How to validate date for MM/YY in javascript?

Question

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Formatting a date in JavaScript

I have a form having lots of fields and all are validate through Java-script and one of them is for date.

<td>Credit Card Expiration Date</td><td>:<input class="input" type="text" name="CC_expiration_date" id="CC_expiration_date"><p>(MM/YY)</p></td>

Now I want that the user must enter the date in (MM/YY) format. How could I validate this using JavaScript?

I tried to make a regular expression:

/^(\d{2})[-\/](\d{2})[-\/](\d{4})$/.exec(date);

... but didnt work.

i tried to make a regular expression /^(\d{2})[-\/](\d{2})[-\/](\d{4})$/.exec(date); but didnt work. — Harshal, Sep 11 '12 at 10:40

score 4 · Answer 1 · answered Sep 11 '12 at 10:41

4

You could use a regular expression;

var s = "11/12";
/^(0[1-9]|1[0-2])\/\d{2}$/.test(s);

The first part, (0[1-9]|1[0-2]), validates the month part, i.e., that the value is in the range 01-12. The second part, \d{2} validates the two-digit year.

answered Sep 11 '12 at 10:41

João Silva

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it gives error msg while i entering the valid date 12/12 – Harshal Sep 11 '12 at 11:28
Are you sure the string is exactly `12/12`. Try `/^(0[1-9]|1[0-2])\/\d{2}$/.test("12/12")`. It returns `true`. – João Silva Sep 11 '12 at 11:31
still not working ,not giving any error on ri8 or wrong value. – Harshal Sep 11 '12 at 11:44

Vinay · Accepted Answer · 2012-09-11T12:26:05.383

4

Try this simple function.

function validDate(dValue) {
  var result = false;
  dValue = dValue.split('/');
  var pattern = /^\d{2}$/;

  if (dValue[0] < 1 || dValue[0] > 12)
      result = true;

  if (!pattern.test(dValue[0]) || !pattern.test(dValue[1]))
      result = true;

  if (dValue[2])
      result = true;

  if (result) alert("Please enter a valid date in MM/YY format.");
}

edited Sep 11 '12 at 12:26

answered Sep 11 '12 at 10:57

Vinay

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@viany ,can you please change the regular expression coz it doesn't give error if i type 12/12/2012 – Harshal Sep 11 '12 at 11:25
@HarshalMahajan As your question says you want to validate only MM/YY format. if you want to validate it for DD/MM/YYYY, you can use same answer with some formating. – Vinay Sep 11 '12 at 11:56
actually i want that the user should enter the date like 12/12 not like 12/12/2012,and if he does than there should error MSG.you answer works fine for 12/12 but it doesn't validate for 12/12/2012 – Harshal Sep 11 '12 at 11:58
@HarshalMahajan Ok. updated accordingly. – Vinay Sep 11 '12 at 12:26

score 0 · Answer 3 · edited May 23 '17 at 10:27

0

Try this..

For DD-MM-YYYY ==> var dateReg = /^\d{2}[./-]\d{2}[./-]\d{4}$/

For MM-YY ==> var dateReg = /^\d{2}[./-]\d{2}$/

Know about regex.. http://docs.oracle.com/javase/tutorial/essential/regex/char_classes.html

More Details Click Here

edited May 23 '17 at 10:27

Community

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answered Sep 11 '12 at 10:47

Basith

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it wont validate if month is greater than 12. fix it. – Vinay Sep 11 '12 at 11:12

score 0 · Answer 4 · answered Sep 11 '12 at 11:20

0

var d = "09/11"
var pattern = /^(0[1-9]|1[012])\/\d{2}$/
pattern.test(d)

answered Sep 11 '12 at 11:20

Clyde Lobo

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it gives error msg while i entering the valid date 12/12 – Harshal Sep 11 '12 at 11:27
It works http://jsfiddle.net/TqwVb/ – Clyde Lobo Sep 11 '12 at 13:00

How to validate date for MM/YY in javascript?

4 Answers4