Web Reference: Jan 20, 2014 · There are two aspects to your questions: what are the technical aspects of using const instead of var and what are the human-related aspects of doing so. The technical difference is significant. Jan 16, 2026 · In Node.js, the const keyword is used to declare constants. When you declare a variable using const, you must initialize it at the same time. Once initialized, you cannot reassign a new value to the constant. Constants declared with the const keyword have block scope. Jan 11, 2025 · --- Now you’ve learned the basics of variables, functions, and modules in Node.js. These concepts are the building blocks for creating powerful applications.
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