html - How to compare two dates in yy-dd-mm format in JavaScript? -

i have form element of date type:

<input type="date" class="form-control" name="inputdob" id="dob"    placeholder="dob" onblur="datevalidate()" required> 

the javascript code here:

function datevalidate(){     var date=new date();     var pass1 = document.getelementbyid("dob");     alert(pass1.value);     var date = new date();      today=date.getfullyear()+'-'+(date.getmonth() + 1)+'-'+date.getdate();        if(pass1.value<today){       alert("date correct ");     } } 

you don't need today, change if

if(new date(pass1.value)< date){  alert("date correct "); }  //or  if(new date(pass1.value)< new date()){  alert("date correct "); }