需要访问<form>中的<input>数据，该数据已附加了Javascript

I have an admin page where I add and delete table rows on the fly. The page comes loaded with the existent data in the database (mostly consisting in a sku_code and 5 different prices) but when I add rows on the fly, and fill them with the corresponding skus and prices, I want to save them as well in the database.

The problem is that what I do on the client-side with Javascript (add table rows on the fly) with innerHTML = '<input type="text"> is not accesible via $_POST variables of the main <form>

So basically i add via Javascript 's so i can fill them and save them as well in the database. But the $_POST values are empty. Javascript code works fine. I have no clue where should i start debugging.

here's some Javascript code i'm using

function insert_record(){

    var my_table = document.getElementById('my_table')
    var tr = my_table.insertRow(my_table.rows.length-1)
    //id-ul curent, numar toate row-urile - 1 (care este butonul OK)

    var c_id = my_table.rows.length-2

        tr.id = 'row_' + c_id + ''
    var tr_td_1 = tr.insertCell(0)
        tr_td_1.className = 'text2'
        tr_td_1.align = 'center'
        tr_td_1.innerHTML = 'SKU'
    var tr_td_2 = tr.insertCell(1)  
        tr_td_2.className = 'text3'
        tr_td_2.width = '63'
        tr_td_2.innerHTML = '<input name="sku_' + c_id + '" type="text" id="sku_' + c_id + '" size="33" value="">'

....this addes a inside the table just before the last which contains the submit button, after which there's the

You need to assign a label to element. Then you can grab it in next page.

Instead of innerHTML = <input type="text"> try to use

<script>
      function addElement(tag_type, target, parameters) {
        //Create element
        var newElement = document.createElement(tag_type);

        //Add parameters
        if (typeof parameters != 'undefined') {
          for (parameter_name in parameters) {
            newElement.setAttribute(parameter_name, parameters[parameter_name]);
          }
        }

        //Append element to target
        document.getElementById(target).appendChild(newElement);
      }
    </script>

You can call this function below either click of even or manually addElement('INPUT','targetTag',{id:'my_input_tag', name:'my_input_tag', type:'text', size:'5'});

you should give the name attribute. if you are worried about the unlimited numbers of fields just go for the array of the input variables,

like this

<input type="text" name="field1[]">

Now you can access them in post like this:

$_POST['field1']  //this is an array of fields

EDIT:

First thing is that you should use some library like jquery which eases the work.

I suggest you make sure your all your fields are inside the form and that you have named all of them instead of trying ajax or functions like @shail suggested.

In my opinion they are not solving the problem, just avoiding it.