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Why my focus is not working properly?

I have data.json file is being loaded after I focus but after I focus then my datepicker is not showing why I didn't understand. but if I focus second time I can see.. where is my mistake ?
function flattenFieldsArray(arr) {
return arr.map(function(item) {
return item.field
})
}
$(function() {
var focused = false;
$(document.body).one("focus", '#checkin,#checkout', function() {
if (!focused) {
$.getJSON('data.json', function(data) {
// use ajax data mapped to same structure as original variables
var firstDate = flattenFieldsArray(data.firstDate);
var lastDate = flattenFieldsArray(data.lastDate);
var availabledays = flattenFieldsArray(data.availabledays);
var booked = flattenFieldsArray(data.booked);;
var ssdays = [];
// nothing was changed below
var dateFormat = "mm/dd/yy",
from = $("#checkin").datepicker({
changeMonth: true,
numberOfMonths: 2,
firstDay: 1,
minDate: new Date(firstDate),
maxDate: new Date(lastDate),
onSelect: function(selectedDate) {
var yenitarih = new Date();
var date = $(this).datepicker('getDate');
date.setTime(date.getTime() + (1000 * 60 * 60 * 24))
$("#checkout").datepicker("option", "minDate", date);
},
beforeShowDay: function(date) {
var y = date.getFullYear().toString(); // get full year
var m = (date.getMonth() + 1).toString(); // get month.
var d = date.getDate().toString(); // get Day
if (m.length == 1) {
m = '0' + m;
} // append zero(0) if single digit
if (d.length == 1) {
d = '0' + d;
} // append zero(0) if single digit
var currDate = y + '-' + m + '-' + d;
if (jQuery.inArray(currDate, availabledays) >= 0) {
return [false, "ui-highlight"];
}
if (jQuery.inArray(currDate, booked) >= 0) {
return [true, "ui-bos"];
} else {
return [true];
}
},
isTo1: true,
}).on("change", function() {
to.datepicker("option", "minDate", getDate(this));
}),
to = $("#checkout").datepicker({
changeMonth: true,
changeYear: true,
firstDay: 1,
numberOfMonths: 2,
minDate: new Date(firstDate),
maxDate: new Date(lastDate),
onSelect: function(selectedDate) {
$("#checkin").datepicker("option", "maxDate", selectedDate);
},
beforeShowDay: function(date) {
var y = date.getFullYear().toString(); // get full year
var m = (date.getMonth() + 1).toString(); // get month.
var d = date.getDate().toString(); // get Day
if (m.length == 1) {
m = '0' + m;
} // append zero(0) if single digit
if (d.length == 1) {
d = '0' + d;
} // append zero(0) if single digit
var currDate = y + '-' + m + '-' + d;
if (jQuery.inArray(currDate, booked) >= 0) {
return [true, "ui-highlight-donus"];
}
if (jQuery.inArray(currDate, availabledays) >= 0) {
return [true, "ui-bos"];
}
if (jQuery.inArray(currDate, ssdays) >= 0) {
return [true, "ui-ss-donus"];
} else {
return [true];
}
}
}).on("change", function() {
from.datepicker("option", "maxDate", getDate(this));
});
})
focused = true;
}
});
});
.form{
width:960px;
margin:120px auto;
}
.form input{
width:250px;
padding:10px;
}
.ui-highlight .ui-state-default{background: red !important;border-color: red !important;color: white !important; cursor:no-drop;}
.ui-bos .ui-state-default{background: green !important;border-color: green !important;color: white !important;}
.ui-ss .ui-state-default{background: yellow !important;border-color: yellow !important;color: gray !important; cursor:help;}
.ui-ss-donus .ui-state-default{background: yellow !important;border-color: yellow !important;color: gray !important; cursor:help;}
.ui-highlight-donus .ui-state-default{background: red !important;border-color: red !important;color: white !important; }
.ui-testtarih .ui-state-default{
background:black !important;
color:#FFF !important;
}
<link data-require="jqueryui" data-semver="1.10.0" rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.10.0/css/smoothness/jquery-ui-1.10.0.custom.min.css" />
<div class="form">
<input type="text" id="checkin" />
<input type="text" id="checkout" />
<input type="submit" value="Search" />
</div>
<script data-require="jquery" data-semver="3.1.1" src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script data-require="jqueryui" data-semver="1.10.0" src="//cdnjs.cloudflare.com/ajax/libs/jqueryui/1.10.0/jquery-ui.js"></script>
footnote: I couldn't add my json data to stackoverflow snippet that's why I add plunker demo in plunker demo works
Click to see plunker demo

