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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>jqTree</title>
<link rel="stylesheet" href="extra/css/gridless.css">
<link rel="stylesheet" href="extra/prism/prism.css">
<link rel="stylesheet" href="jqtree.css">
<link rel="stylesheet" href="extra/css/documentation.css">
<link href='http://fonts.googleapis.com/css?family=Open+Sans:400,700' rel='stylesheet' type='text/css'>
<link href='http://fonts.googleapis.com/css?family=Corben:bold&v1' rel='stylesheet' type='text/css'>
<!--[if lt IE 9]>
<script src="extra/js/jquery-1.10.2.min.js"></script>
<![endif]-->
<!--[if gte IE 9]><!-->
<script src="extra/js/jquery-2.0.3.min.js"></script>
<!--<![endif]-->
<script src="extra/prism/prism.js"></script>
<script src="tree.jquery.js"></script>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-33742133-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script');
ga.type = 'text/javascript';
ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(ga, s);
})();
</script>
</head>
<body>
<div id="sidebar">
<ul class="first">
<li>
<a href="#jqtree">jqTree</a>
<ul>
<li><a href="#introduction">Introduction</a></li>
<li><a href="#features">Features</a></li>
<li><a href="#demo">Demo</a></li>
<li><a href="#requirements">Requirements</a></li>
<li><a href="#downloads">Downloads</a></li>
<li><a href="#tutorial">Tutorial</a></li>
<li><a href="#examples">Examples</a></li>
<li><a href="#changelog">Changelog</a></li>
</ul>
</li>
<li>
<a href="#tree-options">Tree options</a>
<ul>
<li><a href="#tree-options-data">data</a></li>
<li><a href="#tree-options-data-url">dataUrl</a></li>
<li><a href="#tree-options-autoopen">autoOpen</a></li>
<li><a href="#tree-options-savestate">saveState</a></li>
<li><a href="#tree-options-draganddrop">dragAndDrop</a></li>
<li><a href="#tree-options-selectable">selectable</a></li>
<li><a href="#tree-options-oncanselectnode">onCanSelectNode</a></li>
<li><a href="#tree-options-oncreateli">onCreateLi</a></li>
<li><a href="#tree-options-onismovehandle">onIsMoveHandle</a></li>
<li><a href="#tree-options-oncanmove">onCanMove</a></li>
<li><a href="#tree-options-oncanmoveto">onCanMoveTo</a></li>
<li><a href="#tree-options-autoescape">autoEscape</a></li>
<li><a href="#tree-options-slide">slide</a></li>
<li><a href="#tree-options-openedIcon">openedIcon</a></li>
<li><a href="#tree-options-closedIcon">closedIcon</a></li>
<li><a href="#tree-options-usecontextmenu">useContextMenu</a></li>
<li><a href="#tree-options-datafilter">dataFilter</a></li>
<li><a href="#tree-options-keyboardsupport">keyboardSupport</a></li>
<li><a href="#tree-options-onloadfailed">onLoadFailed</a></li>
<li><a href="#tree-options-openfolderdelay">openFolderDelay</a></li>
</ul>
</li>
<li>
<a href="#functions">Functions</a>
<ul>
<li><a href="#functions-loadData">loadData</a></li>
<li><a href="#functions-loaddatafromurl">loadDataFromUrl</a></li>
<li><a href="#functions-tojson">toJson</a></li>
<li><a href="#functions-getnodebyid">getNodeById</a></li>
<li><a href="#functions-selectnode">selectNode</a></li>
<li><a href="#functions-opennode">openNode</a></li>
<li><a href="#functions-closenode">closeNode</a></li>
<li><a href="#functions-getselectednode">getSelectedNode</a></li>
<li><a href="#functions-addnodeafter">addNodeAfter</a></li>
<li><a href="#functions-addnodebefore">addNodeBefore</a></li>
<li><a href="#functions-addparentnode">addParentNode</a></li>
<li><a href="#functions-removenode">removeNode</a></li>
<li><a href="#functions-appendnode">appendNode</a></li>
<li><a href="#functions-updatenode">updateNode</a></li>
<li><a href="#functions-movenode">moveNode</a></li>
<li><a href="#functions-toggle">toggle</a></li>
