js 获取今天以及前一周/前20天时间

Dear 丶 2023-10-06 13:42 20阅读 0赞

## [js 获取今天以及前一周/前20天时间][js _20] ##

<table> 
 <tbody> 
 <tr> 
 <td> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 </td> 
 <td> <code>var</code>&nbsp;<code>end =&nbsp;</code><code>new</code>&nbsp;<code>Date();</code> <code>var</code>&nbsp;<code>start =&nbsp;</code><code>new</code>&nbsp;<code>Date();</code> <code>console.log(</code><code>'==========今天============='</code><code>)</code> <code>console.log(start);</code> <code>console.log(end);</code> <code>console.log(</code><code>'==========今天============='</code><code>)</code> <code>console.log(start.getFullYear());</code> <code>console.log(start.getMonth());</code> <code>console.log(start.getDate());</code> <code>console.log(</code><code>'==========20天前============='</code><code>)</code> <code>start.setDate(start.getDate() - 20);&nbsp;&nbsp;&nbsp;</code><code>//day和month会自动计算到上一个月的</code> <code>console.log(start.getFullYear());</code> <code>console.log(start.getMonth());</code> <code>console.log(start.getDate());</code> &nbsp; &nbsp; <code>var</code>&nbsp;<code>startYear = start.getFullYear();</code> <code>var</code>&nbsp;<code>startMonth = start.getMonth() + 1 &gt;= 10 ? start.getMonth() + 1 :&nbsp;</code><code>"0"</code>&nbsp;<code>+ (start.getMonth() + 1);</code> <code>var</code>&nbsp;<code>startDate = start.getDate() &gt;= 10 ? start.getDate() :&nbsp;</code><code>"0"</code>&nbsp;<code>+ start.getDate();</code> &nbsp; <code>var</code>&nbsp;<code>endYear = end.getFullYear();</code> <code>var</code>&nbsp;<code>endtMonth = end.getMonth() + 1 &gt;= 10 ? end.getMonth() + 1 :&nbsp;</code><code>"0"</code>&nbsp;<code>+ (end.getMonth() + 1);</code> <code>var</code>&nbsp;<code>endDate = end.getDate() &gt;= 10 ? end.getDate() :&nbsp;</code><code>"0"</code>&nbsp;<code>+ end.getDate();</code> <code>startDate1 = startYear +&nbsp;</code><code>"-"</code>&nbsp;<code>+ startMonth +&nbsp;</code><code>"-"</code>&nbsp;<code>+ startDate;</code> <code>endDate1 = endYear +&nbsp;</code><code>"-"</code>&nbsp;<code>+ endtMonth +&nbsp;</code><code>"-"</code>&nbsp;<code>+ endDate;</code> <code>console.log(startDate1);</code> <code>console.log(endDate1)</code> </td> 
 </tr> 
 </tbody> 
</table>

console输出:

![format_png][]

转载自：[Andrew\_F][js _20]

[js _20]: https://www.cnblogs.com/Andrew520/p/9317308.html
[format_png]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTIyMzY4NS8yMDE4MDcvMTIyMzY4NS0yMDE4MDcxNjEzNTAzMjQyNi0xODEzMDMyNjc4LnBuZw?x-oss-process=image/format,png