I have made a little plugin where I get the size using naturalHeight and naturalWidth
Sometimes when loading page I get 0 in width and height (other times it works fine).
I guess it is because it calculate the size before loading the image.
How can I correct this?
I have tried to run plugin $("selector").myplugin() inside $(document).ready, but that doesn't change anything
I have also tried to wrap setTimeout around the variables where I am using naturalHeight and naturalWidth, but that doesn't prevent rest of the code to run - and I won't make it slower loading than necessary (wrap everything in setTimeout if not necessary)
So my question - are there a way to
if size is 0 - wait a little and try again
Not continue running rest until it is not 0 anymore
Or does anyone have another solution?
Ready wait only for dom to be loaded , You can use the load() on your image in order in this case , you'll not wait till all the window elm are loaded
See below snippet after loading image , The size of this last is being printed on the bottom ,
$(function(){
$( "#img" ).load(function() {
console.log($(this).width()+"-"+$(this).height())
});
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<img id="img" src="https://cdn.pixabay.com/photo/2017/09/07/14/15/wide-2725426_960_720.jpg" >
I am setting up a site for a photographer. It should be built using the Bootstrap 3 framework, and he wants to have a masonry with over 400 images on one page. For this to work LazyLoad is a must. I have now spent several days trying to get LazyLoad to work with Desandros Masonry but with no success..
I've tried all of the examples that one finds googling, but most posts/sites/forums just redirects you, or have copied this stackoverflow answer:
Combining LazyLoad and Jquery Masonry
I've tried both methods but unfortunately I get nothing but grey hair..... :(
Here is a simplified live version of the page im working on:
http://nr.x10.mx
In this example I have added a fade-in on page-load, but left the LazyLoad out since I can get it to work.
And here you have a FIDDLE of the following
var container = document.querySelector('#ms-container');
imagesLoaded( container, function()
{
var msnry = new Masonry(container,
{ itemSelector: '.ms-item',
columnWidth: '.ms-item',});
});
You can also download the whole pack here, including the jquery.lazyload.js HERE
Any help would be highly appreciated
UPDATE
Here you can have 4 different examples of the different problems that occur.
I also found to my joy that the Bootstrap .img-responsive class is interfering with LazyLoad.
1 - Masonry without LazyLoad
2 - Masonry and Lazyload - Masonry breaks down and LazyLoad has no effect
3 - LazyLoad without Masonry - LazyLoad has no effect
4 - LazyLoad without Masonry and Bootsrap "img-responsive" removed
5 - Masonry & LazyLoad using first method of SO answer mentioned above
6 - Masonry & LazyLoad using second method of SO answer mentioned above Both of the last ones gives the following error: [Error] TypeError: 'undefined' is not a function (evaluating '$container.imagesLoaded')
global code (5.html, line 110)
Updated zip HERE
Again, any asisstance would be highly appreciated, thank you
I made your 5.html work by using the javascript files of the fiddle present on the SO link you posted, answered by Nathan Do. So you probably just had bad versions of the scripts.
The scripts linked on that page are: http://cdn.jsdelivr.net/masonry/2.1.08/jquery.masonry.min.js and http://cdn.jsdelivr.net/jquery.lazyload/1.8.4/jquery.lazyload.js
Here's your original fiddle updated with that page's method: http://jsfiddle.net/L9RLe/
In your case, though you are creating masonry and adding lazyload effect, the images get overlapped.
You need to follow steps as :
Create Dynamic HTML structure for images along with their respective aspect ratio height and width. Note: images should have the required attributes for applying lazy load effect i.e. class="lazy" data-original="actual image url" and src="dummy imageurl".
Apply lazy load effect.
Then create Masonry.
