JS 获得时间的各个部分

var time = new Date()
 var hour = time.getHours()
 var minute = time.getMinutes()
 var second = time.getSeconds()
 var timevalue = ""+((hour > 12) ? hour-12:hour)
 timevalue +=((minute < 10) ? ":0":":")+minute
 timevalue +=((second < 10) ? ":0":":")+second
 timevalue +=((hour >12 ) ? " PM":" AM")
 //输出timevalue便可

 

var Tday = new Date("2011/10/12 11:12:13");

//能够设定指定时间