Archive

Archives of all my tutorials and notes on JavaScript, Node.js, React.js, React Native, Linux. Interview questions and answers for software developers.

2021  56

March  9

Beginners Guide into HTML Tables

March 7, 2021 路 5 min 路 Coderslang Master

JavaScript Interview Question #44: Number vs BigInt in JS

March 6, 2021 路 1 min 路 Coderslang Master

JavaScript, synchronizing Promises with async/await

March 6, 2021 路 2 min 路 Coderslang Master

JSON Tutorial for JavaScript and Node.js

March 5, 2021 路 4 min 路 Coderslang Master

Node.js, Express Middleware and External Access

March 4, 2021 路 4 min 路 Coderslang Master

Create your first Node.js server with Express backend

March 3, 2021 路 3 min 路 Coderslang Master

JavaScript Interview Question #43: Object.toString and Array.toString

March 3, 2021 路 1 min 路 Coderslang Master

CSS, Flexbox Gap

March 2, 2021 路 2 min 路 Coderslang Master

How to add a comment in CSS

March 1, 2021 路 1 min 路 Coderslang Master

February  34

External CSS stylesheet

February 28, 2021 路 3 min 路 Coderslang Master

JavaScript Interview Question #42: How Math.max works in JS

February 28, 2021 路 1 min 路 Coderslang Master

Internal CSS stylesheet in the HTML document

February 27, 2021 路 3 min 路 Coderslang Master

Introduction to CSS for beginners

February 26, 2021 路 3 min 路 Coderslang Master

HTML document structure

February 25, 2021 路 3 min 路 Coderslang Master

JavaScript Interview Question #41: Increasing MAX_SAFE_INTEGER

February 25, 2021 路 1 min 路 Coderslang Master

Nested HTML tags

February 24, 2021 路 1 min 路 Coderslang Master

Inline HTML tags

February 23, 2021 路 1 min 路 Coderslang Master

Introduction to HTML for beginners

February 22, 2021 路 4 min 路 Coderslang Master

JS Interview #40: What is the type of undefined in JS?

February 22, 2021 路 1 min 路 Coderslang Master

Optimized bubble sort in JavaScript. Cocktail sort

February 21, 2021 路 5 min 路 Coderslang Master

Bubble sort in JavaScript

February 20, 2021 路 2 min 路 Coderslang Master

Algorithm complexity and efficiency

February 19, 2021 路 3 min 路 Coderslang Master

JS Interview #39: How does setTimeout work inside the for loop?

February 19, 2021 路 1 min 路 Coderslang Master

HTML, how to add a comment

February 18, 2021 路 2 min 路 Coderslang Master

JavaScript, using Math.floor to round a number

February 17, 2021 路 2 min 路 Coderslang Master

HTML, insert an image into the page

February 16, 2021 路 2 min 路 Coderslang Master

JS Interview #38: Can you add multiple arrays in JavaScript?

February 16, 2021 路 1 min 路 Coderslang Master

JavaScript, calculate a square root using Math.sqrt()

February 15, 2021 路 1 min 路 Coderslang Master

JavaScript, remove last character from a string

February 14, 2021 路 2 min 路 Coderslang Master

JavaScript, Promise creation and Promise chains

February 13, 2021 路 5 min 路 Coderslang Master

JS Interview #37: What is the type of a single argument provided to the split function?

February 13, 2021 路 1 min 路 Coderslang Master

140 HTML colors with HEX, RGB codes and names

February 12, 2021 路 6 min 路 Coderslang Master

JavaScript, asynchronous programming and Promise

February 11, 2021 路 4 min 路 Coderslang Master

JavaScript setInterval, how to schedule repeated execution with the delay

February 10, 2021 路 2 min 路 Coderslang Master

JS Interview #36: Can you add a new property to the JS array?

February 10, 2021 路 1 min 路 Coderslang Master

JavaScript setTimeout, how to delay the function execution

February 9, 2021 路 2 min 路 Coderslang Master

What is rimraf and how to use it in Node.js

February 8, 2021 路 1 min 路 Coderslang Master

JS Interview #35: What is faster, zero timeout or immediate resolve?

February 7, 2021 路 1 min 路 Coderslang Master

How to disable ESLint for some lines, files or folders

February 6, 2021 路 2 min 路 Coderslang Master

4 ways to compare strings in JavaScript

February 5, 2021 路 2 min 路 Coderslang Master

JS Interview #34: Different ways to get current date in JavaScript

February 4, 2021 路 1 min 路 Coderslang Master

How to fix the error require is not defined in Node.js

February 2, 2021 路 2 min 路 Coderslang Master

JS Interview #33: Add two empty arrays and check the type

February 1, 2021 路 1 min 路 Coderslang Master

January  13

How to solve JavaScript tasks in a professional IDE with hints

January 31, 2021 路 2 min 路 Coderslang Master

JS Interview #32: 0.1 + 0.1 + 0.1 === 0.3

January 29, 2021 路 1 min 路 Coderslang Master

How to detect the user browser with JavaScript

January 28, 2021 路 1 min 路 Coderslang Master

JS Interview #31: Big or small

January 26, 2021 路 1 min 路 Coderslang Master

How to fix error 413 Request Entity Too Large in nginx

January 25, 2021 路 2 min 路 Coderslang Master

JS Interview #30: Reject inside resolve

January 23, 2021 路 1 min 路 Coderslang Master

JS Interview #29: Slice and dice

January 20, 2021 路 2 min 路 Coderslang Master

JS Interview #28: Resolve and reject at the same time

January 17, 2021 路 1 min 路 Coderslang Master

JS Interview #27: Handling errors in JavaScript Promise chains

January 14, 2021 路 1 min 路 Coderslang Master

JS Interview #26: Are these dates equal?