$.getJSON has a done() function in which you can write you logic after data is loaded. You can trigger the datepicker manually inside the done function
Here's a working fork

It is because, on the first focus, the datepickers are applied on the elements and NOT triggered. Mind the difference between binding an event and triggering it.
On the first time focus, datepicker will be applied and NOT triggered as it is not already bound to the element. But on any subsequent focus, it would trigger the datepicker and open it since it is already bound to the element.
As a solution,you can try adding $("#checkin").datepicker('show'); and $("#checkout").datepicker('show'); after the end for $("#checkin").datepicker({}) and $("#checkout").datepicker({}), respectively.

You should load your data prior to the first focus event on your datepickers.
Here's an example :
plunkr
$( document ).ready(function() {
var data;
$.getJSON('data.json', function (d) {
data = d;
console.log('data', d);
setupDatepickers();
});
function setupDatepickers() {
// use ajax data mapped to same structure as original variables
var firstDate = flattenFieldsArray(data.firstDate);
var lastDate = flattenFieldsArray(data.lastDate);
var availabledays = flattenFieldsArray(data.availabledays);
var booked = flattenFieldsArray(data.booked);;
var ssdays = [];
// nothing was changed below
var dateFormat = "mm/dd/yy",
from = $("#checkin")
.datepicker({
beforeShowDay : function (date) {
var y = date
.getFullYear()
.toString(); // get full year
var m = (date.getMonth() + 1).toString(); // get month.
var d = date
.getDate()
.toString(); // get Day
if (m.length == 1) {
m = '0' + m;
} // append zero(0) if single digit
if (d.length == 1) {
d = '0' + d;
} // append zero(0) if single digit
var currDate = y + '-' + m + '-' + d;
if (jQuery.inArray(currDate, availabledays) >= 0) {
return [false, "ui-highlight"];
}
if (jQuery.inArray(currDate, booked) >= 0) {
return [true, "ui-bos"];
} else {
return [true];
}
},
changeMonth : true,
firstDay : 1,
isTo1 : true,
maxDate : new Date(lastDate),
minDate : new Date(firstDate),
numberOfMonths: 2,
onSelect : function (selectedDate) {
var yenitarih = new Date();
var date = $(this).datepicker('getDate');
date.setTime(date.getTime() + (1000 * 60 * 60 * 24))
$("#checkout").datepicker("option", "minDate", date);
}
})
.on("change", function () {
to.datepicker("option", "minDate", getDate(this));
}),
to = $("#checkout")
.datepicker({
beforeShowDay : function (date) {
var y = date
.getFullYear()
.toString(); // get full year
var m = (date.getMonth() + 1).toString(); // get month.
var d = date
.getDate()
.toString(); // get Day
if (m.length == 1) {
m = '0' + m;
} // append zero(0) if single digit
if (d.length == 1) {
d = '0' + d;
} // append zero(0) if single digit
var currDate = y + '-' + m + '-' + d;
if (jQuery.inArray(currDate, booked) >= 0) {
return [true, "ui-highlight-donus"];
}
if (jQuery.inArray(currDate, availabledays) >= 0) {
return [true, "ui-bos"];
}
if (jQuery.inArray(currDate, ssdays) >= 0) {
return [true, "ui-ss-donus"];
} else {
return [true];
}
},
changeMonth : true,
changeYear : true,
firstDay : 1,
maxDate : new Date(lastDate),
minDate : new Date(firstDate),
numberOfMonths: 2,
onSelect : function (selectedDate) {
$("#checkin").datepicker("option", "maxDate", selectedDate);
}
})
.on("change", function () {
from.datepicker("option", "maxDate", getDate(this));
});
}
});

How to set specific days with json for datepicker?

