Operators in JavaScript Simplified Revision Notes for A-Level OCR Computer Science

Revision notes with simplified explanations to understand Operators in JavaScript quickly and effectively.

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Operators in JavaScript

Overview

JavaScript supports various operators for arithmetic, assignment, comparison, and logical operations, enabling data manipulation and decision-making.

Key Concepts

Arithmetic Operators: +, -, *, /, %.
Comparison Operators: ==, ===, !=, <, >.
Logical Operators: &&, ||, !.

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Example:

let result = 10 + 5; // Arithmetic
let isEqual = (result === 15); // Comparison
let isValid = isEqual && true; // Logical

Common Mistakes

Misusing == and ===: === checks both value and type.

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Key Takeaways

Use the appropriate operator for each task.
Practice with logical and comparison operators to avoid common errors.

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