源代码:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Wfuyu教程(wfuyu.com)</title> </head> <body> <p>函数存储在变量后，变量可作为函数使用：</p> <p id="demo"></p> <script> var x = function (a, b) {return a * b}; document.getElementById("demo").innerHTML = x(4, 3); </script> </body> </html>
运行结果：