Web Reference: In this tutorial, you will learn how to use the TypeScript optional parameters for functions. Jan 22, 2025 · Optional parameters in TypeScript allow functions to be called without specifying all arguments, enhancing flexibility and code readability. Denoted by appending a ? to the parameter name. We can get this functionality in TypeScript by adding a ? to the end of parameters we want to be optional. For example, let’s say we want the last name parameter from above to be optional:
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