Tránh viết biến có phạm vi global

Không nên

    var map = document.querySelector("#my-map");
    map.style.height = "600px";
Nên
!function(){
    var map = document.querySelector("#my-map");
    map.style.height = "600px";
}()

Có thể bạn đã miss một số snippets code

using javascript callback style error handling

Rest Operator for Objects

Now we can use rest on the properties of an Object. It allows us to explicitly extract certain named variables, and assign any uncalled variables into a catchall Object.

try/catch es10

An update for developer convience allows the use of try/catch without an explicit e Error reference in the catch call.

encode/decode base64 with JS

Encoding to base64 is done with the btoa command

Converting Object to an Array