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JavaScript comments are essential elements in code development that allow programmers to add explanations, notes, and annotations within their scripts. Comments play a crucial role in improving code readability, collaboration, and maintenance. In this article, we’ll explore the different types of JavaScript comments and provide examples to illustrate their usage.
// This is a single-line comment
let variable = 10; // Assigning the value 10 to the variable
/*
This is a multi-line comment
It spans across multiple lines
*/
let result = addNumbers(5, 7); // Calling a function to add numbers
/*
let unusedVariable = 20;
console.log("This code is currently commented out.");
*/
/**
* Calculates the sum of two numbers.
* @param {number} num1 - The first number.
* @param {number} num2 - The second number.
* @returns {number} - The sum of num1 and num2.
*/
function addNumbers(num1, num2) {
return num1 + num2;
}
let x = 5; // Initializing variable x with the value 5
let y = 10; // Initializing variable y with the value 10
Conclusion:
JavaScript comments are invaluable tools for developers to communicate within their code. Whether it’s explaining complex logic, providing context for future modifications, or generating documentation, comments contribute to code maintainability and collaboration. By incorporating these commenting techniques into your JavaScript projects, you can enhance the clarity and understanding of your codebase.