JavaScript Operator Precedence
⭐ JavaScript Operator Precedence — Which Operator Runs First & Why It Matters If you’ve ever written a JavaScript expression and thought “Why is this giving a weird result?” 👉 Operator Precedence is usually the reason. This post will give you crystal-clear clarity on: what operator precedence is how JavaScript decides which operator executes first real examples (simple → tricky → interview-level) common mistakes developers make best practices to avoid bugs forever We’ll start with the main point , then go deep and wide . 🚀 Main Point (Understand This First) 👉 Operator precedence determines the order in which operators are evaluated in an expression when parentheses are NOT used . JavaScript does NOT evaluate expressions strictly left to right. It follows a predefined precedence table . let result = 2 + 3 * 4; console.log(result); // 14 (NOT 20) Why? * has higher precedence than + So 3 * 4 runs first → 12 Then 2 + 12 → 14 🧠Simple Mental Model (V...