I have more than one specific days in my datepicker and I set these days with array but I want to set with json instead of array (I know both of them are object). You will see below example I have specific days if you click.
so my question is how can I set my dates with json data to use specific days ?
$(function() {
var ilktarih = ['2017-03-23'];
var sontarih = ['2017-04-10']
var bostarihler = ['2017-03-15', '2017-03-16', '2017-03-17', '2017-03-18', '2017-03-19', '2017-03-20', '2017-03-21', '2017-03-22', '2017-03-23', '2017-03-24', '2017-03-25', '2017-03-26', '2017-03-27', '2017-03-28', '2017-03-29', '2017-03-30'];
var dolutarihler = ['2017-02-22', '2017-02-23', '2017-02-24', '2017-02-25', '2017-02-26', '2017-02-27', '2017-02-28', '2017-03-01', '2017-03-02', '2017-03-03', '2017-03-04', '2017-03-05', '2017-03-06', '2017-03-07', '2017-03-08', '2017-03-09', '2017-03-10', '2017-03-11', '2017-03-12', '2017-03-13', '2017-03-14'];
var sstarihler = [];
var dateFormat = "mm/dd/yy",
from = $("#checkin").datepicker({
changeMonth: true,
numberOfMonths: 2,
firstDay: 1,
minDate: new Date(ilktarih),
maxDate: new Date(sontarih),
onSelect: function(selectedDate) {
var yenitarih = new Date();
var date = $(this).datepicker('getDate');
date.setTime(date.getTime() + (1000 * 60 * 60 * 24))
$("#checkout").datepicker("option", "minDate", date);
$("#checkout").trigger("focus");
},
beforeShowDay: function(date) {
var y = date.getFullYear().toString(); // get full year
var m = (date.getMonth() + 1).toString(); // get month.
var d = date.getDate().toString(); // get Day
if (m.length == 1) {
m = '0' + m;
} // append zero(0) if single digit
if (d.length == 1) {
d = '0' + d;
} // append zero(0) if single digit
var currDate = y + '-' + m + '-' + d;
if (jQuery.inArray(currDate, dolutarihler) >= 0) {
return [false, "ui-highlight"];
}
if (jQuery.inArray(currDate, bostarihler) >= 0) {
return [true, "ui-bos"];
}
if (jQuery.inArray(currDate, sstarihler) >= 0) {
return [false, "ui-ss"];
} else {
return [true];
}
},
isTo1: true,
}).on("change", function() {
to.datepicker("option", "minDate", getDate(this));
}),
to = $("#checkout").datepicker({
changeMonth: true,
changeYear: true,
firstDay: 1,
numberOfMonths: 2,
minDate: new Date(ilktarih),
maxDate: new Date(sontarih),
onSelect: function(selectedDate) {
$("#checkin").datepicker("option", "maxDate", selectedDate);
},
beforeShowDay: function(date) {
