title: Angular 7, implementing Jstree
body: <p>I want to install jstree in my angular 7 project.
  I followed this tutorial <a href="https://dotnetdetail.net/how-to-add-treeview-in-angular-6-and-asp-net-core-application/" rel="nofollow noreferrer">https://dotnetdetail.net/how-to-add-treeview-in-angular-6-and-asp-net-core-application/</a></p>
  
  <p>I have some problems.
  I think jstree is well installed, but i'm not sure it is well initialized,
  I tested two methods :
  the first one with html data
  and the other one with javascript array</p>
  
  <p>this is my reproducible example : <a href="https://stackblitz.com/edit/angular-anjn4e" rel="nofollow noreferrer">https://stackblitz.com/edit/angular-anjn4e</a></p>
  
  <p>on my DOM i just have my first item , the others are push in the data but doesn't appear.</p>
  
  <p>I don't have any console error so i think it's just a logic problem</p>
  
  <p>thanks for your help</p>