Valor de entrada de cambio de JavaScript
document.getElementById("ID").value = "Tamer Jarrar";
Tamer Jarrar
document.getElementById("ID").value = "Tamer Jarrar";
<input type="text" value="" onchange="updateInput(this.value)" />
<script>
function updateInput(ish){
document.getElementById("fieldname").value = ish;
}
</script>function updateInput(ish){
document.getElementById("fieldname").value = ish;
}