Question

99

Age from Date of Birth using JQuery

rated 0 times [ 101] [ 2] / answers: 1 / hits: 53189 / 16 Years ago, wed, march 18, 2009, 12:00:00

I need to calculate if someone is over 18 from their date of birth using JQuery.

var curr = new Date();

curr.setFullYear(curr.getFullYear() - 18);



var dob = Date.parse($(this).text());



if((curr-dob)<0)

{

    $(this).text(Under 18);

}

else

{

    $(this).text( Over 18);

}

There must be some easier functions to use to compare dates rather than using the setFullYear and getFullYear methods.

Note: My actual reason for wanting to find a new method is length of the code. I have to fit this code into a database field that is limited to 250 chars. Changing the database is not something that can happen quickly or easily.

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cristinadomoniquel

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answered 16 Years ago yvettel · Accepted Answer

You might find the open source Datejs library to be helpful. Specifically the the addYears function.

var dob = Date.parse($(this).text());

if (dob.addYears(18) < Date.today())

{

    $(this).text(Under 18);

}

else

{

    $(this).text( Over 18);

}

In a more terse fashion:

$(this).text(

    Date.parse($(this).text()).addYears(18) < Date.today() ?

    Under 18 :

     Over 18

)