源代码:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Wfuyu教程(wfuyu.com)</title> </head> <body> <p>该实例中， myFunction 是函数构造函数:</p> <p id="demo"></p> <script> function myFunction(arg1, arg2) { this.firstName = arg1; this.lastName = arg2; } var x = new myFunction("John","Doe") document.getElementById("demo").innerHTML = x.firstName; </script> </body> </html>
运行结果：