Translate GMT date string into PST date string and format output as 'mm/dd/yyyy

I have an array like this with elements

var getDaysArray = [
    "2021-10-28T08:00:00",
    "2021-10-27T08:00:00",
    "2021-10-31T03:00:00"
]

I need to get the following result MM/DD/YYYY - HH:MM PM Pacific Time

I was able to replace "-" with "/" using replace

for(var i = 0; i < getDaysArray.length; i  ) {
  document.write(getDaysArray[i].replace("-", "/"));
}

But I need to get the following result

10/28/2021 - 19:25

CodePudding user response：

Parse your input strings into dates and transform to desired locale string with appropriate set of options:

const datesArray = [
          "2021-10-28T08:00:00",
          "2021-10-27T08:00:00",
          "2021-10-31T03:00:00"
      ],
      
      translateDateStr = dateStr => {
        const [yyyy, mm, dd, hh, mi, ss] = dateStr.split(/[-T:]/)
        const date = new Date(yyyy, mm-1, dd, hh, mi, ss)
        
        return date
          .toLocaleString(
            'us-PT',
            {
              timeZone: 'America/Los_Angeles',
              hour12: false
            }
          )
          .slice(0,-3)
          .replace(', ', ' - ')
      },
      
      formattedDates = datesArray.map(translateDateStr)
      
console.log(formattedDates)

.as-console-wrapper{min-height:100%}

CodePudding user response：

Without using an outside library like momentjs, you'll have to re-format each array element and push them into a new array.

let formattedDays = [];
for(i = 0; i < getDaysArray.length; i  ) {
  const date = new Date(getDaysArray[i]);
  const month = date.getMonth() 1; //months go from 0-11
  const day = date.getDate();
  const year = date.getFullYear();
  const hour = date.getHours();
  const minutes = date.getMinutes();

  const dateString = month "/" date "/" year " - " hour ":" minutes
  formattedDays.push(dateString);
}

console.log(formattedDays);

CodePudding user response：

you had to use moment.js for this solution. your code might look like this code

var getDaysArray = [
    "2021-10-28T08:00:00",
    "2021-10-27T08:00:00",
    "2021-10-31T03:00:00"
]

getDaysArray.forEach(x=>{
    console.log(moment(Date.parse(x), 'DD.MM.YYYY HH:mm:ss'));
})