Develop Reference

Appending data fetched by an AJAX call to an already existing list in UI & saving the data fetched to the already saved list in localstorage

I have a page in which I have to show list of data in UI through ajax & append the list data in html table save that list data into Local Storage with Jquery, My question is that I want to implement lazy load in UI such that user clicks a button (Click to view more list), and after clicking the button the ajax calls another list with limit & offset to show more list & append the new list below the existing list in UI and also save the data into local storage along with the existing data present.
My Ajax Call for List Data
var sendingData = {
limit: "50000",
offset: "0"
};
$.ajax({
type: 'POST',
url: "/Common/Item/getselleritems?SellerId=" + userid,
data: sendingData ,
crossDomain: true,
success: function (data)
{
localStorage.setItem("productCode", JSON.stringify(data));
},
error()
{
//Do something
}
});
``
My Html design Function
function showProducts()
{
var productsStorage = localStorage.getItem("productCode");
var products = JSON.parse(productsStorage);
var trHTML = '';
$("table tbody").html("");
$.each(products.Data, function (key, value)
{
trHTML += '<tr>'
+ '<td class="d-md-flex align-items-center">' + '<figure style="' + imgStyle + '"><a href="" title="Photo title" data-effect="mfp-zoom-in">' +
'<img src="' + imgSrc + '" alt="thumb" class="lazy"></a></figure>' +
'<div class="flex-md-column">' +
'<h4 class="package_name" id="itemdescription_' + value.Id + '" onclick = "packageDetails(\'' + value.Price + '\',\'' + value.Name + '\',\'' + value.Description
+ '\',\'' + itemTimeSlotType + '\',\'' + value.ServiceName + '\',\'' + value.PreparationTime + '\',\'' + value.Quantity + '\')" >' +
'<i class="icon_box-selected" style="' + style + '; margin-right:3px"></i>' +
value.Name + '</h4>' +
'<p>' + value.Description + '</p>' +
'<em>' + "Available In: " + itemTimeSlotType + '</em>' + '<br>' +
'<span class="stars_sellerItem" style="' + starStyle + '">' + value.FoodtestAvgRating + ' <i class="icon_star"> </i> ' +
'</span>' +
'</div>' +
'</td>' + '<td style="padding: 0.75rem 0 0.75rem 0;">' +
'<strong id="itemprice_' + value.Id + '">' +
'<i class="fa fa-inr" aria-hidden="true"></i>' + value.Price +
'</strong>' +
'</td>' +
'<td class="options">' +
'<div class="dropdown dropdown-options">' +
'<i class="icon_plus_alt2"></i>' +
'<div class="numbers-row number" id="item2_' + value.Id + '" data-id="' + value.Id + '">' +
'<input type="text" value="1" class="form-control" name="quantity" id="itemvalue_' + value.Id + '" onchange="getval(' + itemId + ');" readonly>' +
'<div class="inc button_inc plus">' + '+' + '</div><div class="dec button_inc minus">' + '-' + '</div>' + '</div>' +
'</td>' + '</tr>';
}
$("table tbody").append(trHTML);
}

Doubleclick event not working in mobile browser view

i created a double click event on a div , when i click twice a heart react appears on top of the image , on the web browser vue it works fine but when i pressed F12 and switched to mobile view it didn't work
here is my javascript function :
$(document).on("dblclick", '#tesst', function (e) {
var heart = $(this).find("i");
heart.fadeIn("slow");
setTimeout(function () {
heart.fadeOut("slow");
}, 2000);
heartReact();
});
here is my div :
stringMsg =
'<div class="/col-lg-4 delcd-tours animate-box/">' +
'<div id="tesst" class="hot-img-container" >' +
'<a href="#">' +
'<div class="instagram">' +
'<i id="heart" class="fa fa-heart">' + '</i>' +
'<img src="" id="myImgTag' + element.id_publication + '" class="img-fluid" alt="" />' +
'</div>' +
"</a>" +
'<div class="desc">' +
"<span>" +
"</span>" +
"<h3>" +
element.pays +
"</h3>" +
"<span>" +
"</span>" +
'<span class="price">' +
element.budget +
"</span>" +
'<a class="btn btn-primary btn-outline" href="tour-detail.html">' +
"View Trip" +
'<i class="icon-arrow-right22">' +
"</i>" +
"</a>" +
"</div>" +
"</div>" +
"</div>";
document.getElementById("pubslist").innerHTML += stringMsg;
document.getElementById("myImgTag" + element.id_publication).src = element.imagePub;
is there any solution for this problem to make it work on both web and mobile view