<li><a href="#functions-scrolltonode">scrollToNode</a></li>
<li><a href="#functions-getstate">getState</a></li>
<li><a href="#functions-setstate">setState</a></li>
<li><a href="#functions-gettree">getTree</a></li>
</ul>
</li>
<li>
<a href="#events">Events</a>
<ul>
<li><a href="#event-tree-click">tree.click</a></li>
<li><a href="#event-tree-dblclick">tree.dblclick</a></li>
<li><a href="#event-tree-select">tree.select</a></li>
<li><a href="#event-tree-contextmenu">tree.contextmenu</a></li>
<li><a href="#event-tree-move">tree.move</a></li>
<li><a href="#event-tree-init">tree.init</a></li>
<li><a href="#event-tree-open">tree.open</a></li>
<li><a href="#event-tree-close">tree.close</a></li>
</ul>
</li>
<li>
<a href="#multiple-selection">Multiple selection</a>
<ul>
<li><a href="#multiple-selection-add-to-selection">addToSelection</a></li>
<li><a href="#multiple-selection-get-selected-nodes">getSelectedNodes</a></li>
<li><a href="#multiple-selection-is-node-selected">isNodeSelected</a></li>
<li><a href="#multiple-selection-remove-from-selection">remove­From­Selection</a></li>
</ul>
</li>
<li>
<a href="#node-functions">Node functions</a>
<ul>
<li><a href="#node-functions-parent">parent</a></li>
<li><a href="#node-functions-children">children</a></li>
<li><a href="#node-functions-getlevel">getLevel</a></li>
<li><a href="#node-functions-getprevioussibling">getPreviousSibling</a></li>
<li><a href="#node-functions-getnextsibling">getNextSibling</a></li>
<li><a href="#node-functions-getdata">getData</a></li>
</ul>
</li>
</ul>
</div>
<div id="page">
<div class="group">
<div id="main-title">
<img src="tree_logo.png" class="logo" />
<h1 id="jqtree">jqTree</h1>
</div>
</div>
<p id="introduction">
JqTree is a tree widget.
</p>
<h4 id="features">Features</h4>
<ul>
<li>Create a tree from JSON data</li>
<li>Drag and drop</li>
<li>Works on ie7+, firefox 3.6+, chrome and safari</li>
<li>Written in Coffeescript</li>
</ul>
<p>
The project is <a href="https://github.com/mbraak/jqTree">hosted on github</a>,
has a <a href="test/test.html">test suite</a>.
</p>
<div class="group" id="demo">
<div class="container-left">
<div class="inner">
<pre><code class="language-javascript dark">
var data = [
{
label: 'node1',
children: [
{ label: 'child1' },
{ label: 'child2' }
]
},
{
label: 'node2',
children: [
{ label: 'child3' }
]
}
];
$('#tree1').tree({
data: data,
autoOpen: true,
dragAndDrop: true
});
</code></pre>
</div>
</div>
<div class="container-right">
<div class="inner">
<div id="tree1"></div>
</div>
</div>
</div>
<h4 id="requirements">Requirements</h4>
<ul>
<li><a href="http://jquery.com">jQuery</a> 1.5+ or 2.0</li>
</ul>
<h4 id="downloads">Downloads</h4>
<ul>
<li>All (version 0.19): <a href="https://github.com/mbraak/jqTree/tarball/master">jqTree.tar.gz</a></li>
<li>Javascript: <a href="tree.jquery.js">tree.jquery.js</a></li>
<li>Css: <a href="jqtree.css">jqtree.css</a></li>
<li>Image: <a href="jqtree-circle.png">jqtree-circle.png</a></li>
</ul>
<h4 id="tutorial">Tutorial</h4>
<ul>
<li>
Include <a href="http://code.jquery.com/jquery.min.js">jQuery</a>.
<pre><code class="language-markup">
<script src="jquery.min.js"></script>
</code></pre>
</li>
<li>
Include tree.jquery.js:
<pre><code class="language-markup">
<script src="tree.jquery.js"></script>
</code></pre>
</li>
<li>
Include jqtree.css:
<pre><code class="language-markup">
<link rel="stylesheet" href="jqtree.css">
</code></pre>
</li>
<li>
Optionally, for saveState include <a href="https://github.com/carhartl/jquery-cookie">jquery-cookie</a>:
<pre><code class="language-markup">
<script src="jquery.cookie.js"></script>
</code></pre>
</li>
<li>
Create a div.
