javascript - 在JavaScript中2个日期之间有区别吗？ [重复](Get difference between 2 dates in JavaScript? [duplicate])

Question

This question already has answers here) : 这个问题已经在这里有了答案) ：)

How do I get the number of days between two dates in JavaScript? 如何获取JavaScript中两个日期之间的天数？) (35 answers) （35个答案）)

Closed 4 years ago . 4年前关闭。)

How do I get the difference between 2 dates in full days (I don't want any fractions of a day) (如何获得整天2个日期之间的差额（我不想一天中的任何时间）)

var date1 = new Date('7/11/2010');
var date2 = new Date('12/12/2010');
var diffDays = date2.getDate() - date1.getDate(); 
alert(diffDays)

I tried the above but this did not work. (我尝试了上述方法，但这没有用。)

  ask by chobo2 translate from so

Answer 1

Here is one way : (这是一种方法 ：)

const date1 = new Date('7/13/2010');
const date2 = new Date('12/15/2010');
const diffTime = Math.abs(date2 - date1);
const diffDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24)); 
console.log(diffDays);

Observe that we need to enclose the date in quotes. (请注意，我们需要将日期用引号引起来。) The rest of the code gets the time difference in milliseconds and then divides to get the number of days. (其余代码获得时差（以毫秒为单位），然后除以天数。) Date expects mm/dd/yyyy format. (日期应采用mm / dd / yyyy格式。)