want to do nice image loading, but my images are loaded by ajax (prepend). How to do load() on each image. I want it to load one by one, order doesn't matter. Before image load I want some loading gif.
Here is what I tried:
.done(function( data ) {
var obj = JSON.parse(data);
for(i = 0; i < obj.length; i++)
if(obj[i].indexOf("blank.gif") > -1)
continue;
else
$("#images_for_this_gallery").prepend("<div id='fd_" + i + "' class='featured_image_div'>" +
"<span class='imageloading'>loading</span>" + //LOADING MEESAGE FOR EACH IMAGE
"<img class='images' src='" + image_path + obj[i] + "' />" + // IMAGE FOR NICE LOAD
"<a href='#' id='" + obj[i] + "' class='image_delete'>X</a>" +
"</div>").hide();
});
And here is my attempt:
$(".images").each(function() {
if (this.complete) {
// this image already loaded
// do whatever you would do when it was loaded
} else {
$(this).load(function() {
$(".imageloading").hide();
$(this).show();
});
}
});
Here is another attempt:
$(function() {
$(".images").load(function(){
$(".imageloading").hide();
$(".images").show();
});
});
It works on normal image but not on ajax generated image...
Thank you!
Related
I'm using jQuery Justified gallery with the inbuilt infinite scroll plugin.
http://miromannino.github.io
This may be stupid question but how can i load the images dynamically with PHP.
I know how to do it with the below infinity scroll plugin but this plugin doesn't work with the infinity scroll plugin.
http://www.infinite-scroll.com/
Code
$('#gallery').justifiedGallery({rowHeight:120});
$(window).scroll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()) {
for (var i = 0; i < 5; i++) {
$('#gallery').append('<a>' +
'<img src="http://path/to/image" />' +
'</a>');
}
$('#gallery').justifiedGallery('norewind');
}
});
$('#gallery').justifiedGallery({rowHeight:120});
$(window).scroll(function(){
if($(window).scrollTop() + $(window).height() == $(document).height()){
//jquery ajax for dynemic loading images
$.ajax({
type:'post',//method can bet get,post
url:'yourPHPFile.php',//url of your php file
data:{"key":value},//if you want to send some data for query
success:function(result){ //function call when successful response from server
var PhpImageArray=JSON.parse(result);
$.each(PhpImageArray, function(index, item) {
$('#gallery').append('<a>' +
'<img src="http://path/to/image"'+item.image+' />' +
'</a>');
});
}
});
$('#gallery').justifiedGallery('norewind');
}
});
phpfile.php
<?php
//array contain image object as
$img_array=array();
//your database query
$query=mysqli_query($DB_connect,"select imageName from ImageTable");
while($img=mysqli_fetch_array($query))
{
//object name with "image"
$obj["image"]=$img["imageName"];
//push object to arraay
array_push($img_array,$obj);
}
//convert array in to json format for javascript use
echo json_encode($img_array);
?>
You could count the amount of images by using Javascript
var offset = $('#gallery').children().length
Then you could make an ajax call to a given route (e.g /giveImages) which returns an JSON-Array containing the image URL's
$.get('/giveImages?offset=' + offset, function(data) {
// data = [
// 'http://foo.com/image/3.jpg',
// 'http://foo.com/image/4.jpg',
// 'http://foo.com/image/5.jpg'
// ]
// APPEND STUFF HERE AND justifyGallery
})
Full example:
$(window).scroll(function() {
if($(window).scrollTop() + $(window).height() == $(document).height()) {
var offset = $('#gallery').children().length
$.get('/giveImages?offset=' + offset, function(data) {
for(var i = 0; i < data.length; i++) {
$('#gallery').append(
'<a>' +
'<img src="' + data[i] + '" />' +
'</a>'
)
$('#gallery').justifiedGallery('norewind')
}
})
}
}
I'm currently using the jQuery get method to read a table in another page which has a list with files to download and links to others similar webpages.
$.get(filename_page2, function(response, status){
var data = $("<div>" + response + "</div>");
var target_element = data.find(target_element_type_page2 + '#' + target_element_id_page2)[0];
var container = document.getElementById(element_change_content_page1);
if (typeof target_element !== "undefined"){
var rows = target_element.rows;
for (var i = 1, n = rows.length; i < n; i++) {
var table = rows[i].cells[1].getElementsByTagName("TABLE")[0];
var isFolder = table.getAttribute("CType") == "Folder";
var elem = table.rows[0].cells[0];
var text = elem.innerText || elem.textContent;
var link = elem.getElementsByTagName("A")[0].getAttribute("href");
if (!isFolder) {
container.innerHTML += "<li class=\"mainfolderfile\">" + "<a class=\"filelink\" href=\"" + link + "\">" + text + "</a></li>";
} else {
container.innerHTML += "<li class=\"folderlist\">" + "<a class=\"folderlink\" onclick=\"open_submenu(this)\" href=\"#\">" + text + "</a><ul></ul></li>";
var elem_page1 = container.getElementsByTagName("li");
var container_page1 = elem_page1[elem_page1.length - 1].getElementsByTagName("ul")[0];
create_subfolder(container_page1, link);
}
}
} else {
container.innerHTML += "<li class=\"mainfolderfile\">" + "<a class=\"filelink\" href=\"" + "#" + "\">" + "Error..." + "</a></li>";
}
}, page2_datatype);
This is working fine, and all the folders and files are being listed. But when I try to do the same thing with the folders (calling the create_subfolder function) and create sublists with their subfolders and files, I'm getting a weird behavior.