Ajax JSON data and lightbox conflicts

I have a gallery setup with the lightbox plugin lightGallery
The gallery works perfect with static HTML. The problem arises when I dynamically grab API data and try to have the lightbox working on those items.
I can't seem to get another lightbox to both work with this function and load an HTML block from the page correctly (load the one that's been dynamically generated). This app does the correct HTML grabs, if I can get the conflict resolved.
Any initial thoughts? Anyone else run into anything similar?
JS:
//----------------------------------------------------------------//
//---------------// Calling Lightgallery //---------------//
//----------------------------------------------------------------//
$('#photoBox').lightGallery({
selector: '.tile',
download: false,
counter: false,
zoom: false,
thumbnail: false,
mode: 'lg-fade'
});
// ----------------------------------------------------------------//
// ---------------// Unsplash Photos //---------------//
// ----------------------------------------------------------------//
// Filter Difference based on button click
$('button').click(function () {
$('button').removeClass("active");
$(this).addClass("active");
var unsplashAPI = "#URL";
var order = $(this).text();
var sortOptions = {
order_by: order,
format: "json"
};
function displayPhotos(data) {
var photoData = '';
$.each(data, function (i, photo) {
photoData += '<a class="tile" data-src="' + photo.urls.regular + '">' + '<img alt class="photo" src="' + photo.urls.regular + '">' + '<div class="caption-box" id="' + photo.id + '">' + '<h1 class="photo-title">' + 'Photo By: ' + photo.user.name + '</h1>' + '<p class="photo-description"> Description: Awesome photo by ' + photo.user.name + ' aka: ' + photo.user.username + ' So far this photo has ' + '<span>' + photo.likes + '</span>' + ' Likes' + '</p>' + '</div>' + '</a>';
});
$('#photoBox').html(photoData);
}
$.getJSON(unsplashAPI, sortOptions, displayPhotos);
}); // End button
HTML:
<div class="content" id="photoBox"></div>
-- Thanks

Call the plugin after the data is appended to the page
function displayPhotos(data) {
var photoData = '';
$.each(data, function (i, photo) {
photoData += '<a class="tile" data-src="' + photo.urls.regular + '">' + '<img alt class="photo" src="' + photo.urls.regular + '">' + '<div class="caption-box" id="' + photo.id + '">' + '<h1 class="photo-title">' + 'Photo By: ' + photo.user.name + '</h1>' + '<p class="photo-description"> Description: Awesome photo by ' + photo.user.name + ' aka: ' + photo.user.username + ' So far this photo has ' + '<span>' + photo.likes + '</span>' + ' Likes' + '</p>' + '</div>' + '</a>';
});
$('#photoBox').html(photoData);
$('#photoBox').lightGallery({
selector: '.tile',
download: false,
counter: false,
zoom: false,
thumbnail: false,
mode: 'lg-fade'
});
}

Unable to scroll after append

I am trying to fetch data from json file and then attach the data as listitem in a unordered list.
So its getting listed successfully, but I cannot scroll again through it.
Here is how my Javascript looks like:
function ListViewData(allpost) {
allposts = allpost;
$.each(allpost.posts, function (i, row) {
if (row.thumbnail_images) {
$(".list__container").append('<li class="list__item list__item--tappable list__item__line-height list-item-container">' +
'<div class="list-item-main">' +
'<div class="list-item-left">' +
'<img src="' + row.thumbnail_images['full'].url + '" class="thumbnail" width="80" height="80">' +
'</div>' +
'<div class="list-item-right">' +
'<div class="list-item-content">' +
'<span class="list-item-name">' + row.title + ' ' +
'<br/>' +
'<span class="lucent">' +
'<i class="fa fa-map-marker"></i> Paris, France' +
'</span>' +
'</span>' +
'<br/>' +
'<span class="list-item-text" style="margin-top:16px;">Eiffel Tower is the symbol of Paris and named by Gustave Eiffel.' +
'</span>' +
'</div>' +
'</div>' +
'</div>' +
'<span class="list-item-action" >' +
'<i class="fa fa-angle-right"></i>' +
'</span>' +
'</li>');
}
$(".list__container").listview();
});
$('.list__container').animate({
scrollTop: $('.list__container').prop("scrollHeight")
}, 500);
}
and here is how my HTML code looks like:
<div class="list list-top">
<ul class="list__container">
//here append data comes in place
</ul>
</div>

