Web Reference: Jan 16, 2026 · Whether you’re a beginner confused by unexpected object behavior or an experienced developer brushing up on fundamentals, this guide will clarify the "why" and "how" behind JavaScript’s object references. Jul 29, 2025 · Modifying objects in JavaScript allows you to change, add, or delete properties dynamically, offering flexibility for managing and manipulating data within applications. Jun 26, 2016 · When you assign a new value to the copy variable, you are getting rid of the reference and assigning the new value to the copy, however, if you only modify the value of the copy (without assigning a new value), you are modifying the copy and the original.
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