Age restriction using Javascript -


i new javascript absolutely little idea language. trying put age restriction in job application form date of birth text field, date format dd/mm/yyyy , applicants must @ between 15 , 80 years old @ time fill in form otherwise won't able apply. not want embed html file write in .js file only.

for dob input type text, name dob, id dob, pattern (0[1-9]|1[0-9]|2[0-9]|3[01])/(0[1-9]|1[012])/[0-9]{4}

thank you.

you can use min , max attributes of html5 input date

html:

    <input type="date" id="txtdate" />

javascript : 

        var dttoday = new date();         var month = dttoday.getmonth() + 1;         var day = dttoday.getdate();         var year = dttoday.getfullyear();         var maxyear = year - 18;         if(month < 10)             month = '0' + month.tostring();         if(day < 10)             day = '0' + day.tostring();          var maxdate = maxyear + '-' + month + '-' + day;         var minyear = year - 80;         var mindate = minyear + '-' + month + '-' + day;         alert(maxdate);         document.queryselectorall("#txtdate")[0].setattribute("max",maxdate);          document.queryselectorall("#txtdate")[0].setattribute("min",mindate);

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