January 11, 2021 路 1 min 路 Coderslang Master

JS Interview #25: Immediate Promise.resolve

January 8, 2021 路 1 min 路 Coderslang Master

JS Interview #24: Adding properties to strings in JavaScript

January 5, 2021 路 1 min 路 Coderslang Master

JS Interview #23: Array.splice

January 2, 2021 路 2 min 路 Coderslang Master

2020  39

December  11

JS Interview #22: How toString works in JavaScript?

December 30, 2020 路 1 min 路 Coderslang Master

JS Interview #21: ISO Date

December 27, 2020 路 1 min 路 Coderslang Master

JS Interview #20: Can you sum arrays with objects in JavaScript?

December 24, 2020 路 1 min 路 Coderslang Master

JS Interview #19: Catching the rejected Promise

December 21, 2020 路 1 min 路 Coderslang Master

JS Interview #18: What’s the sum of two booleans in JavaScript?

December 18, 2020 路 1 min 路 Coderslang Master

JS Interview #17: Sum of two empty arrays in JavaScript

December 15, 2020 路 1 min 路 Coderslang Master

JS Interview #16: typeof NaN

December 12, 2020 路 1 min 路 Coderslang Master

JS Interview #15: Getter function

December 9, 2020 路 1 min 路 Coderslang Master

JS Interview #14: 0.1 + 0.2 = ?

December 6, 2020 路 1 min 路 Coderslang Master

JS Interview #13: Big number

December 3, 2020 路 1 min 路 Coderslang Master

Algorithms, Abstraction and Pseudocode

December 1, 2020 路 11 min 路 Coderslang Master

November  23

JS Interview #12: Math.min()

November 30, 2020 路 1 min 路 Coderslang Master

Why you should never cheat when learning to code

November 30, 2020 路 2 min 路 Coderslang Master

How to do bit manipulation in JavaScript

November 28, 2020 路 4 min 路 Coderslang Master

JS Interview #11: Scope

November 27, 2020 路 1 min 路 Coderslang Master

JS Interview #10: null + undefined

November 24, 2020 路 1 min 路 Coderslang Master

JS Interview #9: Promise.reject + try/catch

November 21, 2020 路 1 min 路 Coderslang Master

Are you a SOLID developer

November 20, 2020 路 2 min 路 Coderslang Master

How to import and use npm modules

November 19, 2020 路 2 min 路 Coderslang Master

How to find and install open-source npm packages

November 18, 2020 路 2 min 路 Coderslang Master

JS Interview #8: Zero timeout

November 18, 2020 路 1 min 路 Coderslang Master

PostgreSQL, views vs stored procedures

November 17, 2020 路 1 min 路 Coderslang Master

The difference between regular views and materialized views in PostgreSQL

November 16, 2020 路 1 min 路 Coderslang Master

JS Interview #7: Is this an array?

November 15, 2020 路 1 min 路 Coderslang Master

Coderslang CV review

November 14, 2020 路 1 min 路 Coderslang Master

How to create a VIEW in PostgreSQL

November 13, 2020 路 2 min 路 Coderslang Master

JS Interview #6: Variable number of arguments in JavaScript

November 12, 2020 路 1 min 路 Coderslang Master

JS Interview #5: Can you use an arrow function as a getter?

November 9, 2020 路 1 min 路 Coderslang Master

How to save a SELECT query in PostgreSQL

November 8, 2020 路 4 min 路 Coderslang Master

Coderslang 3.3.1

November 7, 2020 路 1 min 路 Coderslang Master

JS Interview #4: try/catch

November 6, 2020 路 1 min 路 Coderslang Master

How to test Node.js backend with supertest

November 5, 2020 路 2 min 路 Coderslang Master

Built-in String functions in JavaScript

November 4, 2020 路 5 min 路 Coderslang Master

JS Interview #3: Adding strings to numbers and booleans

November 3, 2020 路 1 min 路 Coderslang Master

October  3

JS Interview #2: How to create an array in JavaScript

October 31, 2020 路 1 min 路 Coderslang Master

JS Interview #1: Type conversion in JavaScript

October 29, 2020 路 1 min 路 Coderslang Master

Coderslang 3.2.9

October 9, 2020 路 2 min 路 Coderslang Master

September  2

Basic math operations in JavaScript

September 5, 2020 路 4 min 路 Coderslang Master

The most useful terminal commands (Linux, Mac and UNIX)

September 2, 2020 路 8 min 路 Coderslang Master