Lets have an example :
Suppose I am having a javascript array with some image related data as,
var gallery_itemList= [
{url: "images/example1.jpg", width:"1170", height:"460"},
{url: "images/example2.jpg", width:"800", height:"320"},
{url: "images/example3.jpg", width:"1200", height:"870"}];
And below prototype for creating dynamic html, applying lazyload effect and creating Masonry effect as :
var masonryGallery = {
gallery :'', // gallery to create
genarateGallery : function() {
// generate each item html
var inHTML="", i;
for(i=0;i<gallery_itemList.length;i++){
var iWidth, iHeight, fHeight=0;
iWidth=parseInt(gallery_itemList[i].width);
iHeight=parseInt(gallery_itemList[i].height);
fHeight = Math.round((iHeight*300)/iWidth);
inHTML+='<div class="item" style="height:'+fHeight+'px">';
inHTML+='<img class="lazy" src="images/loading.gif" data-original="'+gallery_itemList[i].url+'"/>';
inHTML+='</div>';
}
//add generated html to gallery
$(masonryGallery.gallery).append(inHTML);
},
applyLazyload : function(){
$("img.lazy").lazyload();
},
createMasonry : function(){
// create Masonry
$(masonryGallery.gallery).masonry({
columnWidth: 350,
itemSelector: '.item',
isFitWidth: true,
isAnimated: !Modernizr.csstransitions
}).imagesLoaded(function() {
$(this).masonry('reload');
});
},
init : function(givenGallery) {
masonryGallery.gallery = givenGallery; // set gallery
masonryGallery.genarateGallery(); // generate gallery html
masonryGallery.applyLazyload(); // apply lazyload effect
masonryGallery.createMasonry(); // apply masonry effect
}
};
/* Gallery Intialisation */
(function(){masonryGallery.init('div#content');})();
If you have the problem images get overlapped, I found the solution at the site below, although it is in Japanese.
http://www.webdesignleaves.com/wp/jquery/1340/
The point is use following;
$('img.lazy').load(function(){ ... })
HTML
<div id="works_list">
<div class="work_item">
<img class="lazy" src="images/dummy.gif" data-original="images/works/thumb/001.jpg" alt="">
<p>title 1</p>
</div><!-- end of .work_item-->
<div class="work_item">
<img class="lazy" src="images/dummy.gif" data-original="images/works/thumb/002.jpg" alt="">
<p>title 2</p>
</div><!-- end of .work_item-->
....
</div><!-- end of #works_list -->
jQuery
$("img.lazy").lazyload({
effect: 'fadeIn',
effectspeed: 1000,
threshold: 200
});
$('img.lazy').load(function() {
masonry_update();
});
function masonry_update() {
var $works_list = $('#works_list');
$works_list.imagesLoaded(function(){
$works_list.masonry({
itemSelector: '.work_item',
isFitWidth: true,
columnWidth: 160
});
});
}
Just want to contribute my solution to this thorny problem.
Basically you need to call masonry's layout() function every time an image is lazyloaded, because that's when you know what it's dimensions are going to be. So you setup lazyload's load() function to call masonry.layout(). This can cause a new problem, because on your initial page load, all of your images will have a zero or near-zero height (depending on your css), and thus stack up in the top of the viewport. When you initialize lazyload, it will see all these images in the viewport, and try to load them all at once. This causes you to download tons of images, and even worse, calls masonry dozens or hundreds of times. Not very speedy.
My solution is to force a minimum height on unloaded images until they are lazyloaded. This restricts the number of images that will be found in the viewport initially, limiting the number of lazyload and masonry calls to a reasonable amount.
Once an image is loaded, you remove the .unloaded class in order to deconstrict the height and allow it to conform to the height of the image.
