What is a Constructor Function in JavaScript? (Beginner Guide with Examples)

📰 Dev.to · subash

Learn how to create multiple objects of the same type using constructor functions in JavaScript

beginner Published 7 Apr 2026
Action Steps
  1. Define a constructor function using the function keyword
  2. Create a new object using the constructor function with the new keyword
  3. Add properties to the constructor function using this
  4. Instantiate multiple objects from the constructor function
  5. Compare the differences between constructor functions and object literals
Who Needs to Know This

Frontend developers and JavaScript enthusiasts can benefit from understanding constructor functions to create reusable object types

Key Insight

💡 Constructor functions allow you to create multiple objects with the same properties and methods

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🚀 Learn how to create multiple objects of the same type with JavaScript constructor functions! 💻

Key Takeaways

Learn how to create multiple objects of the same type using constructor functions in JavaScript

Full Article

=>Sometimes we need to create many objects of the same type. =>To create an object type we use...
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