Develop Reference

Disable Weekends

Hello I wish you could help block weekends with type date
I have type date:
input class="form-control" type="date" id="date1" min="2021-01-01" name="calendario"

This is not my code this is your answer by user: 1444609
code written by: user:1444609
const picker = document.getElementById('date1');
picker.addEventListener('input', function(e){
var day = new Date(this.value).getUTCDay();
if([6,0].includes(day)){
e.preventDefault();
this.value = '';
alert('Weekends not allowed');
}
});
<input id="date1" size="60" type="date" format="MM/DD/YYYY" placeholder="MM/DD/YYYY" />

How to set the year value in input date

I want to set just the year in my input date
var dateVal = $('#mydate').val();
new Date(dateVal).setFullYear(2015);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<label for="mydate">My input</label>
<input id="mydate" type="date">

It's probably not the most effective one, but try this:
function clicked() {
alert(new Date(document.getElementById("year").value, 01, 01, 00, 00, 00, 00));
}
<input type="number" name="year" min="1000" max="9999" id="year">
<input type="button" onclick="clicked()" value="Click Me!">
This gives me a year right. You can change the min and max value of the text box.

Try below code, Here you can set the year value as required but you cannot show only year to date field as it will be invalid date and you cannot choose date format to show only year. You can show year in normal text input as shown below.
$(document).ready(function(){
var dateVal = $('#mydate').val();
var now;
if(dateVal) {
now = new Date(dateVal);
} else {
now = new Date();
}
now.setFullYear(2015);
var day = ("0" + now.getDate()).slice(-2);
var month = ("0" + (now.getMonth() + 1)).slice(-2);
var myDate = now.getFullYear()+"-"+(month)+"-"+(day) ; // for full date
$('#mydate').val(myDate);
$('#myyear').val(now.getFullYear());
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<label for="mydate">My input</label>
<input id="mydate" type="date">
<input id="myyear" type="text">

You can do it like this. As only year is not supported in input type date i had taken another input field.
$('#mydate').change(function() {
var dateVal = $('#mydate').val();
console.log(dateVal);
getYear = dateVal.split('-');
$("#year").val(getYear[0]);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<label for="mydate">My input</label>
<input id="mydate" type="date">
<input id="year" type="text" disabled>

Want to calculate date of birth from a given age

I'm trying to calculate the date of birth from a given age.
My logic is
When we enter an age say '5'. The date of birth will be calculated as exactly 5 years from the current date. Example current date is 20/8/2018.
Then date of birth will be 20/8/2013 if the age is 5.
So below is my code:
function validatedob() {
var dob_value = document.getElementById('dob').value;
var age_value = document.getElementById('age').value;
var current_date = new Date();
var birth_date = new Date();
var birth_year = current_date.getFullYear() - age_value;
var birth_month = current_date.getMonth();
var birth_day = current_date.getDate();
birth_date.setDate(current_date.getFullYear() - age_value);
birth_date.setMonth(current_date.getMonth());
birth_date.setFullYear(current_date.getDate());
document.getElementById('dob').setDate(birth_day);
document.getElementById('dob').setMonth(birth_month);
document.getElementById('dob').setFullYear(birth_year);
}
<div class="form-inline" id="Age">
<label for="age">Age</label>
<input id="age" type="integer" name="age" onchange="validatedob()">
</div>
<div class="form-inline" id="birth">
<label for="DOB">Date of Birth</label>
<input id="dob" type="date" value="Unknown" name="date_of_birth" max="31-12-2030">
</div>
This is not working. I'm not goodwith html properties.
Can someone help me? how to achieve this?

