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---
title: onCanSelectNode
name: options-oncanselectnode
---
You can set a function to override if a node can be selected. The function gets a node as parameter, and must return true or false.
For this to work, the option 'selectable' must be 'true'.
{% highlight js %}
// Example: nodes with children cannot be selected
$('#tree1').tree({
data: data,
selectable: true
onCanSelectNode: function(node) {
if (node.children.length == 0) {
// Nodes without children can be selected
return true;
}
else {
// Nodes with children cannot be selected
return false;
}
}
});
{% endhighlight %}
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