What is IP & Port?
🌐 First: What is IP & Port?
-
IP address = identifies a machine
👉 like house address (192.168.1.1) -
Port = identifies a service inside that machine
👉 like room number - 80 → HTTP
- 443 → HTTPS
- 3306 → MySQL
Async/await
Async/await An async function is a function declared with the async keyword, and the await keyword is permitted within them. The async and await keywords enable asynchronous, promise-based behavior to be written in a cleaner style, avoiding the need to explicitly configure promise chains. "async and await make promises easier to write" async makes a function return a Promise await makes a function wait for a Promise Async functions Let’s start with the async keyword. It can be placed before a function, like this: async function f() { return 1; } The word “async” before a function means one simple thing: a function always returns a promise. Other values are wrapped in a resolved promise automatically. For instance, this function returns a resolved promise with the result of 1; let’s test it: async function f() { return 1; } f().then(alert); // 1 …We could explicitly return a promise, which would be the same: async function f() { return Promis...
Comments
Post a Comment