jstree expend all node

How to Expand All Nodes in jstree#

If you are working with jstree, you might have faced the issue of expanding all nodes at once. Well, I have been there too, and I am here to share my experience with you.

Method 1: Using .open_all() Method#

The easiest way to expand all nodes at once is by using the .open_all() method. This method is provided by jstree and is very simple to use. All you need to do is call this method on your jstree instance, and it will expand all the nodes.

$(document).ready(function(){
   $('#jstree').jstree();
   $('#jstree').jstree('open_all');
});

Here, we are calling the .jstree() method on our tree element and then calling the .open_all() method on it. This will expand all the nodes in the tree.

Method 2: Using .open_node() Method Recursively#

If you want more control over which nodes to expand, you can use the .open_node() method recursively. This method takes a node as an argument and expands it, along with all its children.

$(document).ready(function(){
   $('#jstree').jstree();
   $('#jstree').jstree('get_node', '#root_node').children_d.forEach(function(node) {
      $('#jstree').jstree('open_node', node);
   });
});

Here, we are first getting the root node of our tree and then using its children_d property to get an array of all its child nodes. We are then using a forEach loop to call the .open_node() method on each of these child nodes, which will expand them recursively.

Method 3: Using Custom Functionality#

If you want even more control over which nodes to expand, you can write your own custom functionality. Here is an example of how you can do it:

function expandAllNodes(node) {
   $('#jstree').jstree('open_node', node);
   node.children.forEach(function(child) {
      expandAllNodes(child);
   });
}

$(document).ready(function(){
   $('#jstree').jstree();
   var rootNode = $('#jstree').jstree(true).get_node('#root_node');
   expandAllNodes(rootNode);
});

Here, we are defining our own function called expandAllNodes, which takes a node as an argument. This function calls the .open_node() method on the given node and then uses a forEach loop to call itself recursively on all its children nodes.

In the document ready function, we are first getting the root node of our tree and then calling our custom function on it.

Conclusion#

These are some of the ways you can expand all nodes in jstree. You can choose the method that suits your needs the best. Happy coding!