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Compare JavaScript == and === operators

Last updated: Mar 29, 2026

Quick Overview

This question evaluates understanding of JavaScript equality semantics and type coercion, assessing a candidate's competency in language-specific comparison behavior and recognition of subtle runtime differences.

  • medium
  • Schneider Electric
  • Software Engineering Fundamentals
  • Software Engineer

Compare JavaScript == and === operators

Company: Schneider Electric

Role: Software Engineer

Category: Software Engineering Fundamentals

Difficulty: medium

Interview Round: Technical Screen

In JavaScript, what is the difference between the `==` and `===` operators? Explain: 1. How each operator compares two values. 2. What type coercion is and how it relates to `==`. 3. Examples where `==` and `===` produce different results. 4. Which operator you would recommend using in most cases and why.

Quick Answer: This question evaluates understanding of JavaScript equality semantics and type coercion, assessing a candidate's competency in language-specific comparison behavior and recognition of subtle runtime differences.

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Schneider Electric
Dec 8, 2025, 6:10 PM
Software Engineer
Technical Screen
Software Engineering Fundamentals
1
0

In JavaScript, what is the difference between the == and === operators?

Explain:

  1. How each operator compares two values.
  2. What type coercion is and how it relates to == .
  3. Examples where == and === produce different results.
  4. Which operator you would recommend using in most cases and why.

Solution

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