How to Select Everything Between HTML Comments With Regex
And how to extract the content in JavaScript
Solutions
Quick solutions to common problems to help you get unblockedHow to Fix "Cannot read property 'then' of undefined" in JS
How to fix common JavaScript errors
How to Use Inline Styles in React
And when you should use it
3 Ways to Conditionally Apply Classes in React
Using libraries and custom solutions
Two Ways to Get Selected Option in React
Using controlled and uncontrolled components
How to Fix "replaceAll is not a function" Errors in JS
Learn what is the root cause and how you can fix "replaceAll is not a function" errors in JavaScript.
How to Fix "serializes to the same string" Errors in Jest
Learn how you can fix "serializes to the same string" errors in Jest using the correct matchers for expect statements.
How to Properly Pass Params to on:click in Svelte
Learn how you can properly pass parameters to function calls inside on:click event handlers in Svelte
Fix "cannot read properties of null (reading length)" in JS
Learn what is the cause, and how you can fix 'Uncaught TypeError: Cannot read properties of null (reading 'length')' errors in JavaScript.
Two Ways to Get Enum Keys by Values in TypeScript
Learn how you can get enum keys by their values in TypeScript using two different methods.
How to Extend Multiple Classes in TypeScript With Mixins
Learn how you can get around extending multiple classes in TypeScript using a mixin.
Two Ways to Force Types in TypeScript
Learn how you can force types in TypeScript using two different syntaxes.
How to Easily Extend Interfaces in TypeScript
Learn how you can extend your interfaces in TypeScript with other interfaces.
How to Correctly Check Undefined in TypeScript
Learn how you can correctly check if your variables are undefined in TypeScript.
Extending Types in TypeScript The Right Way
Learn how you can extend types in TypeScript using the & operator.
3+1 Ways to Declare Global Variables in TypeScript
Learn what are the different ways to declare global variables in your TypeScript app.
How to Check Variable Types in TypeScript
Learn how you can check the type of your variables in TypeScript with the typeof and instanceof keywords.
4 Ways to Convert Strings to Booleans in TypeScript
Learn what are the different ways to convert strings to boolean in Typescript in a type-safe way.
Why You Should Not Use Classes in React Testing Library
Learn why you should not be using class names in React Testing Library for querying your elements.
How to Fix "React Hook is Called Conditionally" Errors
Learn how you can resolve "React hook is called conditionally" error messages in your React app.
What Should You Use Instead of QuerySelector in React
Learn how should you work with document.querySelector properly inside React.
