Question

Doing some code in JavaScript/jQuery and I need to have it where the user can enter a somewhat partial date string and have JavaScript figure out the full date.

For example, if the user enters “5/24” it should return “5/24/2011” (the current year). If the user enters “5/24/2004” it should return just that.

duedate = Date.parse(qadueparse);
duedatelit = new Date(duedate);
duedatelit = Number(duedatelit.getMonth()+1) + '/' + 
    Number(duedatelit.getDate()) + '/' + Number(duedatelit.getFullYear());

This above code works when the user supplies a full string, however it seems to screw up on me when the user types “5/24” or some other partial string. It returns a year of 2001.

Can anyone help me out?

Turning once again to StackOverflow for my programming needs; thank you, everyone, in this vibrant community for supporting each other.

Answer 1

The date object can accept a deconstructed date for instantiation:

var d = new Date(2011, 7, 13, 15, 59, 0); // Jul 13th, 3:59:00pm

You can rip apart the partial date and fill in the blanks yourself. However, what is 3/7? March 7th? July 3rd? Worse yet, 3/5/7 – which is year, which is month, which is day?

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comment followup:

If it’s always m/d, then you just split on the /, giving you m and d values.

provided = '5/24';
parts = provided.split('/');

month = parts[0]; // 5
day = parts[1]; // 24

today = new Date();

your_date = new Date(today.getFullYear(), month, day); // new date object for 2011/5/24