<|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
Create a JavaScript function to log a friendly message when the page is loaded.
<|im_end|>
<|im_start|>assistant
window.onload = function () {
    console.log('Welcome to my website!');
}<|im_end|>
