摘要：
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> </head> <body> <script type="text/javascript"> //直接创建 // var student = new Object 阅读全文
摘要：
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> </head> <body> <h1 id="date_time"></h1> <script type="text/javascript"> function 阅读全文