text in textvak stoppen dmv code

<script>
function addTxt(veld,bericht) {
	var x = document.getElementByName(veld);

	var.value = var.value+bericht;
}
</script>

<script>
function addTxt(veld,bericht) {
	var x = document.getElementByName(veld);
 
	var.value = var.value+bericht;
}
</script>

<script type="text/javascript">
function addText(veld,bericht){
    var veld = document.getElementById(veld);
    veld.value = veld.value+bericht;
}
</script>

<script type="text/javascript">
function addText(veld,bericht){
    var veld = document.getElementById(veld);
    veld.value = veld.value+bericht;
}
</script>

<a onclick="javascript:addText("veld","Textje)">Klik hier!</a>

<a onclick="javascript:addText("veld","Textje)">Klik hier!</a>

<input type="text" id="veld">

<input type="text" id="veld">