计算时间差天数

js计算时间差封装函数

//yyyy-MM-dd HH:MM:SS   格式
function getNowFormatDate() {
    var date = new Date();
    var seperator1 = "-";
    var seperator2 = ":";
    var month = date.getMonth() + 1;
    var strDate = date.getDate();
    if (month >= 1 && month <= 9) {
        month = "0" + month;
    }
    if (strDate >= 0 && strDate <= 9) {
        strDate = "0" + strDate;
    }
    var currentdate = date.getFullYear() + seperator1 + month + seperator1 + strDate
            + " " + date.getHours() + seperator2 + date.getMinutes()
            + seperator2 + date.getSeconds();
    return currentdate;
}
//计算日期天数差
function diff(startDate, endDate){
    //startDate,endDate:yyyy-MM-dd
    var arr1 = startDate.split('-')
    var arr2 = endDate.split('-')
    var sDate = new Date(arr1[1] + '-' + arr1[2] + '-' + arr1[0])
    var eDate = new Date(arr2[1] + '-' + arr2[2] + '-' + arr2[0])
    var iDays = parseInt(Math.abs(sDate - eDate) / 1000 / 60 / 60 / 24)
    return iDays;
}