroundColor="#F40C0C";
n.focus();
n.value="";
}
}
但它不起作用。这段代码有什么问题?
答案 0 :(得分:1)
试试这个
function isValidDate(subject){
if (subject.match(/^(?:(0[1-9]|1[012])[\- \/.](0[1-9]|[12][0-9]|3[01])[\- \/.](19|20)[0-9]{2})$/)){
return true;
}else{
return false;
}
}
答案 1 :(得分:-1)
尝试使用此功能
function isDate(txtDate, separator) {
var aoDate, // needed for creating array and object
ms, // date in milliseconds
month, day, year; // (integer) month, day and year
// if separator is not defined then set '/'
if (separator === undefined) {
separator = '/';
}
// split input date to month, day and year
aoDate = txtDate.split(separator);
// array length should be exactly 3 (no more no less)
if (aoDate.length !== 3) {
return false;
}
// define month, day and year from array (expected format is m/d/yyyy)
// subtraction will cast variables to integer implicitly
month = aoDate[0] - 1; // because months in JS start from 0
day = aoDate[1] - 0;
year = aoDate[2] - 0;
// test year range
if (year < 1000 || year > 3000) {
return false;
}
// convert input date to milliseconds
ms = (new Date(year, month, day)).getTime();
// initialize Date() object from milliseconds (reuse aoDate variable)
aoDate = new Date();
aoDate.setTime(ms);
// compare input date and parts from Date() object
// if difference exists then input date is not valid
if (aoDate.getFullYear() !== year ||
aoDate.getMonth() !== month ||
aoDate.getDate() !== day) {
return false;
}
// date is OK, return true
return true;
}