toolbar.buttons.attr Object
Defines an object that is applied to the button element as attributes.
Example
<div id="chat"></div>
<script>
$("#chat").kendoChat({
toolbar: {
buttons: [
{ name: "ButtonA", attr: { "class": "myClass" } },
{ name: "ButtonB", attr: { "class": "myClass" } }
]
}
});
</script>