文章目录
- vue常用指令
- 01 vue-helloworld.html
- 02 v-if与v-show.html
- 03 v-on.html
- 04 v-for.html
- 05 v-bind.html
- 06 v-model.html
- vue的生命周期
- vue组件化开发思想
- 使用vue脚手架进行模块化开发
- index.html
- main.js
- App.vue
- Hello.vue
- index.js
Vue官方文档
https://cn.vuejs.org/
Vue开源项目汇总
https://github.com/opendigg/awesome-github-vue
Vue.js中文社区
https://www.vue-js.com/
https://webpack.docschina.org/
https://vuejs-templates.github.io/webpack
npm install vue@2.6.12
vue常用指令
01 vue-helloworld.html
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><div id="app"><!--获取vue对象中的data里面的值--><input type="text" v-model="num"/><button v-on:click="num++">点赞</button><button v-on:click="cancle">取消</button><h1>{{name}}，开发好用，有{{num}}个开发者购买</h1></div>
</body><script src="./node_modules/vue/dist/vue.js"></script><script>let vm = new Vue({el: "#app",//绑定元素data: {//封装数据name: "macPro",num: 1},methods: {//封装方法cancle(){this.num --;}},});
</script></html>
02 v-if与v-show.html
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><div id="app"><!-- 获取vue对象中data里的数据 --><p v-if="isShow">我是v-if数据</p><p v-show="isShow">我是v-show数据</p></div><!-- 引入vue.js文件 --><script src="../node_modules/vue/dist/vue.js"></script><script>let vm = new Vue({el: '#app',data: {isShow: false}});</script>
</body>
</html>
03 v-on.html
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><div id="app"><button v-on:click="count++">增加1</button><!-- 对v-on指令，可以使用 @符号替代--><button @click="count++">增加1</button><!-- 调用add方法，当前count值+1--><button @click="add">增加1</button><!-- 调用total方法，传入当前的count值--><button @click="total(count)">执行total方法</button><!-- 点击回调只会触发一次--><button @click.once="doThis">只会触发一次</button><p>上面的按钮总被点击了{{count}}次</p></div>
</body>
<!-- 引入vue.js文件 -->
<script src="../node_modules/vue/dist/vue.js"></script>
<script>let vm = new Vue({el: '#app',data:{count:0},methods: {add:function(){this.count++;},total:function(num){console.log("累计点击次数"+num);console.log("total方法执行了");},doThis:function(){console.log("doThis方法执行了，只能执行一次");}}});
</script>
</html>
04 v-for.html
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><div id="app"><p v-for="(item, index) in list">{{item}}----{{index}}</p><p v-for="person in persons">{{person.name}} --- {{person.age}} --- {{person.gender}}</p></div>
</body>
<!-- 引入vue.js文件--><script src="../node_modules/vue/dist/vue.js"></script><script>new Vue({el:'#app',data:{list:['迪丽热巴','古力娜扎','欧阳娜娜'],persons:[{name:'老王',age:38,gender:'男'},{name:'热巴',age:26,gender:'女'}]}});</script>
</html>
05 v-bind.html
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><div id="app"><font size="5" v-bind:color="color1">拼多多</font><font size="5" :color="color2">京东</font><hr><a :href="'https://'+url">跳转网站</a></div>
</body>
<!-- 引入vue.js文件--><script src="../node_modules/vue/dist/vue.js"></script>
<script>let vm = new Vue({el:'#app',data:{color1: 'blue',color2: 'red',url:'www.jd.com'}});
</script>
</html>
06 v-model.html
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><div id="app">用户名:<input type="text" id="username" v-model="user.username"><br>密 码:<input type="password" id="password" v-model="user.password"><br><input type="button" @click="func" value="提交数据"></div>
</body>
<!-- 加入vue.js文件--><script src="../node_modules/vue/dist/vue.js"></script><script>let vm = new Vue({el: '#app',data: {user: {username:'',password:''}},methods: {func(){console.log(this.user.username,this.user.password);//对数据的值 再次赋值进行更新this.user.username="tom123";this.user.password="456"}}});</script>
</html>
vue的生命周期
vue⽣命周期可以分为⼋个阶段，分别是：
beforeCreate（创建前）、created（创建后）、beforeMount(载⼊前)、mounted（载⼊后）、
beforeUpdate（更新前）、updated（更新后）、beforeDestroy（销毁前）、destroyed（销毁后）
如果想在⻚⾯加载完毕后就要执⾏⼀些操作的话，可以使⽤created和mounted钩⼦函数
