如何使用矩JS从开始日期和结束日期获取周数

Question

How to get the week count from the start date and end date using moment JS. Then I want to push it into an array. If a week is more than one week, I want to show like this const result = [1, 2, 3];

const dateStart = moment(1517812701107).format('DD-MM-YYYY');
const dateEnd = moment(1518331101107).format('DD-MM-YYYY');

From this start date and end date I need to get the number for week array. Is it possible in moment JS.

Answer 1

First of all, you don't want to format your date just yet or you'll just have a string representation, not a moment instance. Once you've taken care of that it's as simple as using diff :

 const dateStart = moment(1517812701107);
 const dateEnd = moment(1518331101107);
 const weeksBetween = dateEnd.diff(dateStart, 'weeks');

As for turning that into a progression array, you could simply loop through the result:

 const result = []
 for (let i = 1; i <= weeksBetween; i++) {
   result.push(i)
 }

The timestamps you provided are less than a week apart and will result in 0 . If you are aiming to find the exact ratio, add a floating point flag for the third variable:

 dateEnd.diff(dateStart, 'weeks', true); // 0.8571428571428571

Source: https://momentjs.com/docs/#/displaying/difference/

Answer 2

You can try diff function, Try the following code. Hope this helps.

const dateStart = moment(1507812701107);
const dateEnd = moment(1518331101107);
const result = Array(dateEnd.diff(dateStart, 'week')).fill().map((e,i)=>i+1)