Here is the simple answer:
> d1 = new Date(2018, 00, 01)
Date 2018-01-01T00:00:00.000Z
> d2 = new Date(d1.getFullYear() - 5, d1.getMonth(), d1.getDate())
Date 2013-01-01T00:00:00.000Z
But, I would suggest to use a library such as Luxon.
Date manipulation is an absolute nightmare if you do it by yourself. This video from Computerphile summarizes it better than I could:
https://www.youtube.com/watch?v=-5wpm-gesOY

Here is a really simple solution that works and some changes to your HTML.
Changes to HTML:
The div and label both had the id "age", this must be unique.
type="integer"doesn't exist, so i changed it to type="number".
And value="unknown"isn't the right format "yyy-MM-dd", so i just removed it.
for="DOB"to for="dob", now that works aswell
Code:
HTML
<div class="form-inline">
<label for="age">Age</label>
<input id="age" type="number" name="age"onchange="validatedob()">
</div>
<div class="form-inline" id="birth">
<label for="dob">Date of Birth</label>
<input id="dob" type="date" name="date_of_birth" max="31-12-2030">
</div>
JavaScript
function validatedob() {
var age_value = document.getElementById("age").value;
var current_date = new Date();
var birth_date = new Date(current_date.getFullYear() - age_value, current_date.getMonth(), current_date.getDate() + 1);
document.getElementById("dob").valueAsDate = birth_date;
}

Here is some sample code for your reference
https://codepen.io/ji_in_coding/pen/wEvoMK
<div class="form-inline" id="Age">
<label for="age">Age</label>
<input id="age" type="integer" name="age" onchange="validatedob()">
</div>
<div class="form-inline" id="birth" >
<label for="DOB">Date of Birth</label>
<input id="dob" type="input" name="date_of_birth">
</div>
Javascript
function validatedob()
{
var age_value = document.getElementById("age").value;
var today = new Date();
var calculated_birthday = new Date(
parseInt(today.getFullYear())+parseInt(age_value),
today.getMonth(),
today.getDate());
document.getElementById("dob").value = calculated_birthday.toLocaleDateString("en-US");
}

You're issue is that you are trying to setDate and cie on a HTMLElement. The input dob expect a string formatted as yyyy-MM-dd. You can try something like that:
var $dob = document.getElementById('dob');
var $age = document.getElementById('age');
function validatedob() {
var age = $age.value;
var date = new Date();
date.setFullYear(date.getFullYear() - age);
$dob.value = formatDate(date);
}
function formatDate(date) {
var d = new Date(date),
month = '' + (d.getMonth() + 1),
day = '' + d.getDate(),
year = d.getFullYear();
if (month.length < 2) month = '0' + month;
if (day.length < 2) day = '0' + day;
return [year, month, day].join('-');
}
<div class="form-inline" id="Age">
<label for="age">Age</label>
<input id="age" type="integer" name="age" onchange="validatedob()">
</div>
<div class="form-inline" id="birth">
<label for="DOB">Date of Birth</label>
<input id="dob" type="date" value="Unknown" name="date_of_birth" max="31-12-2030">
</div>
PS: For performance purpose avoid to repeat document.getElementById(...) in each method call. Do it once as done in my example.

Change attribute min of input type=date in javascript

I have two input fields of type date.
<input id="startdate" type="date" min='#DateTime.Now.AddDays(1).ToShortDateString()' onchange="handler(event)" />
<input id="enddate" type="date" min="#DateTime.Now.AddDays(2).ToShortDateString()" onchange="handler(event)" />
I want in enddate min date be alaways two days ahead towards selected date in start date. So far I use script adding days and selecting attribute min.
<script type="text/javascript">
function handler(e) {
var someDate = new Date($("#startdate").val());
document.getElementById("enddate").setAttribute('min', addDays($("#startdate").val(),2));
}
</script>
<script type="text/javascript">
function addDays(date, days) {
var result = new Date(date);
result.setDate(result.getDate() + days);
return result;
}
</script>
This proposition is not working. Any ideas?

using moment.js
<input id="startdate" type="date" min='' />
<input id="enddate" type="date" min="" />
<!-- import moment.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
<script>
(function(){
$('#startdate').attr('min', moment().format('YYYY-MM-DD'))
$('#startdate').on('change', function(e){
var startDate = $(this).val();
var endDate = moment(startDate).add(2, 'days').format('YYYY-MM-DD');
$('#enddate').attr('min', endDate);
})
})()
</script>

