Aug 30, 2025 · 4 min read · This blog covers: Variables & Data Types Hoisting, Scope & TDZ (Temporal Dead Zone) Operators & Type Coercion Control Flow (if, else, switch, loops) JavaScript Errors (built-in) Think of this as your step 1 in the complete JavaScript syllabus....
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Jul 29, 2025 · 13 min read · Coding isn't just about telling computers what to do; it's about telling them when to do it. — It's about telling them how to make choices. 🧠 Should this run or not? Is this true or false? 🤔 Javascript gives us tools like Boolean logic, conditions,...
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Apr 15, 2025 · 4 min read · ✅ 1. What is a Boolean? A Boolean is a primitive data type in JavaScript with only two possible values: true → Represents yes, enabled, correct, valid. false → Represents no, disabled, incorrect, invalid. let isLoggedIn = true; let hasPaid = f...
Join discussionJan 23, 2024 · 3 min read · We often see and write things like this: function sayHey(name) { name = name || "Precious"; console.log(`Hey ${name}`); } sayHey("Morty"); //Hey Morty sayHey(); //Hey Precious But did you know that the ?? operator, known as the nullish coal...
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Jul 24, 2023 · 1 min read · In JavaScript, a truthy value is a value that is considered true when encountered in a Boolean context. All values are truthy unless they are defined as falsy (i.e., except for false, 0, -0, 0n, "", null, undefined, and NaN). Truthy values include: ...
Join discussionJun 30, 2023 · 4 min read · Checkout the interactive quiz https://quizzesforyou.com/quiz/jstruthyfalsy Checkout All JavaScript Quizzes In JavaScript, values can be classified as either truthy or falsy. Knowing which values are considered truthy or falsy allows you to write mor...
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