专注前端素材！
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> </head> <body> <script> var person= { firstname : "John", lastname : "Doe", id : 5566 }; document.write(person.lastname + "<br>"); document.write(person["lastname"] + "<br>"); </script> </body> </html>
运行结果