axios請求攔截器實現數據加載出來之前loading效果
實現思路：用CSS3寫出一個loading動畫，默認隱藏。在請求攔截器裏讓動畫顯示出來，再在響應攔截器裏隱藏動畫。
<!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>
<script src="node_modules/vue/dist/vue.min.js"></script>
<script src="node_modules/axios/dist/axios.js"></script>
<style type="text/css">
.box {
width: 100%;
padding: 3%;
box-sizing: border-box;
overflow: hidden
}
.box .loader {
width: 30%;
float: left;
height: 200px;
margin-right: 3%;
box-sizing: border-box;
display: flex;
align-items: center;
justify-content: center
}
@-webkit-keyframes loading-3 {
50% {
transform: scale(.4);
opacity: .3
}
100% {
transform: scale(1);
opacity: 1
}
}
.loading-3 {
position: relative
}
.loading-3 i {
display: block;
width: 15px;
height: 15px;
border-radius: 50%;
background-color: #333;
position: absolute
}
.loading-3 i:nth-child(1) {
top: 25px;
left: 0;
-webkit-animation: loading-3 1s ease 0s infinite
}
.loading-3 i:nth-child(2) {
top: 17px;
left: 17px;
-webkit-animation: loading-3 1s ease -.12s infinite
}
.loading-3 i:nth-child(3) {
top: 0;
left: 25px;
-webkit-animation: loading-3 1s ease -.24s infinite
}
.loading-3 i:nth-child(4) {
top: -17px;
left: 17px;
-webkit-animation: loading-3 1s ease -.36s infinite
}
.loading-3 i:nth-child(5) {
top: -25px;
left: 0;
-webkit-animation: loading-3 1s ease -.48s infinite
}
.loading-3 i:nth-child(6) {
top: -17px;
left: -17px;
-webkit-animation: loading-3 1s ease -.6s infinite
}
.loading-3 i:nth-child(7) {
top: 0;
left: -25px;
-webkit-animation: loading-3 1s ease -.72s infinite
}
.loading-3 i:nth-child(8) {
top: 17px;
left: -17px;
-webkit-animation: loading-3 1s ease -.84s infinite
}
</style>
</head>
<body>
<div id="app">
<button @click="handler">按鈕</button>
<h1>這是請求回來的數據{{msg}}</h1>
<div class="box" v-show="isShow">
<div class="loader">
<div class="loading-3">
<i></i>
<i></i>
<i></i>
<i></i>
<i></i>
<i></i>
<i></i>
<i></i>
</div>
</div>
</div>
</div>
<script>
new Vue({
el : "#app",
data(){
return {
msg : "",
isShow : false
}
},
methods : {
handler(){
// 添加請求攔截器
axios.interceptors.request.use((config)=>{
// 在發送請求之前做些什麼
console.log(config);
this.isShow = true
return config;
}, function (error) {
// 對請求錯誤做些什麼
return Promise.reject(error);
});
// 添加響應攔截器
axios.interceptors.response.use((response)=> {
// 對響應數據做點什麼
console.log(response);
this.isShow = false
return response;
}, function (error) {
// 對響應錯誤做點什麼
return Promise.reject(error);
});
axios.get("xxx.com/1/report/index")
.then((res) => {
console.log(res.data);
this.msg = res.data[0].title
}).catch((err) => {
});
}
}
})
</script>
</body>
</html>