如何在正确的时刻指定时区和日期对象格式，以便我不会收到无效日期和不推荐使用的时刻警告？

Question

I am trying to set the date format and timezone and then when I try to format moment to extract the date it just returns Invalid date.

When I do it this way I do not get moment is deprecated.

let data = moment(date, 'YYYY-MM-DD HH:MM').tz(TIMEZONE); //moment('2014-06-01 12:00:00Z').tz(TIMEZONE); // TIMEZONE = 'America/New_York'
console.log(data.format('MM/DD/YYYY'))
let value = inventoryBase.lastUpdated + SPACE + data.format('MM/DD/YYYY') + ' at ' + data.format('LT') + SPACE + moment.tz([2012, 0], TIMEZONE).zoneAbbr();
value = value + ' by ' + lastUpdated.editedBy;

But the output of value is incorrect:

Last updated Invalid date at Invalid date EST by System

When I do it this way I get moment is deprecated.

let data = moment(date).tz(TIMEZONE); //moment('2014-06-01 12:00:00Z').tz(TIMEZONE);
let value = inventoryBase.lastUpdated + SPACE + data.format('MM/DD/YYYY') + ' at ' + data.format('LT') + SPACE + moment.tz([2012, 0], TIMEZONE).zoneAbbr();
value = value + ' by ' + lastUpdated.editedBy;

But the output of value is correct:

Last updated 05/01/2019 at 3:59 AM EST by System

Moment is deprecated error:

Deprecation warning: value provided is not in a recognized RFC2822 or ISO 
format. moment construction falls back to js Date(), which is not reliable 
across all browsers and versions. Non RFC2822/ISO date formats are 
discouraged and will be removed in an upcoming major release. Please refer 
to http://momentjs.com/guides/#/warnings/js-date/ for more info.

Answer 1

Try the following:

const data = moment.tz(date, 'YYYY-MM-DD HH:mm:ssZ', TIMEZONE);
const value = `${inventoryBase.lastUpdated} ${data.format('L [at] LT zz')} by ${lastUpdated.editedBy}`;

A few other points:

• In your original code, it didn't work correctly because your format string didn't match the format of the data. MM is months, while mm is minutes, and you didn't include seconds.

• In your second attempt, you got the deprecation warning because you provided data in a format that isn't in the list of known supported strings .

• You were taking the zone abbreviation for an arbitrary date instead of the one in question. Time zone abbreviations vary by date, so it's better to get it from the same moment you're working with.

• It's not good to mix tokenized formats ( MM/DD/YYYY ) and locale-aware formats ( LT ) in the same output string. I used L instead, as it gets the date format for the locale you're working with.

• Because you have a Z in your data, it will always be treated as UTC. Thus you can skip right to parsing it with moment.tz . If you didn't have the Z , then you would go through moment.utc(data, format).tz(timezone) instead.

• I used JavaScript template literals in my answer because I think they are cleaner than concatenation for cases like this.