var y = date.getFullYear().toString(); // get full year
var m = (date.getMonth() + 1).toString(); // get month.
var d = date.getDate().toString(); // get Day
if (m.length == 1) {
m = '0' + m;
} // append zero(0) if single digit
if (d.length == 1) {
d = '0' + d;
} // append zero(0) if single digit
var currDate = y + '-' + m + '-' + d;
if (jQuery.inArray(currDate, dolutarihler) >= 0) {
return [true, "ui-highlight-donus"];
}
if (jQuery.inArray(currDate, bostarihler) >= 0) {
return [true, "ui-bos"];
}
if (jQuery.inArray(currDate, sstarihler) >= 0) {
return [true, "ui-ss-donus"];
} else {
return [true];
}
}
}).on("change", function() {
from.datepicker("option", "maxDate", getDate(this));
});
function getDate(element) {
var date;
try {
date = $.datepicker.parseDate(dateFormat, element.value);
} catch (error) {
date = null;
}
return date;
}
});
.form {
width: 960px;
margin: 120px auto;
}
.form input {
width: 250px;
padding: 10px;
}
.ui-highlight .ui-state-default {
background: red !important;
border-color: red !important;
color: white !important;
cursor: no-drop;
}
.ui-bos .ui-state-default {
background: green !important;
border-color: green !important;
color: white !important;
}
.ui-ss .ui-state-default {
background: yellow !important;
border-color: yellow !important;
color: gray !important;
cursor: help;
}
.ui-ss-donus .ui-state-default {
background: yellow !important;
border-color: yellow !important;
color: gray !important;
cursor: help;
}
.ui-highlight-donus .ui-state-default {
background: red !important;
border-color: red !important;
color: white !important;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.css" rel="stylesheet" />
<div class="form">
<input type="text" id="checkin" />
<input type="text" id="checkout" />
<input type="submit" value="Ara" />
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
my json dates
{
"ilktarih": ["2017-03-23"],
"sontarih": ["2017-04-10"],
"bostarihler": ["2017-03-15","2017-03-16","2017-03-17","2017-03-18","2017-03-19","2017-03-20","2017-03-21","2017-03-22","2017-03-23","2017-03-24","2017-03-25","2017-03-26","2017-03-27","2017-03-28","2017-03-29","2017-03-30"],
"dolutarihler": ["2017-08-22","2017-06-23","2017-06-24","2017-05-25","2017-06-26","2017-10-27","2017-02-28","2017-03-01","2017-03-02","2017-03-03","2017-03-04","2017-03-05","2017-03-06","2017-03-07","2017-03-08","2017-03-09","2017-03-10","2017-03-11","2017-03-12","2017-03-13","2017-03-14"]
}
CodePen Demo

