how to bring the append values in dropdown

function appendRow()
{
var x = document.getElementById('camnos').value;
var d = document.getElementById('myList');
alert('please enter the ip address');

for(var i=0; i < x; i++)
{
    var input = document.createElement('input'); 
    input.type = "text"; 
    input.id = "camera"+i;
     
    d.appendChild(input);
}
}
 //document.getElementById("btnSave").style.visibility = "hidden";
 function enterkey()
 
 {
var parent = document.getElementById('myList');
var childNodes = parent.childNodes;
for(var i = 0, len = childNodes.length;i<len;i++){
    if(childNodes[i].id === "camera0") {  
var number=document.getElementById("camera0").value;  
var x = document.getElementById("zonelist");
  var option = document.createElement("option");
  option.text = number;
  x.add(option);
  
}  
}
    
}

i want to add the append values in dropdown as options for php, pls help me with some other to . the requirement is to append the empty box, then values will be in the append empty box, the entered values has to be displayed in the dropdown as options