HTML5 拥有多个可供选取日期和时间的新输入类型：

• date - 选取日、月、年
• month - 选取月、年
• week - 选取周和年
• time - 选取时间（小时和分钟）
• datetime - 选取时间、日、月、年（UTC 时间）
• datetime-local - 选取时间、日、月、年（本地时间）

This is how Opera renders <input type="date">:

If you need a time to go with that date, Opera also supports <input type="datetime">:

If you only need a month + year (perhaps a credit card expiration date), Opera can render a <input type="month">:

Less common, but also available, is the ability to pick a specific week of a year with <input type="week">:

Last but not least, you can pick a time with <input type="time">: