标签:function Vue console 入门 app 案例 data response log
第一个vue程序
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Vue基础</title>
</head>
<body>
<div id="app">
{{ message }}
</div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
message:" 你好 小黑! "
}
})
</script>
</body>
</html>
v-text 指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>v-text指令</title>
</head>
<body>
<div id="app">
<h2 v-text="message+'!'">深圳</h2>
<h2 v-text="info+'!'">深圳</h2>
<h2>{{ message +'!'}}深圳</h2>
</div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
message:"黑马程序员!!!",
info:"前端与移动教研部"
}
})
</script>
</body>
</html>
运行结果:
v-html 指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>v-html指令</title>
</head>
<body>
<div id="app"></div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
content:"黑马程序员"
}
})
</script>
</body>
</html>
v-on 指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>v-on</title>
</head>
<body>
<div id="app">
<input type="button" value="点击" @click="doIt(666,'老铁')">
<input type="text" @keyup.enter="sayHi">
</div>
<!-- 1.开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
methods: {
doIt:function(p1,p2){
console.log("做it");
console.log(p1);
console.log(p2);
},
sayHi:function(){
alert("吃了没");
}
},
})
</script>
</body>
</html>
小案例1:计数器
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
<style>
#app {
width: 480px;
height: 100px;
margin: 200px auto;
}
.input-num {
margin-top: 20px;
height: 100%;
display: flex;
border-radius: 10px;
overflow: hidden;
box-shadow: 0 0 4px black;
}
.input-num button {
width: 150px;
height: 100%;
font-size: 40px;
color: gray;
cursor: pointer;
border: none;
outline: none;
}
.input-num span {
height: 100%;
font-size: 40px;
flex: 1;
text-align: center;
line-height: 100px;
}
</style>
</head>
<body>
<div id="app">
<img src="http://www.itheima.com/images/logo.png" alt="" />
<!-- 计数器 -->
<div class="input-num">
<button @click="sub"> - </button>
<span>{{ num }}</span>
<button @click="add"> + </button>
</div>
</div>
</body>
</html>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<!-- 编码 -->
<script>
/*
1. data中定义num属性,类型是数字,渲染到2个按钮中间
2. 减号绑定点击事件,对应的方法名叫sub,大于0之前递减
3. 加号绑定点击事件,对应的方法名叫add,小于0之前累加
*/
// 创建Vue实例
var app = new Vue({
el: "#app",
data: {
// 修改的数字
num:1
},
methods: {
// 减
sub:function(){
// console.log("sub");
// 递减
if(this.num>0){
this.num--;
}else{
alert("别点啦,太小啦!");
}
},
// 加
add:function(){
// console.log("add");
// 累加
if(this.num<10){
this.num++;
}else{
alert("别点啦,太大啦!");
}
}
}
});
</script>
v-show 指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>v-show指令</title>
</head>
<body>
<div id="app">
<input type="button" value="切换显示状态" @click="changeIsShow">
<input type="button" value="累加年龄" @click="addAge">
<img v-show="isShow" src="./img/monkey.gif" alt="">
<img v-show="age>=18" src="./img/monkey.gif" alt="">
</div>
<!-- 1.开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
isShow:false,
age:17
},
methods: {
changeIsShow:function(){
this.isShow = !this.isShow;
},
addAge:function(){
this.age++;
}
},
})
</script>
</body>
</html>
v-if 指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>v-if指令</title>
</head>
<body>
<div id="app">
<input type="button" value="切换显示" @click="toggleIsShow">
<p v-if="isShow">黑马程序员</p>
<p v-show="isShow">黑马程序员 - v-show修饰</p>
<h2 v-if="temperature>=35">热死啦</h2>
</div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
isShow:false,
temperature:20
},
methods: {
toggleIsShow:function(){
this.isShow = !this.isShow;
}
},
})
</script>
</body>
</html>
v-bind 指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>v-bind指令</title>
<style>
.active{
border: 1px solid red;
}
</style>
</head>
<body>
<div id="app">
<img v-bind:src="imgSrc" alt="">
<br>
<img :src="imgSrc" alt="" :title="imgTitle+'!!!'" :class="isActive?'active':''" @click="toggleActive">