<pre><code class="language-markup">
<div id="tree1"></div>
</code></pre>
</li>
<li>
Create tree data.
<pre><code class="language-javascript">
var data = [
{
label: 'node1',
children: [
{ label: 'child1' },
{ label: 'child2' }
]
},
{
label: 'node2',
children: [
{ label: 'child3' }
]
}
];
</code></pre>
</li>
<li>
Create tree widget.
<pre><code class="language-javascript">
$(function() {
$('#tree1').tree({
data: data
});
});
</code></pre>
</li>
<li>
Alternatively, get the data from the server.
<pre><code class="language-javascript">
$.getJSON(
'/some_url/',
function(data) {
$('#tree1').tree({
data: data
});
}
);
</code></pre>
</li>
</ul>
<h4 id="examples">Examples</h4>
<ul>
<li><a href="examples/load_json_data.html">Example 1 - load json data</a></li>
<li><a href="examples/load_json_data_from_server.html">Example 2 - load json data from the server</a></li>
<li><a href="examples/drag_and_drop.html">Example 3 - drag and drop</a></li>
<li><a href="examples/save_state.html">Example 4 - save the state</a></li>
<li><a href="examples/load_on_demand.html">Example 5 - load nodes on demand from the server</a></li>
<li><a href="examples/autoescape.html">Example 6 - autoEscape</a></li>
<li><a href="examples/autoscroll.html">Example 7 - autoscroll</a></li>
<li><a href="examples/multiple_select.html">Example 8 - multiple select</a></li>
<li><a href="examples/custom_html.html">Example 9 - custom html</a></li>
</ul>
<h4 id="changelog">Changelog</h4>
<h5>0.19 (december 8 2013)</h5>
<ul>
<li>Issue 225: Fixes TypeError when removing nodes without ids that aren't selected (thanks to Marcus McCurdy)</li>
<li>Issue 222: scrollToNode does not consider direct parent</li>
<li>Issue 228: add property click_event to tree.click and tree.dblclick events (thanks to Gordon Woodhull)</li>
<li>Added option openFolderDelay: the delay for opening a folder during drag-and-drop (thanks to Jason Diamond)</li>
</ul>
<h5>0.18 (september 17 2013)</h5>
<ul>
<li>Issue 132: Skip keyboard handling if focus is on input element (thanks to Bingeling)</li>
<li>Issue 179 and 180: Added dataFilter option to filter the returned data from jQuery.ajax (thanks to Cheton Wu and Tony Dilger)</li>
<li>Issue 184: If the node id is 0, the id mapping is incorrect (thanks to Ika Wu)</li>
<li>Issue 190: The function selectNode should not toggle (thanks to Gordon Woodhull)</li>
<li>Issue 192: Added keyboardSupport option (thanks to Ika Wu)</li>
<li>Issue 181: Added tree.dblclick event (thanks to eskaigualker)</li>
<li>Issue 196: localStorage doesn't work in Safari private browsing (thanks to thebagg)</li>
<li>Issue 203: Adding deselected_node attribute to event object of tree.select event (thanks to tedtoer)</li>
</ul>
<h5>0.17 (july 14 2013)</h5>
<ul>
<li>Issue 132: Added keyboard support</li>
<li>Issue 154: Calling loadDataFromUrl should not trigger tree.init event (thanks to Davide Bellini)</li>
<li>Issue 158: Index not updated on updateNode (thanks to Sam Mousa)</li>
<li>Issue 159: Cannot reselect node after unselecting it (thanks to Comanche)</li>
<li>Issue 162: Added getPreviousSibling and getNextSibling functions (thanks to Dimaninc)</li>
<li>Issue 169: Added touch support (thanks to Comanche)</li>
<li>Issue 171: Added functions getState and setState</li>
<li>Issue 175: Make it possible to install jqTree using bower (thanks to Adam Miskiewicz)</li>
</ul>
<h5>0.16 (may 17 2013)</h5>
<ul>
<li>Issue 62: Added functions for multiple select</li>
<li>Issue 125: Add option for overriding TRIANGLE_RIGHT and TRIANGLE_DOWN (thanks to Sam D)</li>
<li>Issue 126: Event tree.open event fires after first tree.select on top level node</li>
<li>Issue 129: Allow native context menu to be display (thanks to Charles Bourasseau)</li>
<li>Issue 130: Selectable not implemented (thanks to Sam D)</li>
