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UmaMaheswariChandraboseUmaMaheswariChandrabose
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Merge pull request #1 from subaa1492/master
 Create a Cascading ComboBox Using Vue ComboBox
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‎README.md‎

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# create-cascading-combo-box-using-vue-combo-box
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# Create a Cascading ComboBox Using Vue ComboBox
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Get a quick overview on how to create a Cascading ComboBox using Vue ComboBox of Syncfusion. You will learn how to add a series of Syncfusion Vue ComboBox to the Vue application. Also, you will see how to populate the data source of second ComboBox based on the value selected from the first ComboBox.
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Example:https://ej2.syncfusion.com/vue/demos/#/material/combo-box/cascading.html
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Documentation:https://ej2.syncfusion.com/vue/documentation/combo-box/how-to/cascading
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## Project pre-requisites
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Make sure that you have the compatible versions of Node and Vue-Cli in your machine before starting to work on this project.
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## How to run this application?
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To run this application, you need to first clone the `create-a-cascading-combo-box-using-vue-combo-box` repository and then navigate to its appropriate path where it has been located in your system.
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To do so, open the command prompt and run the below commands one after the other.
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```
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git clone https://github.com/SyncfusionExamples/create-a-cascading-combo-box-using-vue-combo-box combobox-component
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cd combobox-component
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```
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## Installing
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Once done with downloading, next you need to install the necessary packages required to run this application locally. The `npm install` command will install all the needed Vue packages into your current project and to do so, run the below command.
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```
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npm install
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```
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## Running on development server
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Run `npm run serve` command for a dev server. Navigate to `http://localhost:8080/`. The app will automatically reload if you change any of the source files.
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## Further help
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To get more help on the vue CLI use go check out the [Vue-Cli README](https://github.com/vuejs/vue-cli/blob/master/README.md).

‎babel.config.js‎

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module.exports = {
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presets: [
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'@vue/cli-plugin-babel/preset'
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]
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}

‎package.json‎

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{
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"name": "combo-box",
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"version": "0.1.0",
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"private": true,
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"scripts": {
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"serve": "vue-cli-service serve",
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"build": "vue-cli-service build",
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"lint": "vue-cli-service lint"
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},
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"dependencies": {
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"@syncfusion/ej2-vue-dropdowns": "^17.3.27",
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"core-js": "^3.3.2",
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"vue": "^2.6.10"
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},
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"devDependencies": {
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"@vue/cli-plugin-babel": "^4.0.0",
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"@vue/cli-plugin-eslint": "^4.0.0",
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"@vue/cli-service": "^4.0.0",
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"babel-eslint": "^10.0.3",
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"eslint": "^5.16.0",
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"eslint-plugin-vue": "^5.0.0",
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"vue-template-compiler": "^2.6.10"
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},
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"eslintConfig": {
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"root": true,
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"env": {
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"node": true
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},
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"extends": [
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"plugin:vue/essential",
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"eslint:recommended"
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],
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"rules": {},
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"parserOptions": {
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"parser": "babel-eslint"
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}
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},
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"postcss": {
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"plugins": {
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"autoprefixer": {}
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}
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},
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"browserslist": [
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"> 1%",
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"last 2 versions"
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]
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}

‎public/favicon.ico‎

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‎public/index.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width,initial-scale=1.0">
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<link rel="icon" href="<%= BASE_URL %>favicon.ico">
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<title>combo-box</title>
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</head>
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<body>
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<noscript>
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<strong>We're sorry but combo-box doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
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</noscript>
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<div id="app"></div>
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<!-- built files will be auto injected -->
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</body>
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</html>