jquery ui date range 15 day between two date

How can be a possible with jquery ui I need 15 days between two input..how can I choose just 15 day between two date ? my mind went black and I can't do that that why I'm ashamed
if you want to details please click here
$(function() {
var ilktarih = ['2017-03-23'];
var sontarih = ['2017-04-10']
var bostarihler = ['2017-03-15', '2017-03-16', '2017-03-17', '2017-03-18', '2017-03-19', '2017-03-20', '2017-03-21', '2017-03-22', '2017-03-23', '2017-03-24', '2017-03-25', '2017-03-26', '2017-03-27', '2017-03-28', '2017-03-29', '2017-03-30'];
var dolutarihler = ['2017-02-22', '2017-02-23', '2017-02-24', '2017-02-25', '2017-02-26', '2017-02-27', '2017-02-28', '2017-03-01', '2017-03-02', '2017-03-03', '2017-03-04', '2017-03-05', '2017-03-06', '2017-03-07', '2017-03-08', '2017-03-09', '2017-03-10', '2017-03-11', '2017-03-12', '2017-03-13', '2017-03-14'];
var sstarihler = [];
var dateFormat = "mm/dd/yy",
from = $("#checkin").datepicker({
changeMonth: true,
numberOfMonths: 2,
firstDay: 1,
minDate: new Date(ilktarih),
maxDate: new Date(sontarih),
onSelect: function(selectedDate) {
var yenitarih = new Date();
var date = $(this).datepicker('getDate');
date.setTime(date.getTime() + (1000 * 60 * 60 * 24))
$("#checkout").datepicker("option", "minDate", date);
},
beforeShowDay: function(date) {
var y = date.getFullYear().toString(); // get full year
var m = (date.getMonth() + 1).toString(); // get month.
var d = date.getDate().toString(); // get Day
if (m.length == 1) {
m = '0' + m;
} // append zero(0) if single digit
if (d.length == 1) {
d = '0' + d;
} // append zero(0) if single digit
var currDate = y + '-' + m + '-' + d;
if (jQuery.inArray(currDate, dolutarihler) >= 0) {
return [false, "ui-highlight"];
}
if (jQuery.inArray(currDate, bostarihler) >= 0) {
return [true, "ui-bos"];
}
if (jQuery.inArray(currDate, sstarihler) >= 0) {
return [false, "ui-ss"];
} else {
return [true];
}
},
isTo1: true,
}).on("change", function() {
to.datepicker("option", "minDate", getDate(this));
}),
to = $("#checkout").datepicker({
changeMonth: true,
changeYear: true,
firstDay: 1,
numberOfMonths: 2,
minDate: new Date(ilktarih),
maxDate: new Date(sontarih),
onSelect: function(selectedDate) {
$("#checkin").datepicker("option", "maxDate", selectedDate);
},
beforeShowDay: function(date) {
var y = date.getFullYear().toString(); // get full year
var m = (date.getMonth() + 1).toString(); // get month.
var d = date.getDate().toString(); // get Day
if (m.length == 1) {
m = '0' + m;
} // append zero(0) if single digit
if (d.length == 1) {
d = '0' + d;
} // append zero(0) if single digit
var currDate = y + '-' + m + '-' + d;
if (jQuery.inArray(currDate, dolutarihler) >= 0) {
return [true, "ui-highlight-donus"];
}
if (jQuery.inArray(currDate, bostarihler) >= 0) {
return [true, "ui-bos"];
}
if (jQuery.inArray(currDate, sstarihler) >= 0) {
return [true, "ui-ss-donus"];
} else {
return [true];
}
}
}).on("change", function() {
from.datepicker("option", "maxDate", getDate(this));
});
function getDate(element) {
var date;
try {
date = $.datepicker.parseDate(dateFormat, element.value);
} catch (error) {
date = null;
}
return date;
}
});
.form {
width: 960px;
margin: 120px auto;
}
.form input {
width: 250px;
padding: 10px;
}
.ui-highlight .ui-state-default {
background: red !important;
border-color: red !important;
color: white !important;
cursor: no-drop;
}
.ui-bos .ui-state-default {
background: green !important;
border-color: green !important;
color: white !important;
}
.ui-ss .ui-state-default {
background: yellow !important;
border-color: yellow !important;
color: gray !important;
cursor: help;
}
.ui-ss-donus .ui-state-default {
background: yellow !important;
border-color: yellow !important;
color: gray !important;
cursor: help;
}
.ui-highlight-donus .ui-state-default {
background: red !important;
border-color: red !important;
color: white !important;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.css" rel="stylesheet" />
<div class="form">
<input type="text" id="checkin" />
<input type="text" id="checkout" />
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>

Maybe you want something like this?.
$(function () {
$("#txtFrom").datepicker({
onSelect: function(selectedDate) {
//$("#cal4").datepicker("setDate", selectedDate);
var date = $(this).datepicker("getDate");
date.setDate(date.getDate() + 15);
$("#txtTo").datepicker("setDate", date);
$("#txtTo").datepicker("option", "minDate", selectedDate);
$("#txtTo").datepicker("option", "maxDate", date);
}
});
$("#txtTo").datepicker({
changeMonth: true,
changeYear: true
})
});
<link href="https://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<input type="text" id="txtFrom" />
<input type="text" id="txtTo" />