<li>Issue 133: loadDataFromUrl doesn't work when only parent_node and callback are passed in (thanks to Simone Deponti)</li>
<li>Issue 134: selectNode from inside tree.init breaks on loadData (thanks to Sam D)</li>
<li>Issue 145: Auto-open nodes with drag n drop when drag not enabled for that node (thanks to Daniel Powell)</li>
<li>Issue 146: Added function scrollToNode (thanks to Davide Bellini)</li>
</ul>
<h5>0.15 (march 16 2013)</h5>
<ul>
<li>Issue 100: Clicking on the jqtree-element element will trigger click event</li>
<li>Issue 102: Add original event to tree.move event</li>
<li>Issue 103: Added getLevel function to Node class</li>
<li>Issue 104: The addNodeBefore method must return the new node</li>
<li>Issue 105: Added nodeClass option</li>
<li>Issue 112: Fix call to iterate in removeNode (thanks to Ingemar Ådahl)</li>
<li>Issue 113: Added onLoadFailed option (thanks to Shuhei Kondo)</li>
<li>Issue 118: Deselect a node when click and already selected</li>
<li>Issue 119: Make it easier to reload a subtree</li>
<li>Issue 121: Unselect node if it's reloaded by loadDataFromUrl</li>
</ul>
<h5>0.14 (december 2 2012)</h5>
<h6>Api changes</h6>
<ul>
<li>Removed parameter <strong>must_open_parents</strong> from function <strong>selectNode</strong>.</li>
<li>Changed <strong>slide</strong> parameter in functions <strong>openNode</strong> and <strong>closeNode</strong>.</li>
</ul>
<h6>Issues</h6>
<ul>
<li>Issue 80: Support more options for loading data from the server. E.g. the 'post' method (thanks to Rodrigo Rosenfeld Rosas)</li>
<li>Issue 81: getSelectedNode must return false if node is removed</li>
<li>Issue 82: Autoscroll for drag-and-drop</li>
<li>Issue 84: Fix correct type param in $.ajax() (thanks to Rodrigo Rosenfeld Rosas)</li>
<li>Issue 85: Option to turn slide animation on or off</li>
<li>Issue 86: The openNode function must automatically open parents</li>
<li>Issue 87: Remove the must_open_parents parameter from the selectNode function</li>
<li>Issue 88: selectNode must also work if selectable option is false</li>
<li>Issue 89: Clicking in title with img or em does not work</li>
<li>Issue 96: Added jqtree_common class to avoid css clashes (thanks to Yaniv Iny)</li>
</ul>
<h5>0.13 (october 10 2012)</h5>
<ul>
<li>Issue 54: Added tree.select event</li>
<li>Issue 63: Fixed contextmenu event</li>
<li>Issue 67: Use unicode characters for triangle buttons (thanks to Younès)</li>
<li>Issue 70: Load data from the server using the loadData function</li>
<li>Issue 78: Drag and drop is trigger happy</li>
</ul>
<h5>0.12 (august 14 2012)</h5>
<ul>
<li>Issue 46: Added tree.refresh event</li>
<li>Issue 47: Function 'selectNode' must properly open the parent nodes</li>
<li>Issue 49: Make sure that widget functions can be called in the 'tree.init' event</li>
<li>Issue 50: Add namespace to css classes</li>
<li>Issue 51: closeNode to collapse tree doesn't work</li>
<li>Issue 55: Load-on-demand from the server</li>
<li>Issue 58: Added updateNode function</li>
<li>Issue 59: Added moveNode function</li>
<li>Issue 60: Use native JSON.stringify function</li>
</ul>
<h5>0.11 (july 8 2012)</h5>
<ul>
<li>Autoescape text</li>
<li>Added autoEscape option</li>
<li>Issue 33: appendNode does not correctly refresh the tree</li>
<li>Issue 34: unset internal pointer to previously selected node on DOM deselect</li>
<li>Issue 38: Correctly check if browser has support for localstorage</li>
<li>Issue 41: Open nodes are not displayed correctly in ie7</li>
</ul>
<h5>0.10 (june 10 2012)</h5>
<ul>
<li>Optimized getNodeById</li>
<li>Issue #18 and #26: Made comparison in getNodeById less strict</li>
<li>Added function prependNode</li>
<li>Added 'data-url' option</li>
<li>Added removeNode function</li>
<li>Issue #24: Tree with jquery ui Dialog: expand causes resize and move problem</li>
<li>Added Travis ci support</li>
