将12小时hh：mm AM / PM转换为24小时hh：mm

尝试这个

var time = $("#starttime").val();var hours = Number(time.match(/^(d+)/)[1]);var minutes = Number(time.match(/:(d+)/)[1]);var AMPM = time.match(/s(.*)$/)[1];if(AMPM == "PM" && hours<12) hours = hours+12;if(AMPM == "AM" && hours==12) hours = hours-12;var sHours = hours.toString();var sMinutes = minutes.toString();if(hours<10) sHours = "0" + sHours;if(minutes<10) sMinutes = "0" + sMinutes;alert(sHours + ":" + sMinutes);