遍历时间 并获取当前时间以及当前时间后2小时50分钟的时间

var mydate = new Date();
var hours = mydate.getHours(); //获取当前小时数(0-23)
var start_h = "";
if(hours==0){
start_h = "0"+hours;
}else if(hours>0 && hours<10){
var hours0 = hours -1;
start_h = "0"+hours0;
}else{
var hours1 = hours -1;
start_h = hours1;
}
var end_h = hours+1;
if(end_h<10){
end_h = "0"+end_h;
}
    if(end_h>23){
    end_h = end_h-1;
    }
var start_time = start_h+":00";
var end_time = end_h+":50";

var str;
for (var i = 1; i <=24; i++) {
for (var j = 0; j < 60; ) {
if(j==0 || i==24||i<10){
if(i<10){
if(j==0){
str="0"+i+":"+j+"0";
}else{
str="0"+i+":"+j;
}
}else{
str=i+":"+j+"0";
}
}else{
str=i+":"+j;
}
$("#startTime").append("<option value='"+str+"'>"+str+"</option>");
$("#endTime").append("<option value='"+str+"'>"+str+"</option>");
if(j<60){
j+=10;
}
if(i==24){
break;
}
}
}
$("#startTime").val(start_time);
$("#endTime").val(end_time);