How to retrieve value of input type in a dynamic table

function neeminhoud3(){
    var tabel = document.getElementById('tableDiagnose');
    var rijen = tabel.rows.length;

    for (i = 0; i < rijen; i++){
        var inputs = tabel.rows.item(i).getElementsByTagName("input");
        var inputslengte = inputs.length;

        for(var j = 0; j < inputslengte; j++){
            var inputval = inputs[j].value;                
            alert(inputval);
        }            
    }      
}

if you want to get all input fields out of your table

Well you're not even trying to access the value...

alert(tbl.rows[rCount-1].cells[0].children[0].value);

You need to access the input object WITHIN the cell. You're just looking at the HTML within it.

Try tbl.rows[rCount - 1].cells[0].children[0].value;

alert(tbl.rows[rCount - 1].cells[0].getElementsByTagName("input")[0].value);