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Big O notation is used in Computer Science to describe the time complexity of an algorithm. The best algorithms will execute the fastest and have the simplest complexity. Algorithms don’t always perform the same and may vary based on the Continue reading What is Big O Notation?
If neither attribute is present, the script is downloaded and executed synchronously, and will halt parsing of the document until it has finished executing (default behavior). Scripts are downloaded and executed in the order they are encountered. The defer attribute downloads the Continue reading What are defer and async attributes on a Script tag?
In JavaScript classes, the methods are not bound by default. This means that their this context can be changed (in the case of an event handler, to the element that is listening to the event) and will not refer to the component Continue reading How do you ensure methods have the correct this context in React component classes?
When several components need to share the same data, then it is recommended to lift the shared state up to their closest common ancestor. For example, if two child components share the same data, it is recommended to move the Continue reading What does lifting state up in React mean?
A value is either truthy or falsy depending on how it is evaluated in a Boolean context. Falsy means false-like and truthy means true-like. Essentially, they are values that are coerced to true or false when performing certain operations. There are 6 falsy values Continue reading What are truthy and falsy values in JavaScript?