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JavaScript Logical Operators Explained Simply

There are three logical operators in JavaScript:

  • || = OR
  • && = AND
  • ! = NOT
const nickname = "";
const isSignedIn = true;
const hasCompletedLesson = false;

console.log(nickname || "Guest");
console.log(isSignedIn && "Welcome back");
console.log(!hasCompletedLesson);

Read more about Logical Operators on MDN

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