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Iterables
Iterables A generalization of arrays, it allows us to make any object iterable in the context of...
Arrays and methods
Array Two ways of creating empty array let arr = new Array(); let arr = []; Create an array w...
Symbol Type
Symbols In JavaScript there is two primitive types that can be used as object property key St...
Optional chaining
Optional chaining There is this problem that if the object that you are accessing might or might...
Constructor and "new" operator
Constructor function Function that is meant to be a constructor are named with capital letter fi...
Code structure and data types
Script tag You can insert JavaScript program into HTML document using the <script> tags. You ca...
Garbage collection
Reachability In JavaScript garbage collection is implemented through something called reachabili...
Functions, function expression, arrow function
Function Declaration To declare a function follow the syntax: function function_name(parameter1...
Loops and switch statement
While and for loop They are the same as in Python, C, and Java while (condition) { // Repeat ...
Introduction
What is JavaScript It is a scripting language that is the core of websites, along with HTML and ...
Variables
Variables A named storage for storing data. There are couple way of creating a variable var ke...
Type Conversion
String Conversion You can call the String() function to explicit convert a value to a string St...
Conditional and Logical Operator
Ternary Operator let accessAllowed; if (age > 18) { accessedAllowed = true; } else { ...
How To Install NodeJs + NPM (Linux)
1. Head to the official repository for Node.js distributio The link is right here: https://gith...
Virtual File System
Superblock Superblock is metadata about the filesystem. It define the name of the file system (e...
Diff Command Line Tool
https://www.computerhope.com/unix/udiff.htm#How%20diff%20Works
Disk Usage utility
df - File System Disk Usage The command df reports the total disk usage on the mounted file syst...
Echo Clear Previous Line
The escape string \033[0K will clear the entire line, this string are cross-platform so it will w...
Backslash Escapes
See link for valid information. This page is outdated. When you are working with special charact...
find glob expansion
When using regular expression in find, you have to quote the name parameter to prevent glob expan...