‎src/App.vue‎

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<template>
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<div style="margin:10% 40%; width:250px;">
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<div>
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<ejs-combobox :dataSource='dataItem' :fields='dataFields'
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placeholder='Select a country' :change='onCountryChange'
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ref='comboboxInstance'>
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</ejs-combobox>
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</div>
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<div style="padding-top:20px;">
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<ejs-combobox :dataSource='stateDataItem' :fields='stateDataFields'
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placeholder='Select a state' :enabled='enableCombobox'
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:query='childDataQuery'>
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</ejs-combobox>
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</div>
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</div>
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</template>
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<script>
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import Vue from "vue";
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import { ComboBoxPlugin} from '@syncfusion/ej2-vue-dropdowns';
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import { Query } from "@syncfusion/ej2-data";
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Vue.use(ComboBoxPlugin);
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export default Vue.extend({
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data: function() {
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return {
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enableCombobox: false,
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childDataQuery: null,
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dataItem: [
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{ CountryName: 'United States', CountryId: '1' },
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{ CountryName: 'Australia', CountryId: '2' }
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],
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dataFields: { text: 'CountryName', value: 'CountryId' },
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stateDataItem: [
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{ StateName: 'New York', StateId: '101', CountryId: '1' },
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{ StateName: 'Virginia ', StateId: '102', CountryId: '1' },
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{ StateName: 'Tasmania ', StateId: '105', CountryId: '2' }
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],
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stateDataFields: { text: 'StateName', value: 'StateId'},
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};
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},
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methods: {
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onCountryChange: function(args) {
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this.enableCombobox = true;
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this.childDataQuery = new Query().where('CountryId', 'equal', args.value);
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}
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}
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});
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</script>
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<style>
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@import url(https://cdn.syncfusion.com/ej2/material.css);
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</style>

‎src/assets/logo.png‎

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‎src/components/HelloWorld.vue‎

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<template>
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<div class="hello">
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<h1>{{ msg }}</h1>
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<p>
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For a guide and recipes on how to configure / customize this project,<br>
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check out the
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<a href="https://cli.vuejs.org" target="_blank" rel="noopener">vue-cli documentation</a>.
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</p>
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<h3>Installed CLI Plugins</h3>
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<ul>
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<li><a href="https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-babel" target="_blank" rel="noopener">babel</a></li>
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<li><a href="https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-eslint" target="_blank" rel="noopener">eslint</a></li>
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</ul>
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<h3>Essential Links</h3>
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<ul>
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<li><a href="https://vuejs.org" target="_blank" rel="noopener">Core Docs</a></li>
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<li><a href="https://forum.vuejs.org" target="_blank" rel="noopener">Forum</a></li>
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<li><a href="https://chat.vuejs.org" target="_blank" rel="noopener">Community Chat</a></li>
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<li><a href="https://twitter.com/vuejs" target="_blank" rel="noopener">Twitter</a></li>
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<li><a href="https://news.vuejs.org" target="_blank" rel="noopener">News</a></li>
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</ul>
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<h3>Ecosystem</h3>
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<ul>
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<li><a href="https://router.vuejs.org" target="_blank" rel="noopener">vue-router</a></li>
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<li><a href="https://vuex.vuejs.org" target="_blank" rel="noopener">vuex</a></li>
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<li><a href="https://github.com/vuejs/vue-devtools#vue-devtools" target="_blank" rel="noopener">vue-devtools</a></li>
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<li><a href="https://vue-loader.vuejs.org" target="_blank" rel="noopener">vue-loader</a></li>
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<li><a href="https://github.com/vuejs/awesome-vue" target="_blank" rel="noopener">awesome-vue</a></li>
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</ul>
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</div>
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</template>
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<script>
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export default {
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name: 'HelloWorld',
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props: {
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msg: String
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}
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}
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</script>
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<!-- Add "scoped" attribute to limit CSS to this component only -->
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<style scoped>
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h3 {
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margin: 40px 0 0;
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}
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ul {
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list-style-type: none;
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padding: 0;
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}
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li {
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display: inline-block;
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margin: 0 10px;
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}
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a {
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color: #42b983;
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}
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</style>

‎src/main.js‎

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import Vue from 'vue'
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import App from './App.vue'
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Vue.config.productionTip = false
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new Vue({
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render: h => h(App),
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}).$mount('#app')

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