Information Technology IT – 21 Programming for the web | e-Consult

Answer: In JavaScript, == and === are comparison operators, but they differ in how they handle type coercion.

• == (Equality): This operator checks for equality after performing type coercion if the operands are of different types. Type coercion can lead to unexpected results.
• === (Strict Equality): This operator checks for equality without type coercion. It returns true only if the operands have the same type and the same value.

Using === is generally preferred because it avoids the potential for unexpected type coercion, leading to more predictable and reliable comparisons. It's a more precise way to determine if two values are truly equal.

Example:

console.log(5 == "5");   // Output: true (type coercion occurs)
console.log(5 === "5");  // Output: false (no type coercion)
console.log(true == 1);  // Output: true (type coercion occurs)
console.log(true === 1); // Output: false (no type coercion)