<!DOCTYPE html> <html> <body> <h2>JavaScript 函数</h2> <p>此例调用执行计算并返回结果的函数:</p> <p id="demo"></p> <script> function myFunction(p1, p2) { return p1 * p2; } document.getElementById("demo").innerHTML = myFunction(4, 3); </script> </body> </html>