25 Utility Code for your next JavaScript Project

➊ Check if input is of number type
➋ Check if input value contains a number
➌ Check if input value is null or, undefined
➍ Check if input value is null or, empty string
➎ Check if input value is falsy
➏ Check if input is an Array
➐ Check if input is an Empty object
➑ Convert first character of each sentence to uppercase
➒ Convert first character of each word to uppercase
➓ Reverse a string
➊➊ Convert a number from one base to another
➊➋ Create and initialise array
➊➌ Empty an array
➊➍ Remove falsy values from an array
➊➎ Remove duplicates from array
➊➏ Casting an array to array of numbers
➊➐ Return a series of integers starting from 0
➊➑ Flatten Array to any depth
➊➒ Remove Holes from Array
➋x➓ Merge any number of arrays
➋➊ Shuffle an array
➋➋ Generate a Random Boolean
➋➌ Generate a Random Number
➋➍ Generate a Random ID
➋➎ Generate a Random Hex Color Code
👉Suggestions👈

⬖ Do you have better implementation for any of these methods? Share those in 💬

⬗ If you find any incorrect information, do inform me.
🚏 Upcoming Twitter Space

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⏰ 07.30PM IST (02.00PM GMT)

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More from @swapnakpanda

Feb 12
JavaScript Interview Questions

Series: 2️⃣
Level: Beginner
Topics:

➊ Basics about Arrays
➋ Array Properties
➌ Array Methods
➍ Looping through Arrays
➎ Array related Operators
➏ Common Array Operations
➐ Comparison of Terms
🚥 Disclaimer

⬖ The questions covered here are mostly conceptual
⬘ I never claim only these type of questions are/should be asked during interviews
⬗ For interviews, you should have fundamentals strong. And you should be able to provide solutions to practical problems.
Read 20 tweets
Feb 11
JavaScript essentials for your React journey

➊ Basics

⇥ Variable Declaration
⇥ Variable Scope
⇥ Variable Hoisting
⇥ Functions
⇥ Arrow Functions
⇥ Callback Functions
⇥ Closure
⇥ Basic Operators
⇥ Array Literals
⇥ Object Literals
⇥ if, if...else
⇥ for, for...in, for...of, while, do...while
➋ Array.prototype Methods

⇥ forEach()
⇥ map()
⇥ reduce()
⇥ flat()
⇥ flatMap()
⇥ find()
⇥ filter()
⇥ slice()
⇥ splice()
⇥ push()
⇥ pop()
⇥ shift()
⇥ unshift()
⇥ some()
⇥ every()
Read 13 tweets
Feb 9
Do you think it's peculiar?

parseInt(0.5); // => 0
parseInt(0.05); // => 0
parseInt(0.005); // => 0
parseInt(0.0005); // => 0
parseInt(0.00005); // => 0
parseInt(0.000005); // => 0
parseInt(0.0000005); // => 5

Here's why. A JavaScript 🧵
➊ What is parseInt?

parseInt is a function which

→ takes a "String" input
→ parses this input
→ returns the parsed "integer" value
➋ What if input is not a String?

If input is not a String, it's first converted to String and, then parsed.
Read 9 tweets
Feb 8
🎨 All (140) HTML Color Names

If you are interested in the HD quality of this cheat sheet,

✓ Like (❤️) this Tweet
✓ Follow me ✅
✓ Reply (💬) to this Tweet with a 👋
✓ Retweet (🔁) for more chances.

I will share you the direct link in DM. Image
🚥 Disclaimer

I have compiled these information with all sincerity. But in case you find any omissions or, wrong representations, please inform me.
🚏 Upcoming Twitter Space

📅 12-Feb-2022 (Saturday)
⏰ 07.30PM IST (02.00PM GMT)

⬘ Join me in this space to have a technical discussion around "Arrays and Functions in JavaScript".

⬙ Share among your circle if anyone is interested.

twitter.com/i/spaces/1dRJZ…
Read 4 tweets
Feb 6
100+ Project Ideas for JavaScript "Absolute Beginners"

🚥 Disclaimer

⬖ Complete projects as per the order in which they are mentioned.

⬘ Knowledge of HTML & CSS is very much required for designing UI.

⬗ Take these ideas and, form your own ideas. Do not STOP.
➊ Unit Conversion

➀ Currency
➁ Weight
➂ Height
➃ Temperature
➄ Distance
➅ Area
➆ Volume
➇ Time
➈ Numbers (Binary, Octal, Hexadecimal)
➉ Color (rgb to hsl)
Read 15 tweets
Feb 5
🚏 Database Categories w/ Examples
Broadly databases can be categorised into below categories.

🛢
⮑ Relational
⮑ NoSQL
⮑ Document
⮑ Wide-Column
⮑ Key-Value
⮑ Graph
⮑ Time Series
⮑ Search

And, few others.
🚥 Disclaimer

I have compiled these information with all sincerity. But in case you find any omissions or, wrong representations, please inform me.
Read 5 tweets

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