Question

我正在尝试获取两个日期之间的月数

但是由于某种原因，diff方法有时会返回正确的数字，而有时会错误（一个月）（取决于我猜的日期）

        var estDate = "some date"; //2022-06-02
        estDate = estDate.toString();
        var estDateYear = estDate.substring(0,4);
        var estDateMonth = estDate.substring(4, 6);
        var estDateDay = estDate.substring(6, 8);

        estDate = estDateYear + '-' + estDateMonth + '-' + estDateDay;

        //first date
        estDate = moment(estDate);


        //actual date
        var date = moment();


        //DIFF
        var diff= date.diff(estDate, 'month'); 
        diff= diff.toString();

知道为什么会这样吗？

Answer 1

您应将diff方法中的第三个参数设置为true。这将返回一个月的分数而不是整数。然后，您可以根据需要舍入以返回所需的数字。

var diff = Math.floor(date.diff(estDate, 'month', true));

文档
https://momentjs.com/docs/#/displaying/difference/
By default, moment#diff will truncate the result to zero decimal places, returning an integer. If you want a floating point number, pass true as the third argument.

Answer 2

为什么不仅仅使用estDate来解析moment字符串？

var estDate = "2022-06-02"; //2022-06-02
estDate = moment(estDate, "YYYY-MM-DD");

//actual date
var date = moment();

//DIFF
var diff= date.diff(estDate, 'month'); 
diff= diff.toString();

Answer 3

// Simply use Momentjs Formation library

//let estDate = "2022-06-02";
let estDate = moment("2022-06-02", "YYYY-MM-DD");
let actualdate = moment();
let diff= actualdate.diff(estDate, 'M'); 
diff= diff.toString();
console.log(diff);

<div>
 <script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.3/moment.min.js"></script>
</div>

如何获得两个日期之间的确切月份数？

3 个答案: