Document
npm --version //查看npm版本
node --version //查看node版本
npm i @vue/cli -g //下载vue-cli脚手架
vue --version //查看vue版本
vue create 项目名 //创建vue项目(命令行创建)
vue ui //创建vue项目(通过图形界面进行创建)
npm --version //查看npm版本
node --version //查看node版本
npm i @vue/cli -g //下载vue-cli脚手架
vue --version //查看vue版本
vue create 项目名 //创建vue项目(命令行创建)
vue ui //创建vue项目(通过图形界面进行创建)
npm run serve 开发中使用(可以实时更新代码)
npm run build 打包代码(生成dist文件夹,上线时使用,可以直接部署到服务器上面)
如果本地要使用,可以通过 先npm i serve -g(启动静态资源服务器),再serve dist(启动指定目录下的代码)
props: {
msg: String,
count: { type: [String, Number], default: 100, required: true },
},
$emit()用于触发自定义事件
// 子传父
methods: {
child_1() {
this.childCount++;
this.$emit("child_methods", this.childCount);
},
},
基础的默认内容
{{ msg }}
props的count{{ count }}
111
{{ msg }}
props的count{{ count }}
footer的默认内容
阿斯顿
footer插槽
这里以特定位置插槽举例,子组件通过v-bing属性指令传值,父组件通过#插槽名进行接收,注意接收的是对象
{{ msg }}
props的count{{ count }}
footer的默认内容
阿斯顿
footer插槽:{{ num }}
const router = new VueRouter({
mode: 'history',
base: process.env.BASE_URL,
routes
})
mode默认为hash,兼容性更好,但切换路由时前面会带上#,列如:http://localhost:8080/#/about
mode为history时,切换路由正常显示,ie10及以上支持
http://localhost:8080/about
基础的地址
配置路由信息
Home |
About
:id(动态)
{
path: '/mine/:id',
name: 'mine',
props: true,
component: MyFirstView
}
我的组件
我的id为{{ id }}
{
path: '/mine/:id',
name: 'mine',
props: true,
component: MyFirstView,
children: [
{
path: 'good',
name: 'good',
component: GoodView
},
{
path: 'info',
name: 'info',
component: InfoView
}
]
}
我的组件
我的id为{{ id }}
点赞
详情
router:操作路由的动作
route:路由相关的数据(地址、参数)
export default {
name: 'GoodView',
created() {
setTimeout(() => {
// this.$router.push({ name: 'home' })
// 路由切换时,进行数据传递
this.$router.push({ name: 'info', query: { someData: 'good的数据' } })
}, 3000)
}
}
export default {
name: 'InfoView',
created () {
console.log(this.$route.query)
}
}
前置守卫可以用来检测用户是否登录再判断是否能跳转
router.beforeEach((to, from, next) => {
console.log('路由触发了')
next()
})
统一数据存储工具
export default new Vuex.Store({
state: {
},
getters: {
},
mutations: {
},
actions: {
},
modules: {
}
})
state () {
return {
loginStatus: '用户已登录'
}
},
console.log(this.$store.state.loginStatus)
调用时用的是commit方法
mutations: {
changeCount (state, num) {
state.count += num
console.log('mutations执行了,count值为' + state.count)
}
},
created() {
this.handler()
},
methods: {
handler() {
this.$store.commit('changeCount', 1)
this.$store.commit('changeCount', 2)
this.$store.commit('changeCount', 3)
}
}
actions: {
delayChangeCount (store, num) {
setTimeout(() => {
store.commit('changeCount', num)
}, 3000)
}
},
this.$store.dispatch('delayChangeCount', 10)
getters: {
len (state) {
console.log('getters执行了')
return state.loginStatus.length
}
}
this.$store.getters.len
不同功能需要有不同的全局处理,使用modules可以避免混乱,更好管理数据
语法:
使用:
官网:TodoMVC
npm create vue@2
cd 项目
npm i
npm run dev
todos
-
html,
body {
margin: 0;
padding: 0;
}
button {
margin: 0;
padding: 0;
border: 0;
background: none;
font-size: 100%;
vertical-align: baseline;
font-family: inherit;
font-weight: inherit;
color: inherit;
-webkit-appearance: none;
appearance: none;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
body {
font: 14px 'Helvetica Neue', Helvetica, Arial, sans-serif;
line-height: 1.4em;
background: #f5f5f5;
color: #111111;
