Default parameters in JavaScript have evolved significantly, with the introduction of ES6 (ECMAScript 2015) bringing a more intuitive and cleaner syntax. Before ES6, developers relied on workarounds using logical OR (`||`) or checks within the function body to handle default values. With the introduction of default parameters, developers can now set default values directly within the function's parameter list, simplifying code and improving readability.
Here’s an example demonstrating the use of default parameters in JavaScript:
function greet(name = 'Guest') {
return `Hello, ${name}!`;
}
console.log(greet()); // Outputs: Hello, Guest!
console.log(greet('Alice')); // Outputs: Hello, Alice!
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