thanks, I have tried to do your indications like this,
var count = 1;
$(function () {
$('#submit').click(function () {
var met = $('#nom').val();
var metiers = met.split(', ');
var join = "";
$.each(metiers, function(index, valeur) {
join += valeur + "<br>";
var element = document.createElement("input");
element.setAttribute("type", "text");
element.setAttribute("value", valeur);
element.setAttribute("name", "txtbox"+ count);
var vals = document.getElementById("inputbox");
vals.appendChild(element);
var br = document.createElement("br");
vals.appendChild(br);
});
})
});
<div id = "inputbox">
<input type="text" value="A, B, C, D" id="nom">
</div>
I don't know where is wrong but the input doesn't appears