regular expression for date and time diffrent ways - regex

Question

I am learning regular expression so I did some example. For example I want to validate date dd/mm/yyyy hh:mm:ss or dd-mm-yyy hh:mm:ss
I did like this on https://regex101.com:
([0-9]{2}+[-\/]+[0-9]{2}+[-\/]+[0-9]{4})\s([0-9]{2}+:+[0-9]{2}+:+[0-9]{2})
(\d{2}+[-\/]+\d{2}+[-\/]+\d{4})\s(\d{2}+:+\d{2}+:+\d{2})
Is there any other way to do it so regex can be short? Or it is perfect, I am sure it is not 100% perfect.
i want to add range for example month should not be greater than 12 , in time it should not be grater that 60.

Answer 1

Here is a date validator that I created for this, I think it could be fixed a little but it is working
test()
function dateChecker(re, dOrder, s) {
var validity = {
pass: false,
testString: s
}
s.replace(re, function(full, date, seperator, time) {
var y, m, d, h, min, s, p;
date = date.split(seperator).map(Number);
date[1] --;
time = time ? time.split(':').map(Number) : [0, 0, 0];
p = new Date(
y = date[dOrder.y],
m = date[dOrder.m],
d = date[dOrder.d],
h = time[0],
min = time[1],
s = time[2]);
if (p.getDate() === d &&
p.getMonth() === m &&
p.getFullYear() === y &&
p.getHours() === h &&
p.getMinutes() === min &&
p.getSeconds() === s)
validity.pass = true;
else
validity.failReason = [p, "doesn't match", date, time].join(' ')
});
return validity
}
function dValidator(s) {
return dateChecker(/^((?:\d\d([-\/])){2}\d{4})(?:\s+((?:\d\d:){2}\d\d))?$/, {
d: 0,
m: 1,
y: 2
}, s)
}
function test() {
var failedTests = [],
failData = ["33/09/2064", "31/2/1980"],
sucessData = ["14-03-1904 04:35:17", "29/2/1980"];
failData.map(dValidator).map(function(a, i) {
return a.pass ? failedTests.push([a, i, 'expected to fail but it incorrectly passed']) : console.log('test passed ok', a, i)
})
sucessData.map(dValidator).map(function(a, i) {
return a.pass ? console.log('test passed ok', a, i) : failedTests.push([a, i, 'expected to pass but it has incorrectly failed'])
})
if (failedTests.length) {
console.log(failedTests);
return 'fail'
}
return 'pass'
}

Answer 2

You are using too much +, and you could repeat some groups :
(\d{2}[-\/]){2}\d{4}\s\d{2}(:\d{2}){2}

Answer 3

I found for date m/d/yy or m/d/yyyy or mm/dd/yy or mm/dd/yy
^((0?[13578]|10|12)(-|\/)(([1-9])|(0[1-9])|([12])([0-9]?)|(3[01]?))(-|\/)((19)([2-9])(\d{1})|(20)([01])(\d{1})|([8901])(\d{1}))|(0?[2469]|11)(-|\/)(([1-9])|(0[1-9])|([12])([0-9]?)|(3[0]?))(-|\/)((19)([2-9])(\d{1})|(20)([01])(\d{1})|([8901])(\d{1})))$