<html><body><h2>JavaScript 函数</h2><p>进行计算，然后显示结果。</p><p id="demo"></p><script>function myDisplayer(some) { document.getElementById("demo").innerHTML = some;}function myCalculator(num1, num2) { let sum = num1 + num2; return sum;}let result = myCalculator(5, 5);myDisplayer(result);</script></body></html>