JS发送信息时计算当前日期与所选日期之间的提示函数

蓝色飞扬

function caculateDateTip(dt){
var MinMilli = 1000 * 60;
var HrMilli = MinMilli * 60;
var DyMilli = HrMilli * 24;
var nowFullDate = new Date();

var nowDate = new Date(nowFullDate.getFullYear(),nowFullDate.getMonth(),nowFullDate.getDate());
var nowWeek = nowDate.getDay();
var dtWeek = dt.getDay();

var t = Date.parse(dt) - Date.parse(nowDate);
var mday = Math.floor(Math.abs(t / DyMilli));
var tipStr = "";

if(mday <= 2){
switch(mday){
case 0: tipStr = "今天"; break;
case 1: tipStr = "明天"; break;
case 2: tipStr = "后天"; break;
}
}else{
var we = dtWeek - nowWeek;
var ndWeek = nowWeek + mday;
if(nowWeek == 0){
if(ndWeek <= 7){
switch(ndWeek){
case 3: tipStr = "下周三";break;
case 4: tipStr = "下周四";break;
case 5: tipStr = "下周五";break;
case 6: tipStr = "下周六";break;
case 7: tipStr = "下周日";break;
}
}else{
tipStr = dt.format("yyyy-MM-dd");
}
}else{
if(ndWeek <= 14){
switch(ndWeek){
case 3: tipStr = "本周三";break;
case 4: tipStr = "本周四";break;
case 5: tipStr = "本周五";break;
case 6: tipStr = "本周六";break;
case 7: tipStr = "本周日";break;
case 8: tipStr = "下周一";break;
case 9: tipStr = "下周二";break;
case 10: tipStr = "下周三";break;
case 11: tipStr = "下周四";break;
case 12: tipStr = "下周五";break;
case 13: tipStr = "下周六";break;
case 14: tipStr = "下周日";break;
}
}else{
tipStr = dt.format("yyyy-MM-dd");
}
}
}
return tipStr;
}