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Expand

methods

Expands a specified pane. Invoking this method will force the widget to redraw and it will trigger the resize event. Note: Invoking the method will not trigger an expand event.

expand

Parameters:paneString|Element|jQuery

The pane to be expanded.

<div id="splitter">
  <div>Pane A</div>
  <div>Pane B</div>
</div>
<script>
$("#splitter").kendoSplitter({
  panes: [ { collapsed: true }, {} ]
});
var splitter = $("#splitter").data("kendoSplitter");
splitter.expand(".k-pane:first");
</script>