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Cover Image for How to access the correct `this` inside a callback

How to access the correct `this` inside a callback

updated a few hours ago
javascript

# How to Access the Correct `this` Inside a Callback: A Comprehensive Guide šŸ˜ŽšŸ”§šŸ“š So, you're building JavaScript applications and you've come across the notorious problem of accessing the correct `this` inside a callback. Fear not! In this guide, we'll d

Matheus Mello
Matheus Mello
Cover Image for How can I check if a string is a valid number?

How can I check if a string is a valid number?

updated a few hours ago
javascriptvalidation

# Can You Count on It? How to Check if a String is a Valid Number! āœ”ļøšŸ”¢ Are you tired of banging your head against the wall, trying to figure out if a string is a valid number? We feel your pain! šŸ¤• But fear not, because we've got your back! In this blog

Matheus Mello
Matheus Mello
Cover Image for Turning off eslint rule for a specific line

Turning off eslint rule for a specific line

updated a few hours ago
javascript

# Turning off an ESLint Rule for a Specific Line: A Simple Solution šŸš¦ [Image: :wave:] Hey there, tech enthusiasts! If you've ever found yourself struggling to turn off an ESLint rule for a specific line of code, you've come to the right place! šŸŽ‰ In this

Matheus Mello
Matheus Mello
Cover Image for Why does ++[[]][+[]]+[+[]] return the string "10"?

Why does ++[[]][+[]]+[+[]] return the string "10"?

updated a few hours ago
javascriptsyntax

# Why does `++[[]][+[]]+[+[]]` return the string "10"? If you've come across the puzzling expression `++[[]][+[]]+[+[]]`, you might be wondering why it returns the string "10". šŸ¤” It seems like a nonsensical combination of characters, but fear not! We're

Matheus Mello
Matheus Mello
Cover Image for How do you use a variable in a regular expression?

How do you use a variable in a regular expression?

updated a few hours ago
javascriptregex

# How to Use a Variable in a Regular Expression šŸ§©šŸ”¤ Are you trying to create a `String.replaceAll()` method in JavaScript? šŸ¤” Do you want to use a regular expression to make it concise and efficient? šŸš€ But wait... How do you pass a variable into a regul

Matheus Mello
Matheus Mello
Cover Image for What is TypeScript and why would I use it in place of JavaScript?

What is TypeScript and why would I use it in place of JavaScript?

updated a few hours ago
javascript

# **TypeScript: Level up your JavaScript Game šŸ’Ŗ** ## Introduction So, you've heard about TypeScript and you might be wondering what it is and why you should consider using it instead of plain old JavaScript. Well, fear not, my fellow developer! In this

Matheus Mello
Matheus Mello
Cover Image for What is the "new" keyword in JavaScript?

What is the "new" keyword in JavaScript?

updated a few hours ago
javascript

# Understanding the 'new' Keyword in JavaScript šŸ‘‹ Hey there, tech enthusiasts! Welcome to another exciting blog post where we unravel the mysteries of JavaScript. Today, let's dive into the fascinating world of the 'new' keyword and demystify its purpose

Matheus Mello
Matheus Mello
Cover Image for How can I add a key/value pair to a JavaScript object?

How can I add a key/value pair to a JavaScript object?

updated a few hours ago
javascript

# šŸ“ Adding a Key/Value Pair to a JavaScript Object: Easy Peasy! šŸš€ So, you have this awesome JavaScript object, filled with key/value pairs. šŸŽ‰ But now, you're faced with a new challenge. You want to add another key/value pair to your existing object, bu

Matheus Mello
Matheus Mello
Cover Image for How to efficiently count the number of keys/properties of an object in JavaScript

How to efficiently count the number of keys/properties of an object in JavaScript

updated a few hours ago
countjavascriptperformanceproperties

# How to efficiently count the number of keys/properties of an object in JavaScript šŸ˜ŽšŸ”¢ So you want to count the number of keys/properties of an object in JavaScript, but you're wondering if there's a faster and more efficient way to do it without iterat

Matheus Mello
Matheus Mello
Cover Image for Scroll to the top of the page using JavaScript?

Scroll to the top of the page using JavaScript?

updated a few hours ago
javascriptscroll

# šŸš€ How to Scroll to the Top of the Page Using JavaScript - Instantly! šŸš€ Are you tired of manually scrolling all the way to the top of a web page? Fear not, JavaScript has got you covered! In this blog post, we'll explore a simple yet powerful solution

Matheus Mello
Matheus Mello