<li>Added addNodeAfter, addNodeBefore and addParentNode</li>
<li>Renamed icons.png to jqtree-icons.png</li>
<li>selectNode with empty node deselects the current node</li>
</ul>
<h5>0.9 (may 9 2012)</h5>
<ul>
<li>Issue 15: 'tree.open' event is not triggered when dragging nodes</li>
<li>Issue 18: Allow moveNode to be canceled through ev.preventDefault()</li>
<li>Use sprite for images</li>
<li>Added function closeNode</li>
<li>Added support for localstorage</li>
<li>Implemented alternative data format</li>
</ul>
<h5>0.8 (april 18 2012)</h5>
<ul>
<li>Replace jquery.ui widget with SimpleWidget</li>
<li>Added 'previous_parent' to 'tree.move' event</li>
<li>Add posibility to load subtree</li>
<li>Added 'tree.open' and 'tree.close' events</li>
</ul>
<h4 id="tree-options">Tree options</h4>
<h5 id="tree-options-data">data</h5>
<p>
Define the contents of the tree. The data is a nested array of objects. This option is required.
<br>
It looks like this:
</p>
<pre><code class="language-javascript">
var data = [
{
label: 'node1',
children: [
{ label: 'child1' },
{ label: 'child2' }
]
},
{
label: 'node2',
children: [
{ label: 'child3' }
]
}
];
$('#tree1').tree({data: data});
</code></pre>
<ul>
<li>label: label of a node (required)</li>
<li>children: array of child nodes (optional)</li>
</ul>
<p>
You can also include other data in the objects. You can later access this data.
<br>
For example, to add an id:
</p>
<pre><code class="language-javascript">
{
label: 'node1',
id: 1
}
</code></pre>
<h5 id="tree-options-data-url">dataUrl</h5>
<p>
Load the node data from this url.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
dataUrl: '/example_data.json'
});
</code></pre>
<p>
You can also set the <strong>data-url</strong> attribute on the dom element:
</p>
<pre><code class="language-javascript">
<div id="tree1" data-url="/example_data.json"></div>
<script>
$('#tree1').tree();
</script>
</code></pre>
<h5 id="tree-options-autoopen">autoOpen</h5>
<p>
Open nodes initially.
</p>
<ul>
<li>
<strong>true</strong>: open all nodes.
</li>
<li>
<strong>false (default)</strong>: do nothing
</li>
<li><strong>n</strong>: open n levels</li>
</ul>
<p>
Open all nodes initially:
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
autoOpen: true
});
</code></pre>
<p>
Open first level nodes:
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
autoOpen: 0
});
</code></pre>
<h5 id="tree-options-savestate">saveState</h5>
<p>
Save and restore the state of the tree automatically. Saves in a cookie which nodes are opened and selected.
<br>
The state is saved in localstorage. In browsers that do not support localstorage, the state is saved in a cookie.
For this to work, please include <a href="https://github.com/carhartl/jquery-cookie">jquery-cookie</a>.
</p>
<p>
For this to work, you should give each node in the tree data an id field:
</p>
<pre><code class="language-javascript">
{
label: 'node1',
id: 123,
childen: [
label: 'child1',
id: 124
]
}
</code></pre>
<ul>
<li><strong>true</strong>: save and restore state in a cookie</li>
<li><strong>false (default)</strong>: do nothing</li>
<li><strong>string</strong>: save state and use this name to store in a cookie</li>
</ul>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
saveState: true
});
</code></pre>
<p>
Example: save state in key 'tree1':
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
saveState: 'tree1'
});
</code></pre>
<h5 id="tree-options-draganddrop">dragAndDrop</h5>
<p>
Turn on dragging and dropping of nodes.
</p>
<ul>
<li><strong>true</strong>: turn on drag and drop</li>
<li><strong>false (default)</strong>: do not allow drag and drop</li>
</ul>
<p>
Example: turn on drag and drop.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
dragAndDrop: true
});
</code></pre>
<h5 id="tree-options-selectable">selectable</h5>
<p>
Turn on selection of nodes.
