Difference between revisions of "Vue.js"
Jump to navigation
Jump to search
Line 18: | Line 18: | ||
*** mounted() fires when your app attaches to the DOM, a good time to fetch some data | *** mounted() fires when your app attaches to the DOM, a good time to fetch some data | ||
*** beforeDestroy() | *** beforeDestroy() | ||
− | + | ====router/index.js==== | |
− | + | * Entrypoint into Vue Router | |
+ | ====store/index.js==== | ||
+ | * Entrypoint into Vuex | ||
===Directives=== | ===Directives=== |
Revision as of 19:07, 4 June 2019
Contents
Vue.js
Files
index.html
- has
<div id="app"
and script includes main.js
main.js
- contains instantiation of Vue instance
App.vue
- top level component into which we compose other components
- App-level arg array contains:
const app = new Vue({
- el: "#app" - el stands for element, maps back to the div in index.html
- data
- computed - contains methods. One-off computations in our dataset. Get access to the data using $this
- filters - also contains methods that take arguments. Pass arguments to filter method inside the mustache using the pipe separator
- methods - can take an argument
- lifecycle methods
- beforeCreate
- mounted() fires when your app attaches to the DOM, a good time to fetch some data
- beforeDestroy()
router/index.js
- Entrypoint into Vue Router
store/index.js
- Entrypoint into Vuex
Directives
- directive inside HTML tags start with v-
v-bind:____="someDataStoreObj
- bind keeps something up-to-date with some data store propertyv-if="varName"
v-for:"i in datastoreobj"
v-on:click="someMethod"
- binds a function to button<input v-model="message">
- direct two-way binding between input and app state
Component
- How you create a new HTML tag, you must register them
- Template can only return one top level element, if you need to return two, wrap within a div.
- Computed property - double mustache inside the component template
- Component scaffold has template, script, and style
export default {
- props: ['id, 'age', 'weight] }
- name = "component_name"
- components: [ subcomponent1, subcomponent2 ]
<style scoped>
Vue Instance
Vuex
- Single state tree - single source of truth
- State
- Getters
- Actions - called from components to commit a mutation
- Mutations
- Modules
Vue Router
- Single Page App (SPA)
- In main.js, import the router directory, and add router to the list of properties inside
new Vue
declaration - In App.vue, add
<router-view/>
tag.- router link is an a tag:
<router-link to="pathfromindexjs">Page Name</router-link>
- router link is an a tag:
- In router/index.js
- After imports, add
Vue.use(Router)
export default new Router( { routes: [ {path: '/', name: 'Hello', component: HelloWorld} ]
- Map a route to a property
export default new Router( { routes: [ {path: '/:prop1/:prop2/:prop3', name: 'Hello', component: HelloWorld, props: true} ]
- After imports, add
Vue CLI
npm install -g @vue/cli
vue --version
vue ui
- Create new project, include vuex and vue router components
- Run Project task 1: serve
- Run Project task 2 (build):
2018 Tech Stack
- container
- nginx
- node.js
- TypeScript lang
- React & webpack + TypeScript