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Ajax – axios
简介
Ajax axios
代码演示
<html>
<head>
<title>Ajax</title>
<style>
table {
border-collapse: collapse;
}
th, td {
border: 1px solid black;
width: 50px;
text-align: center;
}
</style>
</head>
<body>
<div id = "app">
<button @click = "getdata">获取1</button>
<button @click = "getdata2">获取2</button>
<button @click = "getdata3">获取3</button>
<button @click = "clear">清空</button>
<br>
<br>
<table>
<thead>
<th>ID</th>
<th>姓名</th>
<th>性别</th>
</thead>
<tbody>
<tr v-for="emp in empList" :key = "emp.id">
<td>{{emp.id}}</td>
<td>{{emp.name}}</td>
<td>
<span v-if = "emp.gender == 1">男</span>
<span v-if = "emp.gender == 2">女</span>
</td>
</tr>
</tbody>
</table>
</div>
<!-- 引入 axios -->
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script type="module">
import { createApp, ref } from 'https://unpkg.com/vue@3/dist/vue.esm-browser.js'
createApp({
data(){
return {
empList: []
}
},
methods: {
getdata(){
// ajax axios get 请求
// .then() 是成功的回调函数
// .catch() 是失败的回调函数
axios.get("https://web-server.itheima.net/emps/list").then((res) => {
this.empList = res.data.data;
}).catch((err) => {
console.log(err);
});
},
getdata2(){
// ajax axios post 请求
// .then() 是成功的回调函数
// .catch() 是失败的回调函数
// post() 后可添加更多参数 例如 "id=1";
// axios.post(`https://web-server.itheima.net/emps/list?gender=1`,"id=1").then((res) => {
// this.empList = res.data.data;
// }).catch((err) => {
// console.log(err);
// });
axios.get(`https://web-server.itheima.net/emps/list?gender=1`).then((res) => {
this.empList = res.data.data;
}).catch((err) => {
console.log(err);
});
},
// 异步函数
async getdata3(){
// await 等待异步函数执行完毕 并将获取到的结果赋值给变量
let res = await axios.get(`https://web-server.itheima.net/emps/list?gender=2`);
this.empList = res.data.data;
},
clear(){
this.empList = [];
}
},
// ajax 生命周期
// 挂载成功到对应标签之后，会自动调用 mounted() 方法
mounted(){
this.getdata();
}
}).mount('#app')
</script>
<script>
</script>
</body>
</html>效果
