Search results

Getting Started with Vue 3 in Vue Dropdown Tree component

21 Oct 2021 / 4 minutes to read

This section explains how to use Dropdown Tree component in Vue 3 application.

Prerequisites

  • vue : 3+
  • node : 10.15+
  • vue-class-component : 8.0.0-rc.1

Creating Vue application using Vue CLI

The easiest way to create a Vue application is to use the Vue CLI. Vue CLI versions above 4.5.0 are mandatory for creating applications using Vue 3. Use the following command to uninstall older versions of the Vue CLI.

Copied to clipboard
npm uninstall vue-cli -g

Use the following commands to install the latest version of Vue CLI.

Copied to clipboard
npm install -g @vue/cli
npm install -g @vue/cli-init

Create a new project using the command below.

Copied to clipboard
vue create quickstart

Initiating a new project prompts us to choose the type of project to be used for the current application. Select the option Default (Vue 3 Preview) from the menu.

Reference

Adding Syncfusion Dropdown Tree package in the application

Syncfusion Vue packages are maintained in the npmjs.com registry. The Dropdown Tree component will be used in this example. To install it use the following command.

Copied to clipboard
npm install @syncfusion/ej2-vue-dropdowns --save

Adding CSS reference for Syncfusion Vue Dropdown Tree component

Import the needed CSS styles for the Dropdown Tree component along with dependency styles in the <style> section of the src/App.vue file as follows.

Copied to clipboard
<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-inputs/styles/material.css";
@import "../node_modules/@syncfusion/ej2-navigations/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-dropdowns/styles/material.css";
</style>

Note: Dropdown Tree component use other Syncfusion components too, the dependent component’s CSS references need to be added for using all the Dropdown Tree functionalities.

Adding Syncfusion Vue Dropdown Tree component in the application

You have completed all the necessary configurations needed for rendering the Syncfusion Vue component. Now, you are going to add the Dropdown Tree component using following steps.

  1. Import the Dropdown Tree component in the <script> section of the src/App.vue file.
Copied to clipboard
 <script>
 import { DropDownTreeComponent } from '@syncfusion/ej2-vue-dropdowns';
 </script>  
  1. Register the Dropdown Tree component in src/App.vue file which are used in this example.
Copied to clipboard
 import { DropDownTreeComponent } from '@syncfusion/ej2-vue-dropdowns';
 //Component registeration
 export default {
     name: "App",
     components: {
       'ejs-dropdowntree' : DropDownTreeComponent
     }
 }

In the above code snippet, you have registered Dropdown Tree component.

  1. Add the component definition in template section.
Copied to clipboard
 <template>
     <ejs-dropdowntree id='dropdowntree' :fields='fields'></ejs-dropdowntree>
 </template>  

Above is the Dropdown Tree component definition, with fields property binding definition.

  1. Declare the bound properties in the script section. Declare the collection data which is bound for the fields property.
Copied to clipboard
 var data =  [
 {
     nodeId: '01', nodeText: 'Music',
     nodeChild: [
         { nodeId: '01-01', nodeText: 'Gouttes.mp3' }
     ]
 },
 {
     nodeId: '02', nodeText: 'Videos', expanded: true,
     nodeChild: [
         { nodeId: '02-01', nodeText: 'Naturals.mp4' },
         { nodeId: '02-02', nodeText: 'Wild.mpeg' },
     ]
 },
 {
     nodeId: '03', nodeText: 'Documents',
     nodeChild: [
         { nodeId: '03-01', nodeText: 'Environment Pollution.docx' },
         { nodeId: '03-02', nodeText: 'Global Water, Sanitation, & Hygiene.docx' },
         { nodeId: '03-03', nodeText: 'Global Warming.ppt' },
         { nodeId: '03-04', nodeText: 'Social Network.pdf' },
         { nodeId: '03-05', nodeText: 'Youth Empowerment.pdf' },
     ]
 }];
 export default {
   name: 'App',
   components: {
     'ejs-dropdowntree' : DropDownTreeComponent
   },
   data() {
     return {
       fields: { dataSource: data, value: 'nodeId', text: 'nodeText', child: 'nodeChild' }
     };
   },
 };
  1. Summarizing the above steps, update the src/App.vue file with following code.
Copied to clipboard
 <template>
   <ejs-dropdowntree id='dropdowntree' :fields='fields'></ejs-dropdowntree>
 </template>
 <script>
 import { DropDownTreeComponent } from '@syncfusion/ej2-vue-dropdowns';

 var data =  [
   {
       nodeId: '01', nodeText: 'Music',
       nodeChild: [
           { nodeId: '01-01', nodeText: 'Gouttes.mp3' }
       ]
   },
   {
       nodeId: '02', nodeText: 'Videos', expanded: true,
       nodeChild: [
           { nodeId: '02-01', nodeText: 'Naturals.mp4' },
           { nodeId: '02-02', nodeText: 'Wild.mpeg' },
       ]
   },
   {
       nodeId: '03', nodeText: 'Documents',
       nodeChild: [
           { nodeId: '03-01', nodeText: 'Environment Pollution.docx' },
           { nodeId: '03-02', nodeText: 'Global Water, Sanitation, & Hygiene.docx' },
           { nodeId: '03-03', nodeText: 'Global Warming.ppt' },
           { nodeId: '03-04', nodeText: 'Social Network.pdf' },
           { nodeId: '03-05', nodeText: 'Youth Empowerment.pdf' },
       ]
   }
 ];
 export default {
   name: 'App',
   components: {
     'ejs-dropdowntree' : DropDownTreeComponent
   },
   data() {
     return {
       fields: { dataSource: data, value: 'nodeId', text: 'nodeText', child: 'nodeChild' }
     };
   },
 };
 </script>
 <style>
   @import "../node_modules/@syncfusion/ej2-base/styles/material.css";
   @import "../node_modules/@syncfusion/ej2-inputs/styles/material.css";
   @import "../node_modules/@syncfusion/ej2-navigations/styles/material.css";
   @import "../node_modules/@syncfusion/ej2-vue-dropdowns/styles/material.css";
 </style>

Running the application

Run the application using the following command.

Copied to clipboard
npm run serve

Web server will be initiated, Open the quick start app in the browser at port localhost:8080.

Output