To begin, I retrieve the date for the first day of the month:
var currentDate = new Date();
var beginningOfMonth = new Date(currentDate.getFullYear(), currentDate.getMonth(), 1);
Next, I convert this date to ISO format:
beginningOfMonth = beginningOfMonth.toISOString();
I was puzzled by the fact that 2019-05-31 was displayed as the first day rather than 2019-06-01. Can you explain why?
One way to manipulate the date format is by using a regular expression with the replace method:
/(\d{4})-(\d{2})-(\d{2}).+/
// Initialize a UTC date object
var date = new Date(new Date().toLocaleString("en-US", {timeZone: "UTC"}))
// Set the day while keeping the month/day unchanged in ISO format
date.setDate(1)
// Format the date
let formatted = date.toISOString().replace(/(\d{4})-(\d{2})-(\d{2}).+/, '$3-$2-$1')
console.log(formatted)When manipulating the default JavaScript date, it is important to consider that converting it to a different timezone could result in a discrepancy in the final date.
Believe in yourself, you have what it takes
let currentDate = new Date().toISOString().slice(0, 8) + '01';
console.log(currentDate);Working with the date object in javascript can be somewhat challenging. When a date is created, it defaults to the local timezone, but using toISOString() retrieves the date in UTC format. The code snippet below demonstrates how to convert the date to ISO format while keeping it in the original time zone.
var currentDate = new Date();
var firstDayOfMonth = new Date(currentDate.getFullYear(), currentDate.getMonth(), 1);
var day = 0;
if (firstDayOfMonth.getDate() < 10) {
day = '0' + firstDayOfMonth.getDate();
}
var month = 0;
if ((firstDayOfMonth.getMonth() + 1) < 10) {
// since months are zero indexed, we need to add 1
month = '0' + (firstDayOfMonth.getMonth() + 1);
}
firstDayOfMonth = firstDayOfMonth.getFullYear() + '-' + month + '-' + day;
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