What is asynchronous javascript

Asynchronous javascript is code who's running in the background while our main code is still executing, this kind of code is really helpful when you want request data from a server for example.

Asynchronous example

const second = () => {
    setTimeout( () => {
        console.log("The end");
    }, 2000 );
};

const first = () => {
    console.log("Hey there !");
    second();
    console.log("It's ok !");
};

first();

1. In this example we create two functions and the second will be run asynchronously because of the setTimeout function.
2. In the console the result will be first Hey there then It's ok and finally after two seconds The end.

Current errors

This is a list of the main errors that you can meet:

Note: I'm not a wizard there is maybe some issue that you notice above so fell free to open an issue in the github repo if you find a new error not mentioned above.