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这是来自官网的一个例子，在次贴出的原因是提示
务必不要把jquery和jstree的加载顺序搞反了，否则jstree不起作用。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>jsTree test</title>
<!-- 2 load the theme CSS file -->
<link rel="stylesheet" href="dist/themes/default/style.min.css" />
</head>
<body>
<!-- 3 setup a container element -->
<div id="jstree">
<!-- in this example the tree is populated from inline HTML -->
<ul>
<li>Root node 1
<ul>
<li id="child_node_1">Child node 1</li>
<li>Child node 2</li>
</ul>
</li>
<li>Root node 2</li>
</ul>
</div>
<button>demo button</button>
<!-- 4 include the jQuery library -->
<script src="dist/libs/jquery.js"></script>
<!-- 5 include the minified jstree source -->
<script src="dist/jstree.min.js"></script>
<script>
$(function () {
// 6 create an instance when the DOM is ready
$('#jstree').jstree();
// 7 bind to events triggered on the tree
$('#jstree').on("changed.jstree", function (e, data) {
console.log(data.selected);
});
// 8 interact with the tree - either way is OK
$('button').on('click', function () {
$('#jstree').jstree(true).select_node('child_node_1');
$('#jstree').jstree('select_node', 'child_node_1');
$.jstree.reference('#jstree').select_node('child_node_1');
});
});
</script>
</body>
</html>