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Articles tagged with #webdev
Callbacks A callback function is a function passed as an argument to another function and executed later. function fetchData(callback) { setTimeout(() => { console.log("Data fetched"); callback(); }, 2000); } function proc...
» Asynchronous JavaScript is a programming technique that allows certain operations to be executed without blocking the main thread (the execution flow of JavaScript). » This means that while JavaScript is waiting for a long-running task (e.g., fetch...
Function borrowing allows us to use the methods of one object on a different object without having to make a copy of that method and maintain it in two separate places It is accomplished through the use of .call(), .apply(), or .bind(), all of which ...
this is a special keyword in JavaScript that refers to the object that is executing the current function. Its value depends on how the function is called. this Used Alone (Global Context) //In Node.js console.log(this); // {} (return empty object)...
map() The map() method creates a new array by applying a function to each element of an existing array. It does not modify the original array. It returns an array of the same length as the original. It takes callback function //Example 1 ...
What is DOM ? » The Document Object Model (DOM) is a programming interface that represents the structure of an HTML or XML document as a tree-like hierarchy. » The DOM allows JavaScript to interact with and modify web pages dynamically. How does t...