HTML
<div id="masonry-container">
<div class="masonry-item unloaded"><img class="lazy" data-original="image.jpg"></div>
<!-- Repeat as needed -->
</div>
CSS
.masonry-item {
width: 33.3%; // I'm doing a 3-column masonry layout
}
.unloaded {
min-height: 200px;
// set a minimum default height for image containers
// this prevents too many images from appearing in the viewport
// thus causing lazy load to load too many images at once
// we will use the lazyload .load() callback to remove this fixed
}
JS
$( document ).ready(function() {
// Initialize Masonry
var container = document.querySelector('#masonry-container');
var msnry = new Masonry( container, { transitionDuration: 0 } );
msnry.layout(); // run masonry for first time
function doMasonry() { msnry.layout(); } // gives us a function handler to call later with window.setTimeout()
// Initialize lazyload
$("img.lazy").lazyload({
effect : "fadeIn", // optional
load : function() {
$(this).parent().removeClass("unloaded"); // select the div containing the image and remove the "unloaded" class, thus deconstricting the min-height
window.setTimeout(doMasonry,100); // trigger masonry again with a 100 ms delay, if we do it too soon, the image may not have loaded, and masonry will layout with the wrong image dimensions (this might be a bit of a hacky way to do it)
}
});
});
I have built a parallax scrolling intro for a clients website - the site contains many high res images - so I have created a quick loader which blanks out the screen with a full screen high z-index div and then uses the setTimeout method to fade in the page 4 seconds after document ready (not sure if this is the best way to do this but it works in every test I've tried).
I would like to disable the scroll to prevent users scrolling through the animation before it appears -can anyone recommend a good cross-browser method to do this?
If you want to fade in when all images are loaded, you can try this
var images = $('img');
var images_nbr = images.length;
images.load(function() {
images_nbr--;
if (images_nbr == 0) {
$('body').css('overflow','auto');
$('...').fadeIn();
}
});
Set
#mydiv {
overflow:hidden
}
in your parent div in CSS. Then, in your document, add this...
$('#mydiv').css('overflow', 'auto');
...in the function that fades in your content.
Thus, on load the page will be unscrollable, but when you fade in, the overflow property will be overwritten and allow the content to scroll.
.scrolldiv{
overflow:hidden;
}
$(window).load(function(){
$(".scrolldiv").css("overflow","auto");
});
You can try like,
initially add the below css on body
body {overflow:hidden;}
and after your setInterval function complete execution (whatever your loading function) just remove the style from body, like
$('body').css('overflow','auto');
Built my own image slider, works perfectly inside firefox. Yet in chrome / safari the images tend to not load the first time the page is opened. (if you refresh everything is fine)
var count = $("#show-image img").size();
var img = $("#show-image img");
$(document).ready(function () {
for(i=0;i<count;i++){
var width = img[i].width;
var height = img[i].height;
$(img[i]).css({"width": width, "height": height});
console.log(img[i].width);
}
});
In chrome and safari, the first time the page loads some of the images are getting the height and width set to 0px. I'm assuming cause the images aren't fully loaded yet.
How is it possible to run the code, when page is ACTUALLY fully loaded?
As a quick and simple solution, use .load() instead.
A better solution would be to use this jQuery plugin:
$(document).ready(function() {
$('#show-image').imagesLoaded(function() {
/* your code here */
});
});
The advantage being that you only have to wait for those specific images to be loaded, instead of everything as you would for .load().
I have a problem with my fade with caption in jquery.. my problem is the following The rolling messages on the header run down into the body of the page on IE8.
Please i left here the url.
http://www.aerocom.net.au/index.php?id=contact-us
Thanks in advance
That's probably because of this line (from aerocom.js), that sets the width of the caption:
$('#gallery .caption').css({width: $('#gallery a').find('img').css('width')});
You're trying to get the width on the image on document ready, but that's before the image is loaded, and therefor the width is 0.
You can either get the width on window load, when the image has loaded:
$(window).load(function() {
$('#gallery .caption').css({width: $('#gallery a').find('img').css('width')});
});
Or continue using document ready, and set a width on the img tag:
<img width="980" src="http://www.aerocom.net.au/theme/Default_Simple/image/banner/banner4.jpg">
I would recommend the former. I would also set an height. By doing this the browser can skip a few reflows when initially rendering the page, which means faster loading.