JavaScript

11. Control Flow and Conditional Execution Control flow in JavaScript refers to the order in which code is executed, and how the execution path can be altered based on certain conditions or statements. A Quick Look at the Examples a. Control Flow Control flow in JavaScript refers to the order in which code is executed…

The switch statement is used to execute different blocks of code based on the value of an expression. It provides a more concise and readable way to handle multiple conditions compared to using multiple if-else statements. A Quick Look at the Examples a. Switch Statement Info The switch statement is used to execute different blocks…

Loops are used to execute a block of code repeatedly under certain conditions. They allow you to perform tasks multiple times without writing the same code over and over again manually. A Quick Look at the Examples a. Loops Introduction Loops are used to execute a block of code repeatedly under certain conditions. They allow…

In Part 1, we covered for, while, and do…while loops. In Part 2, we’ll explore two more specialized loops: for…in (for object properties) and for…of (for iterable values). A Quick Look at the Examples a. The for…in Loop The for…in loop is used to iterate over the enumerable properties of an object. It’s particularly useful…

Arrow functions in JavaScript provide a concise syntax for writing functions. They are part of the ECMAScript 2015 (ES6) specification. They offer several advantages: more compact syntax, lexical this binding, and no need for the function keyword. However, they have important limitations: they don’t have their own bindings to this, arguments, or super, and should…

The call stack is a fundamental concept in JavaScript (and most programming languages). It’s how the JavaScript engine keeps track of which function is currently running and where to return when it finishes. A Quick Look at the Example What happens when calculate() is called: a. What is the Call Stack? The call stack is…

A closure is a function that retains access to its lexical scope, even when the function is executed outside of that scope. This means a closure can “remember” and access variables from the environment in which it was created — even after that environment has finished executing. A Quick Look at the Examples a. Closure…

Recursion is a programming technique where a function calls itself directly or indirectly to solve smaller instances of the same problem. It’s a powerful approach for problems that can be broken down into smaller, similar sub-problems. A Quick Look at the Examples a. Recursion Recursion is a programming technique where a function calls itself directly…

A pure function is a function that adheres to two primary principles: it always produces the same output for the same input, and it has no side effects — meaning it doesn’t modify any external state. A Quick Look at the Examples a. What is a Pure Function? A pure function is a function that…

Arrays in JavaScript are used to store multiple values in a single variable. They’re fundamental in organizing and managing data in a list-like structure. Arrays are versatile — used to store ordered lists of elements. You can add, remove, and update elements using various methods, iterate with for, for…of, and .forEach(), and use array methods…