英文:
Add one month to current Unix timestamp in javascript
问题
我要将这个时间戳 1688452200 增加一个月，但这不起作用。
const startdate = new Date('1688452200');const newstartDate = new Date(startdate.setMonth(startdate.getMonth() + 1));console.log('newDate:', newstartDate);const newStartDateTime = newstartDate.getTime();
英文:
I have this timestamp 1688452200
const startdate = new Date('1688452200')const newstartDate = new Date(startdate.setMonth(startdate.getMonth() + 1));console.log('newDate:', newstartDate);const newStartDateTime = newstartDate.getTime();
want to add 1 month to this timestamp but this is not working
答案1
得分: 2
需要做一些事情：
- UNIX时间戳位于UTC，因此我们需要添加时区偏移量
- 将结果的UNIX时间戳转换为JS时间戳（乘以毫秒）。
const startdate = new Date((unixTimestamp - new Date().getTimezoneOffset() * 60) * 1000);console.log('startdate:', startdate);startdate.setMonth(startdate.getMonth() + 1);console.log('newDate:', startdate);
<script>const unixTimestamp = (new Date(2023, 4, 31).getTime() / 1000).toString();</script>
英文:
You need a few things here:
- a UNIX timestamp is in the UTC so we need to add the timezone offset to it
- convert the resulting UNIX timestamp to the JS timestamp (multiply by milliseconds).
<!-- begin snippet: js hide: false console: true babel: false -->
<!-- language: lang-js -->
const startdate = new Date((unixTimestamp - new Date().getTimezoneOffset() * 60) * 1000);console.log('startdate:', startdate);startdate.setMonth(startdate.getMonth() + 1);console.log('newDate:', startdate);
<!-- language: lang-html -->
<script>const unixTimestamp = (new Date(2023,4,31).getTime() / 1000).toString();</script>
<!-- end snippet -->
答案2
得分: 0
const oneMonthToUnixTimestamp = () => {let date = new Date();const month = date.getMonth() + 1;let year = date.getYear();const epoch = date.valueOf();let dayToHr = 24;const hrToMin = 60;const minToSec = 60;const secToMill = 1000;let numberofdate = new Date(year, month, 0).getDate();let addedmillisec = numberofdate * dayToHr * hrToMin * minToSec * secToMill;return epoch + addedmillisec}console.log(oneMonthToUnixTimestamp())
英文:
const oneMonthToUnixTimestamp = () => {let date = new Date();const month = date.getMonth() + 1;let year = date.getYear();const epoch = date.valueOf();let dayToHr = 24;const hrToMin = 60;const minToSec = 60;const secToMill = 1000;let numberofdate = new Date(year, month, 0).getDate();let addedmillisec = numberofdate * dayToHr * hrToMin * minToSec * secToMill;return epoch + addedmillisec}console.log(oneMonthToUnixTimestamp())
答案3
得分: -1
const startdate = new Date(1688452200*1000);
const newstartDate = new Date(startdate.setMonth(startdate.getMonth() + 1));
console.log('newDate:', newstartDate);
const newStartDateTime = newstartDate.getTime();
英文:
const startdate = new Date(1688452200*1000);const newstartDate = new Date(startdate.setMonth(startdate.getMonth() + 1));console.log('newDate:', newstartDate);const newStartDateTime = newstartDate.getTime();
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