There is no definitive answer to when you should check if an object property is null, undefined, or exists, as it depends on the context and the purpose of your code.
Cloning an object is harder than you think as you have to handle reference types, circular references, functions, special objects, hidden properties.
JavaScript provides several approaches to achieve this, ranging from basic techniques to more advanced methods involving functions or regular expressions.
You can use global variables across multiple files by attaching them to the global object or by using a module system to import and export variables between files.
A sleep or delay function is a programming feature that allows you to pause the execution of a program or a specific part of a program for a specified amount of time.
Tuples can store only a fixed number of elements and types at each index, while arrays can store any combination of types and the order is not important.
Arrays in TypeScript are very similar to JavaScript arrays, but TypeScript provides you with the power of static typing, type inference, and type annotations.
A binary number is a numeral system with a base of 2. It uses only two symbols, typically 0 and 1, to represent all values.
You can convert both strings to either lower case or upper case, use the localeCompare method of the String object, or regular expressions with the i flag.
Base64 works by dividing the input data into groups of three bytes (24 bits) and then converting each group into four characters from the 64-character alphabet.