By far the best addition is the date picker type called date and datetime (there are other additional date/time types such as time, week, month datetime-local as well).
迄今为止最好的新增元素，名为date和datetime的日期选择器类型（还有其他额外的date/time类型，如时间，星期，月份，以及本地日历）。
YUI-calendar and Joda time based date picker (wicket-datetime)
基于YUI-calendar和Joda time的date picker（wicket-datetime）
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