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Technology Quote by Eric Freeman

“If you change any property in the prototype, it affects all the objects that inherit from that prototype, unless that object has overridden that property.” quote by Eric Freeman
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““If you change any property in the prototype, it affects all the objects that inherit from that prototype, unless that object has overridden that property.””

Eric Freeman

About This Quote

Source Book: Head First JavaScript Programming, 2008

Changing a prototype property propagates to all inheriting objects unless they override it.

In simple terms: Prototype changes affect all descendants unless overridden.

Key Takeaway

Check for overrides before altering prototypes.

Themes

programming inheritance JavaScript

Mood

technical thoughtful

Type

instructional practical

When to use this quote

  • library updates
  • framework extensions
  • shared configuration
  • debugging

Key Concepts

prototype chain property shadowing object‑oriented design

Questions to Reflect On

  • Do you understand prototype inheritance?
  • When should you avoid prototype mutation?
A Different Perspective

Overriding can be unintuitive and cause bugs.

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