CODEWITHSUNDEEP
javascriptvalidationdatetimedate-formatting
JaiK
JaiK

Reputation: 377

Need to validate dd/mm/yy hh:mmtt in Javascript

I am trying this to validate the date.However I am not too sure about what is wrong with this.

Note- I my application there is no space between mm(minuted) and AM/PM.

var date = '21/01/13 6:40AM';

var myRegex = /0?[0-31]\d\/0?[0-12]\d\/\d{2} [0-11]\d:[0-59]\d[AP][M]/; 


if (myRegex.test(date)){
// Ok to proceed

}

I tried the following by breaking the date and time separately i.e the following combination

var date = '21/01/13'

var myRegex = /0?[0-31]\d\/0?[0-12]\d\/d{2}/;

However for the time part i.e 6:40AM.I am not able to validate it with

var myRegex = /[0-11]\d:[0-59]\d[AP][M]/;

Could you please help me out.

Upvotes: 1

Views: 168

Answers (4)

RobG
RobG

Reputation: 147403

One way to validate date and time strings is to create a date object and see if the parts match, e.g. 

function validateDateString(s) {
    var b = s.split(/[\/ :]/g);
    var ap = s.substring(-2).toLowerCase();
    var h = parseInt(b[3], 10) + (ap == 'am'? 0 : 12);
    var min = parseInt(b[4],0);
    var y = +b[2] + (b[2] < 50? 2000 : 1900);
    var d = new Date(y, --b[1], b[0], h, min, 0, 0);
    var apValid = /am|pm/.test(ap);

    // Only need to test two parts of date and hours
    return d.getMonth() == b[1] && d.getDate() == b[0] && d.getHours() == h && apValid;
}

console.log(validateDateString('21/01/13 6:40AM')); // true

You could use a regular expression too, and if ES5 compliant browsers are all you need to support you could reformat the string as an ISO 8601 compliant string a pass it to Date.parse. But that won't work in many browsers in use.

Upvotes: 0

Senthilmurugan
Senthilmurugan

Reputation: 383

Try This :

var regex = /^([0-11]\d):([0-59]\d)\s?(?:AM|PM)?$/i;

Will work for : "06:40am"

Upvotes: 1

Md. Tazbir Ur Rahman Bhuiyan
Md. Tazbir Ur Rahman Bhuiyan

Reputation: 2032

Try This One. Leap year supported. example: http://jsfiddle.net/Vk268/

 ^(((0[1-9]|[12]\d|3[01])\/(0[13578]|1[02])\/((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)\/(0[13456789]|1[012])\/((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$

Upvotes: 1

Ergec
Ergec

Reputation: 11824

I suggest you to check actual validity not just syntax. check this post which uses datejs

Jquery DateJs, is there validation for full date?

Upvotes: 0

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