min-width: 230px;
max-width: 550px;
margin: 0 auto;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
font-weight: 300;
}
.hidden {
display: none;
}
.todoapp {
background: #fff;
margin: 130px 0 40px 0;
position: relative;
box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 25px 50px 0 rgba(0, 0, 0, 0.1);
}
.todoapp input::-webkit-input-placeholder {
font-style: italic;
font-weight: 400;
color: rgba(0, 0, 0, 0.4);
}
.todoapp input::-moz-placeholder {
font-style: italic;
font-weight: 400;
color: rgba(0, 0, 0, 0.4);
}
.todoapp input::input-placeholder {
font-style: italic;
font-weight: 400;
color: rgba(0, 0, 0, 0.4);
}
.todoapp h1 {
position: absolute;
top: -140px;
width: 100%;
font-size: 80px;
font-weight: 200;
text-align: center;
color: #b83f45;
-webkit-text-rendering: optimizeLegibility;
-moz-text-rendering: optimizeLegibility;
text-rendering: optimizeLegibility;
}
.new-todo,
.edit {
position: relative;
margin: 0;
width: 100%;
font-size: 24px;
font-family: inherit;
font-weight: inherit;
line-height: 1.4em;
color: inherit;
padding: 6px;
border: 1px solid #999;
box-shadow: inset 0 -1px 5px 0 rgba(0, 0, 0, 0.2);
box-sizing: border-box;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
.new-todo {
padding: 16px 16px 16px 60px;
height: 65px;
border: none;
background: rgba(0, 0, 0, 0.003);
box-shadow: inset 0 -2px 1px rgba(0, 0, 0, 0.03);
}
.main {
position: relative;
z-index: 2;
border-top: 1px solid #e6e6e6;
}
.toggle-all {
width: 1px;
height: 1px;
border: none; /* Mobile Safari */
opacity: 0;
position: absolute;
right: 100%;
bottom: 100%;
}
.toggle-all + label {
display: flex;
align-items: center;
justify-content: center;
width: 45px;
height: 65px;
font-size: 0;
position: absolute;
top: -65px;
left: -0;
}
.toggle-all + label:before {
content: '❯';
display: inline-block;
font-size: 22px;
color: #949494;
padding: 10px 27px 10px 27px;
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
}
.toggle-all:checked + label:before {
color: #484848;
}
.todo-list {
margin: 0;
padding: 0;
list-style: none;
}
.todo-list li {
position: relative;
font-size: 24px;
border-bottom: 1px solid #ededed;
}
.todo-list li:last-child {
border-bottom: none;
}
.todo-list li.editing {
border-bottom: none;
padding: 0;
}
.todo-list li.editing .edit {
display: block;
width: calc(100% - 43px);
padding: 12px 16px;
margin: 0 0 0 43px;
}
.todo-list li.editing .view {
display: none;
}
.todo-list li .toggle {
text-align: center;
width: 40px;
/* auto, since non-WebKit browsers doesn't support input styling */
height: auto;
position: absolute;
top: 0;
bottom: 0;
margin: auto 0;
border: none; /* Mobile Safari */
-webkit-appearance: none;
appearance: none;
}
.todo-list li .toggle {
opacity: 0;
}
.todo-list li .toggle + label {
/*
Firefox requires `#` to be escaped - https://bugzilla.mozilla.org/show_bug.cgi?id=922433
IE and Edge requires *everything* to be escaped to render, so we do that instead of just the `#` - https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7157459/
*/
background-image: url('data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%2240%22%20height%3D%2240%22%20viewBox%3D%22-10%20-18%20100%20135%22%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2250%22%20fill%3D%22none%22%20stroke%3D%22%23949494%22%20stroke-width%3D%223%22/%3E%3C/svg%3E');
