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javascriptjquerydate
3gwebtrain
3gwebtrain

Reputation: 15299

How to test the Date, Month and Year entered as 2 Digits are valid?

In my form, a user can enter the date like this: 220875 (day, month, year).

Once they entered the details, I would like to test that the date is valid:

  1. Month is from 1 to 12 inclusive.
  2. The day entered is valid for the specified month.

How would I find out whether or not the values are correct and matching?

here is my attempt: (excerpt)

DateIsOk:function(value) { //220875 for example
        var formatValue = value.match(/.{1,2}/g), //splting as 22 08 75
         fieldDate = parseInt(formatValue[0]), //converting to num
         fieldMonth = parseInt(formatValue[1]),
         fieldYear = parseInt(formatValue[2]),
         dayobj = new Date();

        //test need to go here...
    }

If it helps, here is a Live Demo.

Upvotes: 1

Views: 1695

Answers (4)

IronGeek
IronGeek

Reputation: 4883

If you don't mind using momentjs as @hVostt suggested, you could try modifying your DateIsOk() validation function like this:

...
dateParts : ["years", "months", "days", "hours", "minutes", "seconds", "milliseconds"],
DateIsOk:function(value) {        
    var dayobj = moment(value, "DDMMYY");

    if (dayobj.isValid()) {
        this.errorHandler(true);
        return true;
    }
    else {
        this.errorHandler('Invalid ' + this.dateParts[dayobj.invalidAt()]);
        return false;
    }
}
...

Here's the updated Live Demo

Upvotes: 1

hVostt
hVostt

Reputation: 1681

Please try Moment.js and his validation functions:

http://momentjs.com/docs/#/parsing/is-valid/

moment([2014, 25, 35]).isValid();

moment("2014-25-35").isValid();

Upvotes: 0

Nicolas Henrard
Nicolas Henrard

Reputation: 843

It seems you use the DD/MM/YYYY format.

So you can easily use this ready-to-use code: http://www.qodo.co.uk/blog/javascript-checking-if-a-date-is-valid/

JavaScript

// Checks a string to see if it in a valid date format
// of (D)D/(M)M/(YY)YY and returns true/false
function isValidDate(s) {
    // format D(D)/M(M)/(YY)YY
    var dateFormat = /^\d{1,4}[\.|\/|-]\d{1,2}[\.|\/|-]\d{1,4}$/;

    if (dateFormat.test(s)) {
        // remove any leading zeros from date values
        s = s.replace(/0*(\d*)/gi,"$1");
        var dateArray = s.split(/[\.|\/|-]/);

        // correct month value
        dateArray[1] = dateArray[1]-1;

        // correct year value
        if (dateArray[2].length<4) {
            // correct year value
            dateArray[2] = (parseInt(dateArray[2]) < 50) ? 2000 + parseInt(dateArray[2]) : 1900 + parseInt(dateArray[2]);
        }

        var testDate = new Date(dateArray[2], dateArray[1], dateArray[0]);
        if (testDate.getDate()!=dateArray[0] || testDate.getMonth()!=dateArray[1] || testDate.getFullYear()!=dateArray[2]) {
            return false;
        } else {
            return true;
        }
    } else {
        return false;
    }
}

Upvotes: 1

Latpaw
Latpaw

Reputation: 121

The js regexp maybe like this
/([0-2][0-9]|3[01])(0[1-9]|1[0-2])(\d{2})/

Upvotes: 0

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