<br>
<img :src="imgSrc" alt="" :title="imgTitle+'!!!'" :class="{active:isActive}" @click="toggleActive">
</div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
imgSrc:"http://www.itheima.com/images/logo.png",
imgTitle:"黑马程序员",
isActive:false
},
methods: {
toggleActive:function(){
this.isActive = !this.isActive;
}
},
})
</script>
</body>
</html>
小案例2:图片切换
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
<link rel="stylesheet" href="./css/index.css" />
</head>
<body>
<div id="mask">
<div class="center">
<img :src="imgList[index]" alt="" />
<a
href="javascript:void(0)"
@click="prev"
class="left"
v-show="index>0"
>
<img src="./images/prev.png" alt="" />
</a>
<a
href="javascript:void(0)"
@click="next"
class="right"
v-show="index<imgList.length-1"
>
<img src="./images/next.png" alt="" />
</a>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
const app = new Vue({
el: "#mask",
data: {
imgList: [
"./images/00.jpg",
"./images/01.jpg",
"./images/02.jpg",
"./images/03.jpg",
"./images/04.jpg",
"./images/05.jpg",
"./images/06.jpg",
"./images/07.jpg",
"./images/08.jpg",
"./images/09.jpg",
"./images/10.jpg",
],
index: 0
},
methods: {
// 上一张
prev() {
this.index--;
},
// 下一张
next() {
this.index++;
}
}
});
</script>
</body>
</html>
v-for 指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>v-for指令</title>
</head>
<body>
<div id="app">
<input type="button" value="添加数据" @click="add">
<input type="button" value="移除数据" @click="remove">
<ul>
<li v-for="(it,index) in arr">
{{ index+1 }}黑马程序员校区:{{ it }}
</li>
</ul>
<h2 v-for="item in vegetables" v-bind:title="item.name">
{{ item.name }}
</h2>
</div>
<!-- 1.开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
arr:["北京","上海","广州","深圳"],
vegetables:[
{name:"西兰花炒蛋"},
{name:"蛋炒西蓝花"}
]
},
methods: {
add:function(){
this.vegetables.push({ name:"花菜炒蛋" });
},
remove:function(){
this.vegetables.shift();
}
},
})
</script>
</body>
</html>
v-model 指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>v-model指令</title>
</head>
<body>
<div id="app">
<input type="button" value="修改message" @click="setM">
<input type="text" v-model="message" @keyup.enter="getM">
<h2>{{ message }}</h2>
</div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
message:"黑马程序员"
},
methods: {
getM:function(){
alert(this.message);
},
setM:function(){
this.message ="酷丁鱼";
}
},
})
</script>
</body>
</html>
小案例3:记事本
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<title>小黑记事本</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<meta name="robots" content="noindex, nofollow" />
<meta name="googlebot" content="noindex, nofollow" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" type="text/css" href="./css/index.css" />
</head>
<body>
<!-- 主体区域 -->
<section id="todoapp">
<!-- 输入框 -->
<header class="header">
<h1>小黑记事本</h1>
<input v-model="inputValue" @keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务"
class="new-todo" />
</header>
<!-- 列表区域 -->
<section class="main">
<ul class="todo-list">
<li class="todo" v-for="(item,index) in list">
<div class="view">
<span class="index">{{ index+1 }}.</span>
<label>{{ item }}</label>
<button class="destroy" @click="remove(index)"></button>
</div>
</li>
</ul>
</section>
<!-- 统计和清空 -->
<footer class="footer" v-show="list.length!=0">
<span class="todo-count" v-if="list.length!=0">
<strong>{{ list.length }}</strong> items left
</span>
<button v-show="list.length!=0" class="clear-completed" @click="clear">
Clear
</button>
</footer>
</section>
<!-- 底部 -->
<footer class="info">
<p>
<a href="http://www.itheima.com/"><img src="./img/black.png" alt="" /></a>
</p>
</footer>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el: "#todoapp",
data: {
list: ["写代码", "吃饭饭", "睡觉觉"],
inputValue: "好好学习,天天向上"
},
methods: {
add: function () {