function create_subfolder(container2, link1) {
$.get(link1, function(response, status){
var data = $("<div>" + response + "</div>");
var target_element = data.find("table" + "#" + "onetidDoclibViewTbl0")[0];
if (typeof target_element !== "undefined"){
var rows = target_element.rows;
for (var i = 1, n = rows.length; i < n; i++) {
var table = rows[i].cells[1].getElementsByTagName("TABLE")[0];
var elem = table.rows[0].cells[0];
var text = elem.innerText || elem.textContent;
var link2 = elem.getElementsByTagName("A")[0].getAttribute("href");
//nothing is changed in the webpage. The modifications in the html don't appear
container2.innerHTML += "<li>" + text + "</li>";
}
}
alert(container2.innerHTML); // Print the html with all the modifications
}, "html");
}
The second get(), inside the create_subfolder() function are not changing anything in the webpage, so no sublist is created. But, when I call the alert() function at the end of the get() function, it prints the code with all the modifications it should have made in the html at the second get callback. I believe the problem is related with the asynchronous behavior of the get function but I don't know exactly why. Any guess?
In my Firefox OS app i use Flickr API to show relevant images, My URL for the call is like this.
https://api.flickr.com/services/rest/?method=flickr.photos.search&api_key=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&lat=42.86366&lon=-75.91438&radius=3&format=json&nojsoncallback=1
and i use created a function to call the flicker api for the images. This is the function where i create the URL with the api key and latitude and longitude for the api call
function displayObject(id) {
console.log('In diaplayObject()');
var objectStore = db.transaction(dbTable).objectStore(dbTable);
objectStore.openCursor().onsuccess = function(event) {
var cursor = event.target.result;
if (cursor) {
if (cursor.value.ID == id) {
var lat = cursor.value.Lat;
var lon = cursor.value.Lon;
showPosOnMap (lat, lon);
// create the URL
var url = 'https://api.flickr.com/services/rest/?method=flickr.photos.search';
url += '&api_key=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
url += '&lat=' + lat + '';
url += '&lon=' + lon + '';
url += '&radius=3';
url += '&format=json&nojsoncallback=1';
$.getJSON(url, jsonFlickrFeed);
return;
}
cursor.continue();
} else {
$('#detailsTitle').html('No DATA');
}
};
}
This function gets the JSON object received from flickr. This function displays the thumbnails of the images in a jquery mobile grid.
function jsonFlickrFeed (data) {
console.log(data);
var output = '';
// http://farm{farmId}.staticflickr.com/{server-id}/{id}_{secret}{size}.jpg
for (var i = 0; i < data.photos.photo.length; i++) {
// generate thumbnail link
var linkThumb = '';
linkThumb += 'http://farm' + data.photos.photo[i].farm + '.staticflickr.com/' + data.photos.photo[i].server + '/' + data.photos.photo[i].id + '_' + data.photos.photo[i].secret + '_s.jpg';
// generate Full image link
var linkFull = '';
linkFull += 'http://farm' + data.photos.photo[i].farm + '.staticflickr.com/' + data.photos.photo[i].server + '/' + data.photos.photo[i].id + '_' + data.photos.photo[i].secret + '_b.jpg';
if (i < 20)
console.log(linkThumb);
//console.log(linkFull);
var title = data.photos.photo[i].title;
var blocktype = ((i % 3) == 2) ? 'c' : ((i % 3) == 1) ? 'b' : 'a';
output += '<div class="ui-block-' + blocktype + '">';
output += '<a href="#showphoto" data-transition="fade" onclick="showPhoto(\'' + linkFull + '\',\'' + title + '\')">';
output += '<img src="' + linkThumb + '_q.jpg" alt="' + title + '" />';
output += '</a>';
output += '</div>';
};
$('#photolist').html(output);
}
Then finally this function show the full screen view of the image. When the user taps on the thumbnail a larger image is taken and shown.
function showPhoto (link, title) {
var output = '<a href="#photos" data-transition="fade">';
output += '<img src="' + link + '_b.jpg" alt="' + title + '" />';
output += '</a>';
$('#myphoto').html(output);
}
My problem is that, i get the JSON object with the images by calling the API. i have console.log() where i output the json object and i checked all the image info is there. But when i go to the grid view and even the full view i get the default image that states that the This image or video is currently unavailable. I can't figure out what im doing wrong here.. Please help.
