Sample: dhtmlxToolbar Input Item State dhtmlxToolbar main page
X
 
<script>
 
    var webBar = new dhtmlXToolbarObject("toolbarObj");
    ...
    // enabling an input item
    webBar.enableItem(itemId);
    // disabling an input item
    webBar.disableItem(itemId);
    // is an input item enabled
    var isEnabled = webBar.isEnabled(itemId);
</script>