Web Reference: Jul 8, 2025 · Default function parameters allow named parameters to be initialized with default values if no value or undefined is passed. This tutorial will delve deep into default parameters, explaining their importance, how to use them effectively, and common pitfalls to avoid. By the end, you’ll be equipped to write more robust and readable JavaScript code. This tutorial teaches you how to use JavaScript default parameters for functions and shows you various examples of functions that use default parameters.
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