js判斷兩個yyyy-MM-dd格式的日期是否在同一周內
var date1 = $("#datepicker3").val();//日期外掛選擇的值
var date2 = $("#datepicker4").val();
var arr = date1.split("-");
var chooseDate1 = "";
var chooseDate2 = "";
chooseDate1 = arr[0] + arr[1] + arr[2]; //開始日期
var arrs = date2.split("-");
chooseDate2 = arrs[0] + arrs[1] + arrs[2]; //結束日期
var startDate = getFirstDateOfWeek(new Date(date1));
var endDate = getLastDateOfWeek(new Date(date1));
var weekstarttime = "";
var weekendtime = "";
mon1 = (startDate.getMonth() + 1) + "";
day1 = startDate.getDate() + "";
if (mon1 < 10) {
mon1 = "0" + mon1;
}
if (day1 < 10) {
day1 = "0" + day1;
}
weekstarttime = startDate.getFullYear() + "" + mon1 + "" + day1;
mon2 = (endDate.getMonth() + 1) + "";
day2 = endDate.getDate() + "";
if (mon2 < 10) {
mon2 = "0" + mon2;
}
if (day2 < 10) {
day2 = "0" + day2;
}
weekendtime = endDate.getFullYear() + "" + mon2 + "" + day2;
if (chooseDate2 > weekendtime || chooseDate2 < chooseDate1) {
alert("你只能選擇開始日期本週內的日期，請確認");
$("#datepicker4").val("");
}