重新弹出后如何触发jsTree的选择节点事件

Question

I have a requirement of populating my jsTree and firing few ajax calls on selection of any node of jsTree which I am able to it. 我需要填充我的jsTree并在选择我能够做到的jsTree的任何节点时触发一些ajax调用。 But the problem is I have to re-populate the same tree and firing that ajax call again. 但是问题是我必须重新填充同一棵树，并再次触发该ajax调用。 After re-populating, I am not able to firing that SELECT or CLICK NODE event on selection of any tree node. 重新填充后，我无法在选择任何树节点时触发该SELECT或CLICK NODE事件。 Below is the code. 下面是代码。

<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script type="text/javascript"
    src="//static.jstree.com/3.2.1/assets/dist/jstree.min.js"></script>
<link rel="stylesheet"
    href="//static.jstree.com/3.2.1/assets/dist/themes/default/style.min.css" />
<script>

$(document).ready(function(){

$("#tree").on("select_node.jstree", function(event, node) {
    $("#para").text("");
    var selected = node.instance.get_selected();
    if(selected.length === 1) {
      $("#para").text(selected[0]); // Here goes my ajax call.
    } else if(selected.length > 1) {
      alert("hi");
    }
  });

});

function getData(){
    $('#tree').jstree("destroy").empty();


    $('#tree').jstree({
       'core' : {
         'data' : [
           { "id" : "ajson1", "parent" : "#", "text" : "Root node1" },
           { "id" : "ajson2", "parent" : "#", "text" : "Root node 2" },
           { "id" : "ajson3", "parent" : "ajson2", "text" : "Child 1" },
           { "id" : "ajson4", "parent" : "ajson2", "text" : "Child 2" },
         ]
       }
     });
  }
</script>
</head>
<body>

<a id="go" href="#" onclick="getData()">Get Tree</a><br><br><br><br>


<div id="tree"></div>

<p id="para"></p>

</body>
</html>

You can paste this code directly in w3school site and test. 您可以将此代码直接粘贴到w3school网站并进行测试。 Not able make a jsFiddle of it. 无法做到这一点。

Answer 1

You can select a node programmatically by following line of code. 您可以通过以下代码行以编程方式选择节点。

 $('#treeSelector').jstree().select_node('node_id');

It will trigger select_node & change event too. 它也会触发select_node和change事件。

Answer 2

Make a seperate function to add event listener.. then call that function from Doc ready, as well at the end of getData(). 制作一个单独的函数以添加事件侦听器。然后从Doc ready以及getData（）的末尾调用该函数。 like 喜欢

$(document).ready(function(){
    function addEventListener(){
        $("#tree").on("select_node.jstree", function(event, node) {
            $("#para").text("");
            var selected = node.instance.get_selected();
            if(selected.length === 1) {
              $("#para").text(selected[0]); // Here goes my ajax call.
            } else if(selected.length > 1) {
              alert("hi");
            }
          });
      }

      addEventListener();

      function getData(){
        $('#tree').jstree("destroy").empty();
        $('#tree').jstree({
           'core' : {
             'data' : [
               { "id" : "ajson1", "parent" : "#", "text" : "Root node1" },
               { "id" : "ajson2", "parent" : "#", "text" : "Root node 2" },
               { "id" : "ajson3", "parent" : "ajson2", "text" : "Child 1" },
               { "id" : "ajson4", "parent" : "ajson2", "text" : "Child 2" },
             ]
           }
         });
         addEventListener();
      }
 })

重新弹出后如何触发jsTree的选择节点事件

问题描述

2 个解决方案

解决方案1
1 2016-03-18 13:19:49

解决方案2
1 已采纳 2016-03-18 13:36:04

重新弹出后如何触发jsTree的选择节点事件

问题描述

2 个解决方案

解决方案1 1 2016-03-18 13:19:49

解决方案2 1 已采纳 2016-03-18 13:36:04

解决方案1
1 2016-03-18 13:19:49

解决方案2
1 已采纳 2016-03-18 13:36:04