Can Comments Come Before Use Strict

Comments are a handy tool in programming that allows developers to add explanations and notes within the code for themselves and others to understand how the code works. However, when it comes to the placement of comments in relation to the "use strict" statement in JavaScript, there are some considerations to keep in mind.

In JavaScript, the `"use strict";` directive is used to enable strict mode, which helps developers write more secure and cleaner code by enforcing stricter parsing and error handling rules. It is recommended to place the `"use strict";` statement at the beginning of a script or a function to ensure that the strict mode is applied to the entire script or function.

When it comes to comments, they are typically treated as non-executable statements by the JavaScript interpreter. This means that comments do not affect the execution of the code. You can place comments anywhere in your code to provide explanations or context without impacting how the code functions.

So, can comments come before the `"use strict";` statement in JavaScript? The answer is yes, you can indeed place comments before the `"use strict";` directive without any issues. Since comments are ignored by the interpreter, their placement before or after the `"use strict";` statement does not affect the application of strict mode.

Here's an example to illustrate this:

// This is a comment explaining the purpose of the code
"use strict";

// Code here will be executed in strict mode
function exampleFunction() {
    // Another comment providing additional details
    return "Hello, world!";
}

// Calling the function
console.log(exampleFunction());

In the above code snippet, you can see that comments are placed both before and after the `"use strict";` statement. The JavaScript interpreter will simply ignore these comments, and the strict mode will still be applied to the function `exampleFunction()`.

However, it is essential to note that comments should be used judiciously and effectively to enhance code readability and maintainability. While the placement of comments before or after `"use strict";` does not impact the functionality of the strict mode, ensuring that comments are clear, concise, and relevant is crucial for the overall quality of your code.

So, the next time you're writing JavaScript code and wondering about the placement of comments in relation to the `"use strict";` directive, remember that comments are your allies in explaining your code, and they can peacefully coexist with strict mode in JavaScript. Happy coding!