can you add in a function into my code in javascript

To add a function in JavaScript, you simply need to define the function using the function keyword followed by the function name and the function code block enclosed within curly braces {}. Here is an example of how you can add a simple function named sayHello to your code:

index.tsx
// Define the function
function sayHello() {
    console.log("Hello, World!");
}

// Call the function
sayHello(); // This will output "Hello, World!" in the console
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You can add this function to your existing code and call it whenever you need to execute the code inside the function.