javascript class 方法中的 async/await 与内部 tpps 调用

Question

I tried to make an https call and return the body containing the data, but when I tried to print it in the console it returned undefined so I used the "promises".

 const https = require('https'); const baseUri = "https://apiv2.gofile.io/" class apiGofile { constructor(email,apikey) { this.email=email; this.apikey=apikey; } getBestServer() { return new Promise((resolve,reject)=>{ https.get(baseUri + "getServer", (res) => { let body=""; res.on("data", (data) => { body += data; }); res.on("end", () => { body = JSON.parse(body); resolve(body.data.server); }); res.on("error",(e)=>{ reject(e); }); }); }); }; } let a = new apiGofile("a","b"); a.getBestServer().then( response => console.log(response), error => console.log(error) );

is there any way to use await and async in my code?

Answer 1

You can move the following code into an asynchronous main function then call that:

async function main() {
    const a = new apiGoFile("a", "b");
    // await the promise instead of using .then
    const response = await a.getBestServer();
    console.log(response);
    // you can now use response here
}

// make sure to call the function
main();

You can read more about async/await here.

You can also make class methods async:

class Foo {
    async myMethod() {
        const a = new apiGoFile("a", "b");
        const response = await a.getBestServer();
        console.log(response);
    }
}