this.list.push(this.inputValue);
},
remove: function (index) {
console.log("删除");
console.log(index);
this.list.splice(index, 1);
},
clear: function () {
this.list = [];
}
},
})
</script>
</body>
</html>
axios基本使用
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>axios基本使用</title>
</head>
<body>
<input type="button" value="get请求" class="get">
<input type="button" value="post请求" class="post">
<!-- 官网提供的 axios 在线地址 -->
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
/*
接口1:随机笑话
请求地址:https://autumnfish.cn/api/joke/list
请求方法:get
请求参数:num(笑话条数,数字)
响应内容:随机笑话
*/
document.querySelector(".get").onclick = function () {
axios.get("https://autumnfish.cn/api/joke/list?num=6")
//axios.get("https://autumnfish.cn/api/joke/list1234?num=6")
.then(function (response) {
console.log(response);
},function(err){
console.log(err);
})
}
/*
接口2:用户注册
请求地址:https://autumnfish.cn/api/user/reg
请求方法:post
请求参数:username(用户名,字符串)
响应内容:注册成功或失败
*/
document.querySelector(".post").onclick = function () {
axios.post("https://autumnfish.cn/api/user/reg",{username:"盐焗西兰花"})
.then(function(response){
console.log(response);
console.log(this.skill);
},function (err) {
console.log(err);
})
}
</script>
</body>
</html>
axios+vue
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>axios+vue</title>
</head>
<body>
<div id="app">
<input type="button" value="获取笑话" @click="getJoke">
<p> {{ joke }}</p>
</div>
<!-- 官网提供的 axios 在线地址 -->
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
/*
接口:随机获取一条笑话
请求地址:https://autumnfish.cn/api/joke
请求方法:get
请求参数:无
响应内容:随机笑话
*/
var app = new Vue({
el:"#app",
data:{
joke:"很好笑的笑话"
},
methods: {
getJoke:function(){
// console.log(this.joke);
var that = this;
axios.get("https://autumnfish.cn/api/joke").then(function(response){
// console.log(response)
console.log(response.data);
// console.log(this.joke);
that.joke = response.data;
},function (err) { })
}
},
})
</script>
</body>
</html>
小案例4:天气预报
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>天知道</title>
<link rel="stylesheet" href="css/reset.css" />
<link rel="stylesheet" href="css/index.css" />
</head>
<body>
<div class="wrap" id="app">
<div class="search_form">
<div class="logo"><img src="img/logo.png" alt="logo" /></div>
<div class="form_group">
<input type="text" class="input_txt" placeholder="请输入查询的天气" v-model="city" @keyup.enter="queryWeather" />
<button class="input_sub" @click="queryWeather">
搜 索
</button>
</div>
<div class="hotkey">
<!-- <a href="javascript:;" @click="clickSearch('北京')">北京</a>
<a href="javascript:;" @click="clickSearch('上海')">上海</a>
<a href="javascript:;" @click="clickSearch('广州')">广州</a>
<a href="javascript:;" @click="clickSearch('深圳')">深圳</a> -->
<a href="javascript:;" v-for="city in hotCitys" @click="clickSearch(city)">{{ city }}</a>
</div>
</div>
<ul class="weather_list">
<li v-for="(item,index) in forecastList" :key="item.date" :style="{transitionDelay:index*100+'ms'}">
<div class="info_type">
<span class="iconfont">{{ item.type }}</span>
</div>
<div class="info_temp">
<b>{{ item.low}}</b>
~
<b>{{ item.high}}</b>
</div>
<div class="info_date">
<span>{{ item.date }}</span>
</div>
</li>
</ul>
</div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<!-- 官网提供的 axios 在线地址 -->
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
new Vue({
el: "#app",
data: {
city: "武汉",
forecastList: [],
hotCitys: ["北京", "上海", "广州", "深圳"]
},
methods: {
queryWeather() {
this.forecastList = [];
axios
.get(`http://wthrcdn.etouch.cn/weather_mini?city=${this.city}`)
.then(res => {
console.log(res);
this.forecastList = res.data.data.forecast;
})
.catch(err => {
console.log(err);
})
.finally(() => { });
},
clickSearch(city) {
this.city = city;
this.queryWeather();
}
}
});
</script>
</body>
</html>
- 回车查询:
按下回车(v-on.enter)