You may be requesting an image size that flickr does not have for that image. You are appending "_s", "_q" and "_b" to select a few sizes - so perhaps those are not available. You can check the flickr API 'photos.getSizes' to see what sizes are available. The Flickr API seems to be pretty inconvenient sometimes.
https://www.flickr.com/services/api/flickr.photos.getSizes.html
I'm using the Flickr API and I want to create a onlick popup div for each image which shows the image in a larger form like this http://fancybox.net/.
How can I implement this so that the onclick function will be applied to each div in the div container?
The project: http://jsfiddle.net/phippsy20/rtzp8/
jQuery: so this statement makes the divs
for (var i = 0; i < 210; i++) {
$('<div />').attr('id', 'photo-' + i).addClass('photo').appendTo('#photo-container');
}
This function loads the picture from flickr as the background image:
$.each(data.photos.photo, function(i, photo) {
var imgURL = 'http://farm' + photo.farm + '.staticflickr.com/' + photo.server + '/' + photo.id + '_' + photo.secret + '_n.jpg';
console.log(imgURL);
// Pre-cache image
$('<img />').attr({'src': imgURL, 'data-image-num': i}).load(function() {
console.log('image loaded');
var imageDataNum = $(this).attr('data-image-num');
$('#photo-' + imageDataNum).css('background-image', 'url(' + imgURL + ')').removeClass('fade-out').addClass('fade-in');
})
Ok, if i understand your question, this may help you:
$("#heading-name div").each(function(i){
$(this).attr("onclick","popup("+i+")");
});
Demo working: http://jsfiddle.net/k2h8p/1/ (test the code locally in your computer)
I'm having a problem with elements added with appendTo() not being immediately available in the DOM.
First, I'm reading some data from a JSON file and then appending some html to a div. Then I'm calling a random shuffler plugin to show one of the added divs at a time.
jsonUrl = "js/performers.json";
$.getJSON(jsonUrl, function(json) {
$.each(json.performers, function(i, performer) {
var html = '<div class="performer_mini">';
html += '<img src="' + performer.thumbnail + '" alt="' + performer.name + '" /><br />';
html += performer.name + '<br /></div>';
$(html).appendTo("div#performer_spotlight");
});
});
$("#performer_spotlight").randomShuffler(".performer_mini", 3000, 3000, 9000);
The random shuffler does the following:
(function($) {
$.fn.randomShuffler = function(shuffledElements, fadeInTime, fadeOutTime, timeout) {
fadeInTime = fadeInTime || 3000;
fadeOutTime = fadeOutTime || 3000;
timeout = timeout || 9000;
$(shuffledElements).hide();
var $old_element;
var $new_element;
var old_index = 0;
var new_index = 0;
function shuffleElement() {
$old_element = $new_element;
old_index = new_index;
while ($(shuffledElements).length > 0 && old_index == new_index) { // don't display the same element twice in a row
new_index = Math.floor(Math.random()*$(shuffledElements).length);
}
$new_element = $(shuffledElements + ":eq(" + new_index + ")");
if ($old_element != undefined) {
$old_element.fadeOut(fadeOutTime, function() {
$new_element.fadeIn(fadeInTime);
});
} else {
$new_element.fadeIn(fadeInTime);
}
setTimeout(shuffleElement, timeout);
}
$(this).show();
shuffleElement();
}
})(jQuery);
The first time the shuffleElement() function is called $(shuffledElements).length equals 0, so no element is displayed. On the next call to shuffleElement(), the elements added with appendTo() are available and one is selected at random as expected. Everything works correctly after that.
Is there some way to refresh the DOM or make these elements available to jQuery immediately after I add them with appendTo()? Any other suggestions for how to accomplish this?
When exactly do you call randomShuffler? You call this function after the AJAX-request succeeds? I have always believed that the element added by appendTo available immediately after the addition.
This code works very well for me:
<script language="javascript">
var test = "<div class=\"test\">1</div>";
$(test).appendTo("div#performer_spotlight");
$("div.test").html("<b>Hello</b>");
</script>
Yes, like #MeF Convi says you need to call the plugin only after the getJSON finishes:
$.getJSON(jsonUrl, function(json) {
$.each(json.performers, function(i, performer) {
var html = '<div class="performer_mini">';
html += '<img src="' + performer.thumbnail + '" alt="' + performer.name + '" /><br />';
html += performer.name + '<br /></div>';
$(html).appendTo("div#performer_spotlight");
});
$("#performer_spotlight").randomShuffler(".performer_mini", 3000, 3000, 9000);
});