JavaScript实现请求服务端接口方法详解

var xhr = new XMLHttpRequest();
xhr.open("GET", "https://www.baidu.com/api/data", true);
xhr.onreadystatechange = function() {
    if (xhr.readyState === 4 && xhr.status === 200) {
        console.log(xhr.responseText);
    }
};
xhr.send();

fetch("https://www.baidu.com/api/data")
    .then(response => response.JSON())
    .then(data => console.log(data))
    .catch(error => console.log(error));

axios.get("https://www.baidu.com/api/data").then(response => {
    console.log(response.data);
}).catch(error => {
    console.log(error);
});

axios.post("https://www.baidu.com/api/data", {
    data: "some data"
}).then(response => {
    console.log(response.data);
}).catch(error => {
    console.log(error);
});

axios.defaults.headers.common['Authorization'] = 'Bearer your-token-here';