< html > < body > < form name = "FRM1" > Enter name < input type = "text" name = "t1" >< br >< br > Enter Address < br > < textarea name = "t2" placeholder = "PERMANENT ADDRESS" ></ textarea >< br >< br > Enter Telephone Number < input type = "tel" name = "t3" maxlength = "10" >< br >< br > Enter Email Address < input type = "email" name = "t4" pattern = "[A-Z a-z]{5}-[@]{1}-[.]{1}" placeholder = "deeshank37@gmail.com" >< br >< br > < input type = "button" name = "b1" value = "Submit" onClick = "chk()" > </ form > < script type = "text/javascript" > ...