比较JavaScript中三个数组的数据

Question

我需要制作某种计算器，并且要在使用三个不同的数组时执行此操作...

var = Month; 
var = Num_of_Month;
var = Days_of_Month;
var = Year;

  Month = new Array("Jan", "Feb", "March", "April", "May", "June", "July", "Aug", "Sept", "Oct", "Nov", "Dec");
  Num_of_Month = new Array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
  Days_of_Month = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); 
  Year = new Array(2014, 2015, 2016);

我如何比较它们？

Answer 1

如果只想获取用户选择的日期并计算它们之间的天数，并且如果您真正使用的是日期选择器，则可以不使用3个数组来执行此操作。

查看这个小提琴以获得一个想法。

$("#StartDate").datepicker({
    changeMonth: true,
    changeYear: true,
});
$("#EndDate").datepicker({
    changeMonth: true,
    changeYear: true,        
    onSelect: function () {
        datediff();
    }
});

function datediff() {
    if (($('#StartDate').val().length !== 0) && ($('#EndDate').val().length !== 0)) {

        var StartDate = $('#StartDate').datepicker('getDate');
        var EndDate = $('#EndDate').datepicker('getDate');
        //Divide by 1000ms, 60secs, 60mins, 24hours - you get number of days.
        var numOfDays = Math.abs(new Date(EndDate - StartDate))/1000/60/60/24;
        alert(numOfDays + ' Days');
    }
}