You should use moment.js for any complicated enough date related javascript task

jQuery datepicker: highlight and style multiple dates

I'm using the jQuery date picker as an online calendar too. I have a setup which takes the date values in the data-value attribute of the .whats-on-block divs, and assigns the .special class to the relevant date value in the jQuery date picker, thus I can style it accordingly via CSS.
This works great, I also have a .highlights div with multiple date values as the data-highlight attribute, I'm wondering if I can assign the .highlighter class to the relevant date values in the date picker so I can style these separately? I'm not really sure how to achieve this as the beforeShowDay function is already being used to assign the .special. Here's the markup...HTML
<div class="whats-on-grid">
<div class="datepicker-block" class="whats-on-block">
<div id="datepicker"></div>
</div>
<div class="whats-on-block" data-value="1982014"></div>
<div class="whats-on-block" data-value="2282014"></div>
<div class="whats-on-block" data-value="1482014"></div>
<div class="whats-on-block" data-value="2982014"></div>
//etc
</div>
<div class="highlights" data-highlight="2882014 2782014 1582014 2082014 1992014"></div>
CSS
.special { background-color: red !important; }
.highlighter { background-color: blue !important; }
jQuery
var $container = $('.whats-on-grid');
var $blocks = $("div.whats-on-block", ".whats-on-grid");
$(function () {
var blocks = $('.whats-on-grid .whats-on-block')
$('#datepicker').datepicker({
inline: true,
//nextText: '→',
//prevText: '←',
showOtherMonths: true,
//dateFormat: 'dd MM yy',
dayNamesMin: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
//showOn: "button",
//buttonImage: "img/calendar-blue.png",
//buttonImageOnly: true,
onSelect: function (dateText, inst) {
var date = new Date(dateText);
var dateValue = date.getDate().toString() + (date.getMonth() + 1).toString() + date.getFullYear().toString();
$container.isotope({
filter: '[data-value~="' + dateValue + '"], #datepicker-block'
});
},
beforeShowDay: function (date) {
var target = date.getDate().toString() + (date.getMonth() + 1).toString() + date.getFullYear().toString();
var contains = blocks.filter('[data-value~="' + target + '"]').length > 0;
return [true, contains ? 'special' : '', '']
}
});
});
Any suggestions on how this can be achieved would be greatly appreciated!

If all you are trying to do is to add the highlighter class to the highlights dates prior to rendering, you should be able to easily achieved that in your beforeShowDay function like this:
beforeShowDay: function (date) {
var target = date.getDate().toString() + (date.getMonth() + 1).toString() + date.getFullYear().toString();
var isSpecial = blocks.filter('[data-value~="' + target + '"]').length > 0;
var isHighlight = $("div[class~='highlights']").filter('[data-highlight~="' + target + '"]').length > 0;
if (isSpecial)
return [true, 'special', ''];
else if (isHighlight)
return [true, 'highlighter', ''];
return [true, '', ''];
}
The tricky part is what if a special date is also a highlight date. You may need different CSS styling to distinguish them.
Live demo available on fiddle.

Disabling dates and specific weekdays in jquery datepicker

I'm trying to disable specific dates (i.e christmas etc) PLUS disabling certain weekdays per default in the jQuery UI datepicker, but I can't get it to work. I have the following:
<script type="text/javascript">
iDays = 2;
blockDays = [1,4,6];
$(document).ready(function () {
$.datepicker.setDefaults($.datepicker.regional['sv']);
$('.inpDate').datepicker({
dateFormat: 'yy-mm-dd',
minDate: iDays,
maxDate: 14,
showOtherMonths: true,
showStatus: true,
beforeShowDay: noHolidays
});
var disabledDays = ["12-24-2013", "12-25-2013", "12-26-2013", "12-31-2013", "1-1-2014"]
function noHolidays(date) {
return [!disableSpecificWeekDays(date) && !nationalDays(date)];
}
function nationalDays(date) {
var m = date.getMonth(), d = date.getDate(), y = date.getFullYear();
for (i = 0; i < disabledDays.length; i++) {
if ($.inArray((m + 1) + '-' + d + '-' + y, disabledDays) != -1 || new Date() > date) {
return true;
}
}
return false;
}
function disableSpecificWeekDays(date) {
var daysToDisable = blockDays;
var day = date.getDay();
for (i = 0; i < daysToDisable.length; i++) {
if ($.inArray(day, daysToDisable) != -1) {
return [false];
}
}
return [true];
}
});
</script>
If I run ONLY the disableSpecificWeekDays in the "beforeShowDay" parameter it works fine, same goes with the nationalDays. But for some reason it FEELS like it's simply ignoring the date parameter if I call it through the noHoliday function.
In short, I need help!

Just noticed your question after having answered a similar/duplicate question. Instead of copying the code from there just have a look here: Hide weekdays and specific dates of jquery datepicker