</p>
<ul>
<li><strong>true (default)</strong>: turn on selection of nodes</li>
<li><strong>false</strong>: turn off selection of nodes</li>
</ul>
<p>
Example: turn off selection of nodes.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
selectable: false
});
</code></pre>
<h5 id="tree-options-oncanselectnode">onCanSelectNode</h5>
<p>
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.
<br />
For this to work, the option 'selectable' must be 'true'.
</p>
<pre><code class="language-javascript">
// 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;
}
}
});
</code></pre>
<h5 id="tree-options-oncreateli">onCreateLi</h5>
<p>
The function is called for each created node. You can use this to define extra html.
</p>
<pre><code class="language-javascript">
$('#tree1).tree({
data: data,
onCreateLi: function(node, $li) {
// Add 'icon' span before title
$li.find('.jqtree-title').before('<span class="icon"></span>');
}
});
</code></pre>
<h5 id="tree-options-onismovehandle">onIsMoveHandle</h5>
<p>
You can override this function to determine if a dom element can be used to move a node.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
onIsMoveHandle: function($element) {
// Only dom elements with 'jqtree-title' class can be used
// as move handle.
return ($element.is('.jqtree-title'));
}
});
</code></pre>
<h5 id="tree-options-oncanmove">onCanMove</h5>
<p>
You can override this function to determine if a node can be moved.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
dragAndDrop: true,
onCanMove: function(node) {
if (! node.parent.parent) {
// Example: Cannot move root node
return false;
}
else {
return true;
}
}
});
</code></pre>
<h5 id="tree-options-oncanmoveto">onCanMoveTo</h5>
<p>
You can override this function to determine if a node can be moved to a certain position.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
data: data,
dragAndDrop: true,
onCanMoveTo: function(moved_node, target_node, position) {
if (target_node.is_menu) {
// Example: can move inside menu, not before or after
return (position == 'inside');
}
else {
return true;
}
}
});
</code></pre>
<h5 id="tree-options-autoescape">autoEscape</h5>
<p>
Determine if text is autoescaped. The default is true.
</p>
<h5 id="tree-options-slide">slide</h5>
<p>
Turn slide animation on or off. Default is true.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
slide: false
});
</code></pre>
<h5 id="tree-options-openedIcon">openedIcon</h5>
<p>
A character or symbol to display on opened nodes. The default is '&#x25bc;' (▼)
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
openedIcon: '-'
});
</code></pre>
<h5 id="tree-options-closedIcon">closedIcon</h5>
<p>
A character or symbol to display on closed nodes. The default is '&#x25ba;' (►)
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
closedIcon: '+'
});
</code></pre>
<h5 id="tree-options-usecontextmenu">useContextMenu</h5>
<p>
Bind the context menu event (true/false).
</p>
<p>
<strong>true</strong> (default)
<br>
A right mouse-click will trigger a <a href="#event-tree-contextmenu">tree.contextmenu</a> event. This overrides the native contextmenu of the browser.
</p>
<p>
<strong>false</strong>
<br>
A right mouse-click will trigger the native contextmenu of the browser.
</p>
<h5 id="tree-options-datafilter">dataFilter</h5>
<p>
Process the tree data from the server.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
url: '/my/data/',
dataFilter: function(data) {
// Example:
// the server puts the tree data in 'my_tree_data'
return data['my_tree_data'];
}
});
</code></pre>
<h5 id="tree-options-keyboardsupport">keyboardSupport</h5>
<p>
Enable or disable keyboard support. Default is enabled.
</p>
<p>
Example: disable keyboard support.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
keyboardSupport: false
});
</code></pre>
<h5 id="tree-options-onloadfailed">onLoadFailed</h5>
<p>
When loading the data by ajax fails, then the option <strong>onLoadFailed</strong> is called.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
url: '/my/data/',
onLoadFailed: function(response) {
//
}
});
</code></pre>
<h5 id="tree-options-openfolderdelay">openFolderDelay</h5>
<p>
Set the delay for opening a folder during drag-and-drop. The delay is in milliseconds. The default is 500 ms.
</p>
<pre><code class="language-javascript">
$('#tree1').tree({
url: '/my/data/',
openFolderDelay: 1000
});
</code></pre>
<h4 id="functions">Functions</h4>
<h5 id="functions-loadData">loadData</h5>
<p>
<strong>function loadData(data);</strong>
<br>
<strong>function loadData(data, parent_node);</strong>
<br>
</p>
<p>
Load data in the tree. The data is array of nodes.
