open
Opens the button menu.
Example
<button id="splitbutton" type="button">Button</button>
<script>
$("#splitbutton").kendoSplitButton({
items:[
{ id: "item1", text: "Item 1" },
{ id: "item2", text: "Item 2" }
]
});
var button = $("#splitbutton").data("kendoSplitButton");
button.open();
</script>