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><div id="app">{{message}}</div><script src="./node_modules/vue/dist/vue.js"></script><script>const vm = new Vue({el: '#app',data: {message: 'Vue的⽣命周期'},beforeCreate: function () {console.group('------beforeCreate创建前状态------');console.log("%c%s", "color:red", "el : " + this.$el);//undefinedconsole.log("%c%s", "color:red", "data : " +this.$data); //undefinedconsole.log("%c%s", "color:red", "message: " +this.message);//undefined},created: function () {console.group('------created创建完毕状态------');console.log("%c%s", "color:red", "el : " + this.$el);//undefinedconsole.log("%c%s", "color:red", "data : " +this.$data); //已被初始化console.log("%c%s", "color:red", "message: " +this.message); //已被初始化},beforeMount: function () {console.group('------beforeMount挂载前状态------');console.log("%c%s", "color:red", "el : " +(this.$el)); //已被初始化console.log(this.$el);console.log("%c%s", "color:red", "data : " +this.$data); //已被初始化 console.log("%c%s", "color:red", "message: " +this.message); //已被初始化 },mounted: function () {console.group('------mounted 挂载结束状态------');console.log("%c%s", "color:red", "el : " + this.$el);//已被初始化console.log(this.$el);console.log("%c%s", "color:red", "data : " +this.$data); //已被初始化console.log("%c%s", "color:red", "message: " +this.message); //已被初始化},beforeUpdate: function () {console.group('beforeUpdate 更新前状态===============》');console.log("%c%s", "color:red", "el : " + this.$el);console.log(this.$el);console.log("%c%s", "color:red", "data : " +this.$data);console.log("%c%s", "color:red", "message: " +this.message);},updated: function () {console.group('updated 更新完成状态===============》');console.log("%c%s", "color:red", "el : " + this.$el);console.log(this.$el);console.log("%c%s", "color:red", "data : " +this.$data);console.log("%c%s", "color:red", "message: " +this.message);},beforeDestroy: function () {console.group('beforeDestroy 销毁前状态===============》');console.log("%c%s", "color:red", "el : " + this.$el);console.log(this.$el);console.log("%c%s", "color:red", "data : " +this.$data);console.log("%c%s", "color:red", "message: " +this.message);},destroyed: function () {console.group('destroyed 销毁完成状态===============》');console.log("%c%s", "color:red", "el : " + this.$el);console.log(this.$el);console.log("%c%s", "color:red", "data : " +this.$data);console.log("%c%s", "color:red", "message: " +this.message)}})// 设置data中message数据值//vm.message = "good...";// 销毁Vue对象//vm.$destroy();</script>
</body></html>
vue组件化开发思想
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><div id="app"><button v-on:click="count++">投币了{{count}}次</button><praise-button></praise-button><praise-button></praise-button><collect-button></collect-button><collect-button></collect-button></div>
</body><!-- 引入vue.js文件--><script src="./node_modules/vue/dist/vue.js"></script><script>//1.VUE全局声明一个组件Vue.component("praise-button",{template:'<button v-on:click="count++">点赞了{{count}}次</button>',data() {return {count:1}}});//2.VUE局部声明一个组件const collectButton = {template:'<button v-on:click="count++">收藏了{{count}}次-----</button>',data() {return {count:1}}}let vm = new Vue({el: '#app',data:{count:1},components:{//声明所定义的局部组件'collect-button':collectButton}});</script>
</html>
使用vue脚手架进行模块化开发
全局安装webpack依赖
npm install webpack -g
全局安装vue脚手架
npm install -g @vue/cli-init
创建⼀个⽂件夹在该路径下执⾏
vue init webpack my-project
运行项目
npm install
npm run dev
访问
http://localhost:8080
index.html
<!DOCTYPE html>
<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1.0"><title>my-project</title></head><body><div id="app"></div><!-- built files will be auto injected --></body>
</html>main.js
// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'Vue.config.productionTip = false/* eslint-disable no-new */
new Vue({el: '#app',router,components: { App },template: '<App/>'
})App.vue
<template><div id="app"><img src="./assets/logo.png"><!--使用router-link组件来导航通过传入'to'属性指定链接<router-link>默认会被渲染成一个<a>标签--><router-link to="/">首页</router-link><router-link to="/Hello">去Hello</router-link><router-view/></div>
</template><script>
export default {name: 'App'
}
</script><style>
#app {font-family: 'Avenir', Helvetica, Arial, sans-serif;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: grayscale;text-align: center;color: #2c3e50;margin-top: 60px;
}
</style>
Hello.vue
<template><div><h1>你好，hello，{{name}}</h1></div>
</template><script>
export default {data() {return {name: 'vue'}}
}
</script><style></style>index.js
import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
import Hello from '@/components/Hello'Vue.use(Router)export default new Router({routes: [{path: '/',name: 'HelloWorld',component: HelloWorld},{path: '/Hello',name: 'Hello',component: Hello}]
})