<br>
You can <strong>replace the whole tree</strong> or you can <strong>load a subtree</strong>.
</p>
<pre><code class="language-javascript">
// Assuming the tree exists
var new_data = [
{
label: 'node1',
children: [
{ label: 'child1' },
{ label: 'child2' }
]
},
{
label: 'node2',
children: [
{ label: 'child3' }
]
}
];
$('#tree1').tree('loadData', new_data);
</code></pre>
<p>
Load a subtree:
</p>
<pre><code class="language-javascript">
// Get node by id (this assumes that the nodes have an id)
var node = $('#tree1').tree('getNodeById', 100);
// Add new nodes
var data = [
{ label: 'new node' },
{ label: 'another new node' }
];
$('#tree1').tree('loadData', data, node);
</code></pre>
<h5 id="functions-loaddatafromurl">loadDataFromUrl</h5>
<p>
<strong>function loadDataFromUrl(url);</strong>
<br>
<strong>function loadDataFromUrl(url, parent_node);</strong>
<br>
<strong>function loadDataFromUrl(parent_node);</strong>
</p>
<p>
Load data in the tree from an url using ajax. You can <strong>replace the whole tree</strong> or you can <strong>load a subtree</strong>.
</p>
<pre><code class="language-javascript">
$('#tree1').tree('loadDataFromUrl', '/category/tree/');
</code></pre>
<p>
Load a subtree:
</p>
<pre><code class="language-javascript">
var node = $('#tree1').tree('getNodeById', 123);
$('#tree1').tree('loadDataFromUrl', '/category/tree/123', node);
</code></pre>
<p>
You can also omit the url. In this case jqTree will generate a url for you. This is very useful if you use the load-on-demand feature:
</p>
<pre><code class="language-javascript">
var $tree = $('#tree1');
$tree.tree({
dataUrl: '/my_data/'
});
var node = $tree.tree('getNodeById', 456);
// jqTree will load data from /my_data/?node=456
$tree.tree('loadDataFromUrl', node);
</code></pre>
<p>
You can also add an <strong>on_finished</strong> callback parameter that will be called when the data is loaded:
</p>
<p>
<strong>function loadDataFromUrl(url, parent_node, on_finished);</strong>
<br>
<strong>function loadDataFromUrl(parent_node, on_finished);</strong>
</p>
<pre><code class="language-javascript">$('#tree1').tree(
'loadDataFromUrl',
'/category/tree/123',
null,
function() {
alert('data is loaded');
}
);
</code></pre>
<h5 id="functions-tojson">toJson</h5>
<p>
<strong>function toJson();</strong>
<br>
Get the tree data as json.
</p>
<pre><code class="language-javascript">
// Assuming the tree exists
$('#tree1').tree('toJson');
</code></pre>
<h5 id="functions-getnodebyid">getNodeById</h5>
<p>
<strong>function getNodeById(id);</strong>
<br>
Get a tree node by node-id. This assumes that you have given the nodes in the data a unique id.
</p>
<pre><code class="language-javascript">
var $tree = $('#tree1');
var data = [
{ id: 10, name: 'n1' },
{ id: 11, name: 'n2' }
];
$tree.tree({
data: data
});
var node = $tree.tree('getNodeById', 10);
</code></pre>
<h5 id="functions-selectnode">selectNode</h5>
<p>
<strong>function selectNode(node);</strong>
<br>
<strong>function selectNode(null);</strong>
</p>
<p>
Select this node.
<br>
You can deselect the current node by calling <strong>selectNode(null)</strong>.
</p>
<pre><code class="language-javascript">
// create tree
var $tree = $('#tree1');
$tree.tree({
data: data,
selectable: true
});
var node = $tree.tree('getNodeById', 123);
$tree.tree('selectNode', node);
</code></pre>
<h5 id="functions-opennode">openNode</h5>
<p>
<strong>function openNode(node);</strong>
<br>
<strong>function openNode(node, slide);</strong>
</p>
<p>
Open this node. The node must have child nodes.
<br>
Parameter <strong>slide</strong>: open the node using a slide animation (default is true).
</p>
<pre><code class="language-javascript">
// create tree
var $tree = $('#tree1');
$tree.tree({