<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
How does one go about creating a function in JavaScript?
<|im_end|>
<|im_start|>assistant
In JavaScript, functions are declared using the 'function' keyword followed by the name of the function and a pair of parentheses. The code for the function should be enclosed within curly brackets. For example:

function addTwoNumbers(a, b) {
return a + b;
}<|im_end|>
