一、什么是Ajax
<!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>原生Ajax</title>
</head>
<body><input type="button" value="获取数据" onclick="getData()"><div id="div1"></div></body>
<script>function getData(){//1. 创建XMLHttpRequest var xmlHttpRequest = new XMLHttpRequest();//2. 发送异步请求xmlHttpRequest.open('GET','http://yapi.smart-xwork.cn/mock/169327/emp/list');xmlHttpRequest.send();//发送请求//3. 获取服务响应数据xmlHttpRequest.onreadystatechange = function(){if(xmlHttpRequest.readyState == 4 && xmlHttpRequest.status == 200){document.getElementById('div1').innerHTML = xmlHttpRequest.responseText;}}}
</script>
</html>
二、Axios
<!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>Ajax-Axios</title><script src="js/axios-0.18.0.js"></script>
</head>
<body><input type="button" value="获取数据GET" onclick="get()"><input type="button" value="删除数据POST" onclick="post()"></body>
<script>function get(){//通过axios发送异步请求-get// axios({// method: "get",// url: "http://yapi.smart-xwork.cn/mock/169327/emp/list"// }).then(result => {// console.log(result.data);// })axios.get("http://yapi.smart-xwork.cn/mock/169327/emp/list").then(result => {console.log(result.data);})}function post(){//通过axios发送异步请求-post// axios({// method: "post",// url: "http://yapi.smart-xwork.cn/mock/169327/emp/deleteById",// data: "id=1"// }).then(result => {// console.log(result.data);// })axios.post("http://yapi.smart-xwork.cn/mock/169327/emp/deleteById","id=1").then(result => {console.log(result.data);})}
</script>
</html>
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