Start date End date validation in angularjs submit form should be disabled

I dont wana submit my form if Start date-End date validation fails...In my form if i have this...
<form name="scheduleForm" id="scheduleForm" class="form-vertical" novalidate>
<input type="text" placeholder="Start Date" ng-model="schedule.startDate" class="form-control" ui-date novalidate required>
<input type="text" name="endDate" placeholder="End Date" ng-model="schedule.endDate" class="form-control" ui-date novalidate ng-change='checkErr(schedule.startDate,schedule.endDate)' required>
<button class="btn btn-primary" ng-click="addSchedule(schedule)" ng-disabled="errMessage || scheduleForm.$invalid">Add Schedule</button>
And in the controller :
$scope.checkErr = function(startDate,endDate) {
$scope.errMessage = '';
var curDate = new Date();
if(new Date(startDate) > new Date(endDate)){
$scope.errMessage = 'End Date should be greater than start date';
// var err=function() {
// $window.alert('End Date should be greater than start date');};
// err();
return false;
}
if(new Date(startDate) < curDate){
$scope.errMessage = 'Start date should not be before today.';
// var err=function() {
// $window.alert('Start date should not be before today.');};
// err();
return false;
}
};
and in add function:
$scope.addSchedule=function(schedule){
$scope.schedules.push({
startDate: schedule.startDate,
endDate: schedule.endDate,
});
schedule.startDate='';
schedule.endDate='';
};
prob is button looks disable bt its allowing data to be added... do help thank in advance

to compare time properly should use getTime() function
if(new Date(startDate).getTime() > new Date(endDate).getTime())
and check date validation in button so no need to use checkErr() on end date change
<button class="btn btn-primary" ng-click="addSchedule(schedule)" ng-disabled="checkErr(schedule.startDate,schedule.endDate)|| scheduleForm.$invalid">Add Schedule</button>
and your checkErr function like:
$scope.checkErr = function(startDate,endDate) {
var curDate = new Date();
// can set error message if need to show
if(new Date(startDate).getTime() > new Date(endDate).getTime()){
return true; // if invalid
}
if(new Date(startDate).getTime() < curDate.getTime()){
return true; // if invalid
} else {
return false // if valid
}
};

Why not you add validation when elements are ready. Look at the demo here https://plnkr.co/edit/JunWzLjhLCPMqZnxsSYw?p=preview
var app = angular.module('myApp', ['ui.date']);
app.controller('MainCtrl', function($scope) {
$scope.schedule = {};
$scope.dateOptions = {
changeYear: true,
date:$scope.schedule.startDate,
changeMonth: true,
yearRange: '1900:-0',
maxDate: new Date(new Date().setDate(new Date().getDate() + 2)),
minDate:new Date()
};
$scope.addSchedule=function(schedule){
console.log($scope.schedule)
};
});
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.4/jquery-ui.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.3/jquery.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<script data-require="angular.js#1.4.x" src="https://code.angularjs.org/1.4.9/angular.js" data-semver="1.4.9"></script>
<script src="date.js"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<form name="scheduleForm" id="scheduleForm" class="form-vertical" novalidate>
<input type="text" placeholder="Start Date" ng-model="schedule.startDate" ui-date-format="DD, d MM, yy"
class="form-control" min-date="minDate" max-date="maxDate" ui-date="dateOptions" novalidate required>
<!--<input type="text" name="endDate" placeholder="End Date" ui-date-format="DD, d MM, yy" ng-model="schedule.endDate" class="form-control" ui-date novalidate ng-change='checkErr(schedule.startDate,schedule.endDate)' required>
-->
<button class="btn btn-primary" ng-click="addSchedule(schedule)" ng-disabled="scheduleForm.$invalid">Add Schedule</button>
</form>
</body>
</html>