<!DOCTYPE html> <html> <body> <h1>JavaScript 函数</h1> <p>此例调用一个执行计算并返回结果的函数:</p> <p id="demo"></p> <script> var x = myFunction(4, 3); document.getElementById("demo").innerHTML = x; function myFunction(a, b) { return a * b; } </script> </body> </html>