background-repeat: no-repeat;
background-position: center left;
}
.todo-list li .toggle:checked + label {
background-image: url('data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2240%22%20height%3D%2240%22%20viewBox%3D%22-10%20-18%20100%20135%22%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2250%22%20fill%3D%22none%22%20stroke%3D%22%2359A193%22%20stroke-width%3D%223%22%2F%3E%3Cpath%20fill%3D%22%233EA390%22%20d%3D%22M72%2025L42%2071%2027%2056l-4%204%2020%2020%2034-52z%22%2F%3E%3C%2Fsvg%3E');
}
.todo-list li label {
word-break: break-all;
padding: 15px 15px 15px 60px;
display: block;
line-height: 1.2;
transition: color 0.4s;
font-weight: 400;
color: #484848;
}
.todo-list li.completed label {
color: #949494;
text-decoration: line-through;
}
.todo-list li .destroy {
display: none;
position: absolute;
top: 0;
right: 10px;
bottom: 0;
width: 40px;
height: 40px;
margin: auto 0;
font-size: 30px;
color: #949494;
transition: color 0.2s ease-out;
}
.todo-list li .destroy:hover,
.todo-list li .destroy:focus {
color: #c18585;
}
.todo-list li .destroy:after {
content: '×';
display: block;
height: 100%;
line-height: 1.1;
}
.todo-list li:hover .destroy {
display: block;
}
.todo-list li .edit {
display: none;
}
.todo-list li.editing:last-child {
margin-bottom: -1px;
}
.footer {
padding: 10px 15px;
height: 20px;
text-align: center;
font-size: 15px;
border-top: 1px solid #e6e6e6;
}
.footer:before {
content: '';
position: absolute;
right: 0;
bottom: 0;
left: 0;
height: 50px;
overflow: hidden;
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2), 0 8px 0 -3px #f6f6f6,
0 9px 1px -3px rgba(0, 0, 0, 0.2), 0 16px 0 -6px #f6f6f6,
0 17px 2px -6px rgba(0, 0, 0, 0.2);
}
.todo-count {
float: left;
text-align: left;
}
.todo-count strong {
font-weight: 300;
}
.filters {
margin: 0;
padding: 0;
list-style: none;
position: absolute;
right: 0;
left: 0;
}
.filters li {
display: inline;
}
.filters li a {
color: inherit;
margin: 3px;
padding: 3px 7px;
text-decoration: none;
border: 1px solid transparent;
border-radius: 3px;
}
.filters li a:hover {
border-color: #db7676;
}
.filters li a.selected {
border-color: #ce4646;
}
.clear-completed,
html .clear-completed:active {
float: right;
position: relative;
line-height: 19px;
text-decoration: none;
cursor: pointer;
}
.clear-completed:hover {
text-decoration: underline;
}
.info {
margin: 65px auto 0;
color: #4d4d4d;
font-size: 11px;
text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
text-align: center;
}
.info p {
line-height: 1;
}
.info a {
color: inherit;
text-decoration: none;
font-weight: 400;
}
.info a:hover {
text-decoration: underline;
}
/*
Hack to remove background from Mobile Safari.
Can't use it globally since it destroys checkboxes in Firefox
*/
@media screen and (-webkit-min-device-pixel-ratio: 0) {
.toggle-all,
.todo-list li .toggle {
background: none;
}
.todo-list li .toggle {
height: 40px;
}
}
@media (max-width: 430px) {
.footer {
height: 50px;
}
.filters {
bottom: 10px;
}
}
:focus,
.toggle:focus + label,
.toggle-all:focus + label {
box-shadow: 0 0 2px 2px #cf7d7d;
outline: 0;
}