查询数据 (axios 接口 v-model)
渲染数据 (v-for 数据 that) - 点击查询:
点击城市(v-on 自定参数)
查询数据(this.方法())
渲染数据
小案例5:音乐播放器
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
<!-- 样式 -->
<link rel="stylesheet" href="./css/index.css">
</head>
<body>
<div class="wrap">
<div class="play_wrap" id="player">
<div class="search_bar">
<img src="images/player_title.png" alt="" />
<!-- 搜索歌曲 -->
<input type="text" autocomplete="off" v-model='query' @keyup.enter="searchMusic();" />
</div>
<div class="center_con">
<!-- 搜索歌曲列表 -->
<div class='song_wrapper' ref='song_wrapper'>
<ul class="song_list">
<li v-for="item in musicList">
<!-- 点击放歌 -->
<a href="javascript:;" @click='playMusic(item.id)'></a>
<b>{{item.name}}</b>
<span>
<i @click="playMv(item.mvid)" v-if="item.mvid!=0"></i>
</span>
</li>
</ul>
<img src="images/line.png" class="switch_btn" alt="">
</div>
<!-- 歌曲信息容器 -->
<div class="player_con" :class="{playing:isPlay}">
<img src="images/player_bar.png" class="play_bar" />
<!-- 黑胶碟片 -->
<img src="images/disc.png" class="disc autoRotate" />
<img :src="coverUrl==''?'./images/cover.png':coverUrl" class="cover autoRotate" />
</div>
<!-- 评论容器 -->
<div class="comment_wrapper" ref='comment_wrapper'>
<h5 class='title'>热门留言</h5>
<div class='comment_list'>
<dl v-for="item in hotComments">
<dt>
<img :src="item.user.avatarUrl" alt="" />
</dt>
<dd class="name">{{item.user.nickname}}</dd>
<dd class="detail">
{{item.content}}
</dd>
</dl>
</div>
<img src="images/line.png" class="right_line">
</div>
</div>
<div class="audio_con">
<audio ref='audio' @play="play" @pause="pause" :src="musicUrl" controls autoplay loop class="myaudio"></audio>
</div>
<div class="video_con" v-show="showVideo">
<video ref='video' :src="mvUrl" controls="controls"></video>
<div class="mask" @click="closeMv"></div>
</div>
</div>
</div>
<!-- 开发环境版本,包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<!-- 官网提供的 axios 在线地址 -->
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script type="text/javascript">
// 设置axios的基地址
axios.defaults.baseURL = 'https://autumnfish.cn';
// axios.defaults.baseURL = 'http://localhost:3000';
// 实例化vue
var app = new Vue({
el: "#player",
data: {
// 搜索关键字
query: '',
// 歌曲列表
musicList: [],
// 歌曲url
musicUrl: '',
// 是否正在播放
isPlay: false,
// 歌曲热门评论
hotComments: [],
// 歌曲封面地址
coverUrl: '',
// 显示视频播放
showVideo: false,
// mv地址
mvUrl: ''
},
// 方法
methods: {
// 搜索歌曲
searchMusic() {
if (this.query == 0) {
return
}
axios.get('/search?keywords=' + this.query).then(response => {
// 保存内容
this.musicList = response.data.result.songs;
})
// 清空搜索
this.query = ''
},
// 播放歌曲
playMusic(musicId) {
// 获取歌曲url
axios.get('/song/url?id=' + musicId).then(response => {
// 保存歌曲url地址
this.musicUrl = response.data.data[0].url
})
// 获取歌曲热门评论
axios.get('/comment/hot?type=0&id=' + musicId).then(response => {
// console.log(response)
// 保存热门评论
this.hotComments = response.data.hotComments
})
// 获取歌曲封面
axios.get('/song/detail?ids=' + musicId).then(response => {
// console.log(response)
// 设置封面
this.coverUrl = response.data.songs[0].al.picUrl
})
},
// audio的play事件
play() {
this.isPlay = true
// 清空mv的信息
this.mvUrl = ''
},
// audio的pause事件
pause() {
this.isPlay = false
},
// 播放mv
playMv(vid) {
if (vid) {
this.showVideo = true;
// 获取mv信息
axios.get('/mv/url?id=' + vid).then(response => {
// console.log(response)
// 暂停歌曲播放
this.$refs.audio.pause()
// 获取mv地址
this.mvUrl = response.data.data.url
})
}
},
// 关闭mv界面
closeMv() {
this.showVideo = false
this.$refs.video.pause()
},
// 搜索历史记录中的歌曲
historySearch(history) {
this.query = history
this.searchMusic()
this.showHistory = false;
}
},
})
</script>
</body>
</html>
搜索音乐
播放mv
标签:function,Vue,console,入门,app,案例,data,response,log 来源: https://blog.csdn.net/weixin_44531966/article/details/117806424
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