我试图使用momentjs来检查给定的日期是今天还是将来。
这是我目前所拥有的:
<script type="text/javascript" src="http://momentjs.com/downloads/moment.min.js"></script>
<script type="text/javascript">
var SpecialToDate = '31/01/2014'; // DD/MM/YYYY
var SpecialTo = moment(SpecialToDate, "DD/MM/YYYY");
if (moment().diff(SpecialTo) > 0) {
alert('date is today or in future');
} else {
alert('date is in the past');
}
</script>
代码评估我的日期(2014年1月31日)作为过去的日期。
知道我哪里做错了吗?
当前回答
最简单的答案是:
const firstDate = moment('2020/10/14'); // the date to be checked
const secondDate = moment('2020/10/15'); // the date to be checked
firstDate.startOf('day').diff(secondDate.startOf('day'), 'days'); // result = -1
secondDate.startOf('day').diff(firstDate.startOf('day'), 'days'); // result = 1
它将检查midnight值并返回准确的结果。当两个日期之间的时间差小于24小时时，它也会工作。
其他回答
在阅读文档:http://momentjs.com/docs/#/displaying/difference/之后，您必须将diff函数视为减号运算符。
// today < future (31/01/2014)
today.diff(future) // today - future < 0
future.diff(today) // future - today > 0
因此，你必须扭转你的状况。
如果你想检查是否一切正常，你可以在函数中添加一个额外的参数:
moment().diff(SpecialTo, 'days') // -8 (days)
用最简单的一个来检查未来的日期
if(moment().diff(yourDate) >= 0)
alert ("Past or current date");
else
alert("It is a future date");
我想用它做别的事情，但最终发现了一个你可以尝试的技巧
somedate。calendar(compareDate， {sameDay: '[Today]'})=='今天'
var d = moment(); var today = moment(); console.log("Usign today's date, is Date is Today? ",d.calendar(today, { sameDay: '[Today]'})=='Today'); var someRondomDate = moment("2012/07/13","YYYY/MM/DD"); console.log("Usign Some Random Date, is Today ?",someRondomDate.calendar(today, { sameDay: '[Today]'})=='Today'); var anotherRandomDate = moment("2012/07/13","YYYY/MM/DD"); console.log("Two Random Date are same date ? ",someRondomDate.calendar(anotherRandomDate, { sameDay: '[Today]'})=='Today'); <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
如果firstDate相同或在(future) secondDate之后返回true否则返回false。Toda是firstDate = new Date();
static isFirstDateSameOrAfterSecondDate(firstDate: Date, secondDate: Date): boolean {
var date1 = moment(firstDate);
var date2 = moment(secondDate);
if(date1 && date2){
return date1.isSameOrBefore(date2,'day');
}
return false;
}
有isSame, isBefore和isAfter为日比较时刻的例子;
static isFirstDateSameSecondDate(firstDate: Date, secondDate: Date): boolean {
var date1 = moment(firstDate);
var date2 = moment(secondDate);
if (date1 && date2) {
return date1.isSame(date2,'day');
}
return false;
}
static isFirstDateAfterSecondDate(firstDate: Date, secondDate: Date): boolean {
var date1 = moment(firstDate);
var date2 = moment(secondDate);
if(date1 && date2){
return date1.isAfter(date2,'day');
}
return false;
}
static isFirstDateBeforeSecondDate(firstDate: Date, secondDate: Date): boolean {
var date1 = moment(firstDate);
var date2 = moment(secondDate);
if(date1 && date2){
return date1.isBefore(date2,'day');
}
return false;
}
如果你只需要知道哪个更大，你也可以直接比较它们:
var SpecialToDate = '31/01/2014'; // DD/MM/YYYY
var SpecialTo = moment(SpecialToDate, "DD/MM/YYYY");
if (moment() > SpecialTo) {
alert('date is today or in future');
} else {
alert('date is in the past');
}
希望这能有所帮助!
