I have a function that I am trying to get to format the date and time or just the date at the moment.
function(){
var d = new Date();
var n = d.getTime();
return 'VZW Dfill - ' + n;}
What I have tried
function(){
var d = new Date();
return 'VZW Dfill - ' + d;}
This returns
VZW Dfill - Thu Jan 30 2020 103924 GMT-0500 (Eastern Standard Time)
I would like the format to be 2020JAN30
I have also tried the following but this does not work
function(){
var d = new Date('YYYYMDD');
return 'VZW Dfill - ' + d;}
The above breaks the function.
Any help is appreciated.
This is actually surprisingly complex using pure JavaScript. Here's one (of many) solutions:
var now = new Date();
var months = ['JAN', 'FEB', 'MAR', 'APR', 'MAY', 'JUN', 'JUL', 'AUG', 'SEP', 'OCT', 'NOV', 'DEC'];
var formattedDate = now.getFullYear() + months[now.getMonth()] + now.getDate();
alert(formattedDate);
Using your code from above, write the following function:
function(){
var d = new Date();
var months = ['JAN', 'FEB', 'MAR', 'APR', 'MAY', 'JUN', 'JUL', 'AUG', 'SEP', 'OCT', 'NOV', 'DEC'];
d = d.getFullYear() + months[d.getMonth()] + d.getDate();
return 'VZW Dfill - ' + d;}
There is a pretty extensive thread about formatting JavaScript dates here. Most of them involve (common) third party packages.
You can use also locale
console.log(today.toLocaleDateString("zh-TW")); // 2020/1/30
Related
I have a Date() object in Javascript. How can I convert it to show "Month Year" (example: Oct 2021).
I tried the following code and it works too. However, I have to convert a lot of dates to this format and it has performance issues.
const date = new Date();
const month = date.toLocaleString('default', { month: 'short' });
const year = date.toLocaleString('default', { year: 'numeric' });
Note: I don't want to use JQuery or other libraries.
If performance is such a concern, why not just reduce some complexity and use getMonth()/getYear() and manually map the abbreviated month names?
const date = new Date();
const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
console.log(months[date.getMonth()] + " " + date.getFullYear())
It's provably faster than the other methods posited here, even with the requirement to declare months.
i have two dates Date1 and Date2 in format ("Wed Apr 21 2020") .I want to compare only months from two date strings.Forex ample Date1="Fri Sep 13 2020" and Date2="Sun Feb 21 2020" and now i want to compare September from DATE1 with February from DATE2 in such a way .
if(September>February){
var X=greater
}else{
var X=smaller
}
how can i achieve this in JAVASCRIPT
The easiest way is to extract the month from the string and get its index by using an array. See an example below:
const Date1 = 'Fri Sep 13 2020';
const Date2 = 'Sun Feb 21 2020';
const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
const getMonthIndex = date => months.indexOf(date.split(' ')[1]);
if (getMonthIndex(Date1) > getMonthIndex(Date2)) {
// var X=greater
console.log('greater');
} else {
// var X=smaller
console.log('smaller');
}
I have this String :
var str = "Thu, 10 Apr 2014 09:19:08 +0000";
I would like to get this format : "10 Apr 2014"
How can i do that?
var str = "Thu, 10 Apr 2014 09:19:08 +0000";
var d = new Date(str);
var month = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
var b= d.getDate()+' '+month[d.getMonth()]+' '+d.getFullYear();
alert(b);
Check the result in
JSFiddle
You can split the string on spaces and take the second to the fourth items and join:
var d = str.split(' ').slice(1, 4).join(' ');
Demo: http://jsfiddle.net/Guffa/7FuD6/
you can use the substring() method like this,
var str = "Thu, 10 Apr 2014 09:19:08 +0000";
var res = str.substring(5,15);
var str = "Thu, 10 Apr 2014 09:19:08 +0000",
months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
d = new Date(str);
d.getDate() + " " + months[d.getMonth()] + " " + d.getFullYear(); //"10 Apr 2014"
The date string you have can be passed into the Date constructor to get a date object, d. The date object has various methods to that gives day, year, month, time etc. Since months are returned as an integer and we need the name, we use an array called months.
