jquery - validate date and check if it fulfills certain criteria -

i trying validate date using jquery validator plugin, unable

what trying is: let user choose date datepicker in input field , verify between 18 65 years , if yes, continue submit..

i able regex range limit 16 65. how can achieve above results, troubling me..

here code:

<div class="col-md-6">             <label>age</label>             <div class="input-group input-group-sm date datepicker" data-date="" data-date-format="dd/mm/yyyy">                 <span class="input-group-addon"><i class="fa fa-calendar"></i></span>                 <input type="text" value="" readonly="readonly" class="form-control" name="age" id="age"/>                             </div>         </div>         </div> 

the js code

$("#cmxform").validate({         rules: {             age: {                 regex: /^(?:1[6-9]|[2-5]\d|6[0-5])$/             }         },         messages: {             age: {                 regex : "provide age, must atleast 18 years old qualify."             }         },         errorplacement: function(error, element) {              element.attr('title', error.addclass('error').text());              element.attr('placeholder', error.addclass('error').text());          }     }); 

try regular expression

regex: /^(?:1[8-9]|[2-5]\d|6[0-5])$/