Js's question about async await?

created () {
  this.init()
},
methods: {
  init () {
    this.getToken()
    this.getData()
  },
  async getToken () {
    let token = await postToken()
    ...
  },
  async getData () {
    if(this.token) return "token no null"
    let data = await postData();
    ....
  }
}
The

code is roughly the same as above, and the actual runtime always says, "token no null", has already added async await to two methods that use ajax, why is it still asynchronous?

Javascript
Mar.29,2021

that's inside the getToken method and the getData method, but your init method is not.

Async/Await itself is used to handle asynchronism. After await execution, it will return

as soon as there is a result. 
function timeout(ms) {
    return new Promise((resolve) => {
        setTimeout(resolve, ms);
    });
}

async function asyncPrint(value, ms) {
    await timeout(ms);
    console.log(value);
}

asyncPrint('hello world', 50);

the above code specifies that hello world is output after 50 milliseconds.

if you want to specify its request time, the return value can set the wait time.
reference:
ES6 series articles
understands the async/await of JavaScript 

  async init () {
    await this.getToken()
    this.getData()
  },

Previous: When netty binds a port, you can only bind a public network address.

Next: What is the longest time-consuming flame from node cpu profile? I don't know how to ask the boss for an answer.

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
© 2021 CodesHelper
Advertising Contact us About us
Menu