I am getting string data from a Google Calendar feed. The date is already set, by parameter, with the desired timezone.
2014-05-24T07:00:00.000-04:00
I know there are wonderful libraries like moment.js and date.js this will help format my date, but they also work with a Date object, which throws my date into a client's culture. At that point I am then juggling offsets. Would rather avoid that.
Other than a lot of conditional string manipulation, is there a simple way to do this, or I am oversimplifying (again)?
Example:
2014-05-24T07:00:00.000-04:00 to May, 24, 2014 - 7:00 AM
The following short code will parse your date, using the values present, without offsetting by the timezone:
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
var res = /(\d+)\-(\d+)\-(\d+)T(\d+)\:(\d+)/
.exec('2014-05-24T07:00:00.000-04:00');
var am = (res[4] < 12);
var date = months[res[2]-1] + ', ' + res[3] + ', ' + res[1];
var time = am ? (parseInt(res[4]) + ':' + res[5] + 'AM') :
(res[4] - 12 + ':' + res[5] + 'PM');
var formatted = date + ' - ' + time;
console.log(formatted);
You can convert this string into a Date object like below,
new Date("2014-05-24T07:00:00.000-04:00")
Then you can easily convert this date object into your desired format by using any of the jQuery libraries such as jquery.globalize.js ...
Here you go:
var d = new Date('2014-05-24T07:00:00.000-04:00');
var calendar = {
months: {
full: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
short: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
},
days: {
full: ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'],
short: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
}
};
console.log(calendar.months.short[d.getMonth()]+', '+d.getDate()+', '+d.getFullYear());
A simple function to reformat the string is:
function reformatDateString(s) {
s = s.match(/\d+/g);
var months = ['January','February','March','April','May','June','July',
'August','September','October','November','December'];
var ampm = s[3]<12? 'AM':'PM';
return months[--s[1]] + ', ' + +s[2] + ', ' + s[0] + ' - ' +
(s[3]%12 || 12) + ':' + s[4] + ' ' + ampm;
}
console.log(reformatDateString('2014-05-24T07:00:00.000-04:00')); // May, 24, 2014 - 7:00 AM
console.log(reformatDateString('2014-05-24T17:00:00.000-04:00')); // May, 24, 2014 - 5:00 PM
console.log(reformatDateString('2014-05-04T00:20:00.000-04:00')); // May, 4, 2014 - 12:20 AM
Which also assumes that you don't want leading zeros on single digit numbers except for the minutes, as a time like 12:5 PM isn't as readable (to me) as 12:05 PM.
Also you may need to modify the months array, it's not clear in the OP whether you want full month names or abbreviations (Jan, Feb, etc.).
This date converter function working fine on chrome but not on Firefox! any one can help figure out problem.
function converter(string) {
var d = new Date(string);
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'sep', 'Oct', 'Nov', 'Dec'];
var hour = d.getHours();
return d.getFullYear() + ' ' + months[d.getMonth()] + ' ' + d.getDate() + ' | ' + (hour % 12) + ' ' + d.getMinutes() + ':' + (hour > 11 ? 'pm' : 'am');
}
alert(converter('2013-03-10 19:43:55'))
This will fix your code:
converter('2013-03-10T19:43:55')
Please note the T between the date and the time.
Edit: The datetime string should be an ISO 8601 format. Read more about it here.
Chrome is more forgiving of bad date formats, but that's technically not valid as input to Date.parse or new Date. You should make sure that it's a correctly formatted date (RFC2822 or ISO 8601), or if you want to allow more freeform input, use a library like http://www.datejs.com/
More information: https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Date/parse