What are default parameters

Default parameters in JavaScript allow you to initialize function parameters with default values if no value or undefined is passed. This feature helps in simplifying function calls and enhancing code readability.

function multiply(a, b = 1) { return a * b; } console.log(multiply(5)); // Output: 5 console.log(multiply(5, 2)); // Output: 10

default parameters javascript functions ES6 features function arguments

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