Select all tree nodes
Examples
Sample
<button onclick="tree.selectAll()" class="gj-button-md">Select All</button>
<button onclick="tree.unselectAll()" class="gj-button-md">Unselect All</button>
<br/>
<div id="tree" data-source="/Locations/Get"></div>
<script>
var tree = $('#tree').tree({
selectionType: 'multiple'
});
tree.on('dataBound', function() {
tree.expandAll();
});
</script>