function idCard(){
  var firstName=document.getElementById("firstName").value;
  var lastName=document.getElementById("lastName").value;
  var address=document.getElementById("address").value;

  document.getElementById("postFullName").innerHTML=firstName+' '+lastName;
  document.getElementById("postAddress").innerHTML=address;

  var age=parseInt(document.getElementById("age").value);
  var phoneNumber=parseInt(document.getElementById("phoneNumber").value);

  let numberArray=[];
  numberArray.push(age,phoneNumber);

  for(var i=0;i<numberArray.length;i++){
    if(numberArray[i]<=100){
      document.getElementById("postAge").innerHTML="Age:"+age;
    }else if(numberArray[i]>100){
      document.getElementById("postPhoneNumber").innerHTML="Phone Number:"+phoneNumber;
    }
  }
}