← Glossary
What does "default value" mean in programming?
default value is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
A value that a parameter or variable takes when none is explicitly provided. In JavaScript and TypeScript, function parameters can have default values assigned with =.
Example
"function greet(name = 'World') { return `Hello, ${name}!`; }"
Related terms
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