I need to check fox example 2117-09-15 00:00:41.0.
I saw similar topics but this var valid = (new Date(timestamp)).getTime() > 0;don't work.
If you want to check that a date is valid in MySQl then you could check that it is between some dates (min and max of mySql timestamp):
function isValid(dateString) {
var minDate = new Date('1970-01-01 00:00:01');
var maxDate = new Date('2038-01-19 03:14:07');
var date = new Date(dateString);
return date > minDate && date < maxDate;
}
Here is a fiddle for you to test: https://jsfiddle.net/x5hmyyrz/3/
As seen here: Checking if a date is valid in javascript, maybe you can use :
var date= new Date(timestamp)
valid = (date instanceof Date && !isNaN(date.valueOf()));
Related
If I define a date range using purely date strings in yyyy-mm-dd format, it appears comparison will work just fine without using the Date object:
const dateParts = '2021-12-15--2022-01-15'.split('--') // My date range
const startDate = dateParts.slice(0, 1) // '2021-12-15'
const endDate = dateParts.slice(1) // '2022-01-15'
const date = '2021-12-14'
// Test if date is within the range
console.log(date >= startDate && date <= endDate) // false
Using any date in the above example will test successfully if what I want is ensure that the date I'm looking for is within the range.
Why is this working? If javascript was, under the hood, evaluating the date strings as numbers, this should not be working. Is it maybe just implicitly assuming it's a date without me having to parse them using new Date(date)...?
Update: I'm not looking for solutions on how to do this using the Date object, I'd be more interested in examples where comparing dates this way would NOT work.
Your code works (Or if it looks like its working) because its just a basic string comparison and not the date comparison. To do a proper date comparison, you need to do the proper string to date conversion, and then compare them.
const dateParts = '2021-12-15--2022-01-15'.split('--') // My date range
const startDate = dateParts[0] // '2021-12-15'
const endDate = dateParts[1] // '2022-01-15'
const startDateArray = startDate.split("-").map(element => parseInt(element));
const endDateArray = endDate.split("-").map(element => parseInt(element));
const date = '2022-01-15'
const dateArray = date.split("-").map(element => parseInt(element));
// Test if date is within the range
console.log(new Date(dateArray[0], dateArray[1] - 1, dateArray[2]) >= new Date(startDateArray[0], startDateArray[1] - 1, startDateArray[2]) && new Date(dateArray[0], dateArray[1] - 1, dateArray[2]) <= new Date(endDateArray[0], endDateArray[1] - 1, endDateArray[2])) // false
This should solve your problem
const dateParts = '2021-12-15--2022-01-15'.split('--'); // My date range
const startDate = dateParts[1]; // '2021-12-15'
const endDate = dateParts[0]; // '2022-01-15'
const date = '2021-12-10'
// Test if date is within the range
alert(date < startDate && date < endDate)
I want to parse the following string with moment.js 2014-02-27T10:00:00 and output
day month year (14 march 2014)
I have been reading the docs but without success
http://momentjs.com/docs/#/parsing/now/
I always seem to find myself landing here only to realize that the title and question are not quite aligned.
If you want a moment date from a string:
const myMomentObject = moment(str, 'YYYY-MM-DD')
From moment documentation:
Instead of modifying the native Date.prototype, Moment.js creates a wrapper for the Date object.
If you instead want a javascript Date object from a string:
const myDate = moment(str, 'YYYY-MM-DD').toDate();
You need to use the .format() function.
MM - Month number
MMM - Month word
var date = moment("2014-02-27T10:00:00").format('DD-MM-YYYY');
var dateMonthAsWord = moment("2014-02-27T10:00:00").format('DD-MMM-YYYY');
FIDDLE
No need for moment.js to parse the input since its format is the standard one :
var date = new Date('2014-02-27T10:00:00');
var formatted = moment(date).format('D MMMM YYYY');
http://es5.github.io/#x15.9.1.15
moment was perfect for what I needed. NOTE it ignores the hours and minutes and just does it's thing if you let it. This was perfect for me as my API call brings back the date and time but I only care about the date.
