源代码:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Wfuyu教程(wfuyu.com)</title> </head> <body> <p>函数可作为一个表达式使用。</p> <p id="demo"></p> <script> function myFunction(a, b) { return a * b; } var x = myFunction(4, 3) * 2; document.getElementById("demo").innerHTML = x; </script> </body> </html>
运行结果：