Instead of
$('.list__container').animate({
scrollTop: $('.list__container').prop("scrollHeight")
}, 500);
Try
$("html,body").animate({
scrollTop: $('.list__container').prop("scrollHeight")
}, 500);

Jquery / Javascript: There is a NaN on my HTML

I am writing an HTML loop using javascript. It will loop through a series of images and display them with additional information. It appears that there is always a NaN showing on the HTML output as shown here.
Here is the javascript in question:
var caption = '<p></p>';
if($.isEmptyObject(data[i].caption) !== true)
{
caption = '<p class="caption" style="top:'+data[i].height+'px;">'+
data[i].caption +
'</p>';
}
var li = '<li data-uk-modal="{target:#modal-open-image}"'
+ 'class="open"'
+ 'image="'+ data[i].photo +'"'
+ 'caption_height="'+ data[i].height +'"'
+ 'caption="'+ data[i].caption +'">'
+ '<a href="#" class="uk-thumbnail uk-overlay-toggle">'
+ '<div class="uk-overlay">'
+ '<img src="'+ data[i].photo +'" width="250px"/>'
+ caption +
+ '<div class="uk-overlay-caption">'
+ '<p> Sender: ' + data[i].sender + '</p>'
+ '<p> Date: ' + data[i].date + '</p>'
+ '<p> limit: '+ data[i].limit + '</p>'
+ '<p> counter: ' + data[i].counter + '</p>'
+ '</div>'
+ '</div>'
+ '</a>'
+'</li>';
$photo.append(li);
I would think the problem would lie on the caption variable. the data[i] is an array of from a database query.
I need to check if there is something on the data[i].caption. I tried using length, but that doesn't work, so I check if the object exist. Though I am not sure if that works.
My question, is how to display properly check if the caption is empty, and if none it will not add anything on the var li.
Thanks.

You can code it in one line:
( (data && data[i] && data[i].caption) ? " your stuff " : "")
But pay attention that checking 'data[i].caption' in javascript means that: zero is false, empty string is false.
Furthermore if you referring a number you can add a condition using the method isNaN

Please use this one in place of the '+ caption +'
isNaN(data[i].caption) ? '' : data[i].caption
or if(isNaN(data[i].caption)==true){
//do somthing
}else{
//do somthing
}

Thanks for the feedback. I manage to gobble up the solutions you game me and I ended up with this.
var height = (data[i].height == null)?0:data[i].height;
var caption= (data[i].caption== null)?'':data[i].caption;
var li = '<li data-uk-modal="{target:\'#modal-open-image\'}"'
+ 'class="open"'
+ 'image="'+ data[i].photo +'"'
+ 'caption_height="'+ height +'"'
+ 'caption="'+ caption +'">'
+ '<a href="#" class="uk-thumbnail uk-overlay-toggle">'
+ '<div class="uk-overlay">'
+ '<img src="'+ data[i].photo +'" width="250px"/>'
+ '<p class="caption" style="top:' + height +'px;">'
+ caption
+ '</p>'
+ '<div class="uk-thumbnail-caption">'
+ '<p> Sender: ' + data[i].sender + '</p>'
+ '<p> Reciever: '+ data[i].reciever + '</p>'
+ '<p> Date: ' + data[i].date + '</p>'
+ '<p> limit: '+ data[i].limit + '</p>'
+ '</div>'
+ '</div>'
+ '</a>'
+'</li>';