function momentTest() {
var varDate = "2018-01-19 18:05:01.423";
var myDate = moment(varDate,"YYYY-MM-DD").format("DD-MM-YYYY");
var todayDate = moment().format("DD-MM-YYYY");
var yesterdayDate = moment().subtract(1, 'days').format("DD-MM-YYYY");
var tomorrowDate = moment().add(1, 'days').format("DD-MM-YYYY");
alert(todayDate);
if (myDate == todayDate) {
alert("date is today");
} else if (myDate == yesterdayDate) {
alert("date is yesterday");
} else if (myDate == tomorrowDate) {
alert("date is tomorrow");
} else {
alert("It's not today, tomorrow or yesterday!");
}
}
How to change any string date to object date (also with moment.js):
let startDate = "2019-01-16T20:00:00.000";
let endDate = "2019-02-11T20:00:00.000";
let sDate = new Date(startDate);
let eDate = new Date(endDate);
with moment.js:
startDate = moment(sDate);
endDate = moment(eDate);
Maybe try the Intl polyfill for IE8 or the olyfill service ?
or
https://github.com/andyearnshaw/Intl.js/
I was trying to compare the EndDate I received from the response to the current date but the EndDate from the response is string. Should I convert the request.EndDate to moment ?. What is the best way to address this issue ?
const today = new Date()
if(this.request.EndDate > today){
}
You can use Date directly:
const today = new Date();
const endDate = new Date('2020-04-23'); // replace with this.request.EndDate
if (endDate > today) {
document.querySelector('#date').innerHTML = 'is greater than';
}
<div id="date"></div>
my code below is in javascript, $('#date_start').change(function(){ is working fine, but when im using if else statement to compare the date inputted in my inputbox from the current date, nothing happens at all.
$(document).ready(function() {
$('#date_start').change(function(){
var startdate = $('#date_start').datepicker("getDate");
var today = new Date();
var tomorrow = today.add(2).day();
if(startdate.getTime() < today.getTime()){
document.getElementById('finish').disabled = true;
}
else{
Remove Time from both of Date and compare it.
String input = "2012/01/20 12:05:10.321";
DateFormat inputFormatter = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss.SSS");
Date date = inputFormatter.parse(input);
DateFormat outputFormatter = new SimpleDateFormat("MM/dd/yyyy");
String output = outputFormatter.format(date);
I want to parse the following string with moment.js 2014-02-27T10:00:00 and output
day month year (14 march 2014)
I have been reading the docs but without success
http://momentjs.com/docs/#/parsing/now/
I always seem to find myself landing here only to realize that the title and question are not quite aligned.
If you want a moment date from a string:
const myMomentObject = moment(str, 'YYYY-MM-DD')
From moment documentation:
Instead of modifying the native Date.prototype, Moment.js creates a wrapper for the Date object.
If you instead want a javascript Date object from a string:
const myDate = moment(str, 'YYYY-MM-DD').toDate();
You need to use the .format() function.
MM - Month number
MMM - Month word
var date = moment("2014-02-27T10:00:00").format('DD-MM-YYYY');
var dateMonthAsWord = moment("2014-02-27T10:00:00").format('DD-MMM-YYYY');
FIDDLE
No need for moment.js to parse the input since its format is the standard one :
var date = new Date('2014-02-27T10:00:00');
var formatted = moment(date).format('D MMMM YYYY');
http://es5.github.io/#x15.9.1.15
moment was perfect for what I needed. NOTE it ignores the hours and minutes and just does it's thing if you let it. This was perfect for me as my API call brings back the date and time but I only care about the date.
function momentTest() {
var varDate = "2018-01-19 18:05:01.423";
var myDate = moment(varDate,"YYYY-MM-DD").format("DD-MM-YYYY");
var todayDate = moment().format("DD-MM-YYYY");
var yesterdayDate = moment().subtract(1, 'days').format("DD-MM-YYYY");
var tomorrowDate = moment().add(1, 'days').format("DD-MM-YYYY");
alert(todayDate);
if (myDate == todayDate) {
alert("date is today");
} else if (myDate == yesterdayDate) {
alert("date is yesterday");
} else if (myDate == tomorrowDate) {
alert("date is tomorrow");
} else {
alert("It's not today, tomorrow or yesterday!");
}
}
How to change any string date to object date (also with moment.js):
let startDate = "2019-01-16T20:00:00.000";
let endDate = "2019-02-11T20:00:00.000";
let sDate = new Date(startDate);
let eDate = new Date(endDate);
with moment.js:
startDate = moment(sDate);
endDate = moment(eDate);
Maybe try the Intl polyfill for IE8 or the olyfill service ?
or
https://github.com/andyearnshaw/Intl.js/