how to get past 15 years date validation with cur date using javascript

In C#, use the AddYears method to subtract a specific number of years from the current date and time instance. For e.g.

DateTime newDate = DateTime.Now.AddYears(-15);

Javascript = try this -

var myDate = new Date();
myDate.setFullYear (myDate.getFullYear() - 15);

This[^] could give you more ideas.