I came across an issue with the background image of a div not showing in Chrome.
A website I'm working on has two image containers sitting on top of another: The one with the lower z-index shows the currently selected image while the one with the higher z-index is used to preview other images when the user hovers over an item in the navigation.
Basically, what is supposed to happen is that every time the mouse cursor is moved from one navigation item to the next, the old preview image is saved as the background of the preview image container and then the actual image in the previewing container is hidden (without it being noticed, since the image is still in the background), swapped for the new image and then faded in. The fade is supposed to happen directly from the old image, which is why I'm setting the old image as a background before.
Now, this works perfectly everywhere but in Google Chrome, where the background image just won't show. The weird thing is, I've used a debugging break to take a closer look and noticed the background image is actually correctly set (meaning it is correctly listed in the CSS of the element at the time), but it is not shown in the browser.
var previewDelay;
$("#cnt-navigation_secondary").find(".txt-navigation_secondary").mouseenter(function(){
var newImage = $(this).find("img").attr("src");
var oldImage = $("#img-content-preview").attr("src");
previewDelay = setTimeout(function(){
$("#cnt-content-preview").show(); //The previewing container is shown (in case it was hidden before).
$("#cnt-content-preview").css({"background-image":"url("+oldImage+")"}); //The old image is set as the background of the previewing container
$("#img-content-preview").hide(); //The image inside the previewing container is hidden. All browsers but Chrome now show still show the same image, as it is in the background, but Chrome doesn't, even though it's visible in the CSS.
$("#img-content-preview").attr("src", newImage); //The source of the hidden image is set to the new image.
$("#img-content-preview").fadeIn(400); //The new image is faded in.
},100);
}).mouseleave(function(){
clearTimeout(previewDelay);
});
You can see the entire thing in action here: http://www.haasarchitektur.at/index.php?main=1&siteid=403
Try hovering over items in the architecture subnav. In Firefox, for example, the previewing images will fluidly change from one project to another while in Chrome you'll always briefly see the element in the back blink through as the background of the previewing container is not properly set.
I'm kind of at a loss of where this behaviour is coming from, so any help would be greatly appreciated. ; )
Thank you & best regards,
Michael
The background image doesn't seem to load because it is quite a large file? I tried your example setting the background colour to red instead of changing images and it works fine and blocks the original image from being shown. You may need to work out a way to have the background-image already placed in a div so it is already loaded in the browser..
As you have loaded the images already in your navigation menu, you could tinker with the css so that jquery overlays THIS image until the real image is ready?
Related
so I'm using WP metaslider for a slideshow/gallery display. Everything works great with it, except instead of clicking on the image in the slider and opening its original size in a new window, I would prefer to click on the image in the slider and it enlarging within the slide, similar to the accordion gallery styles, but I want the image clicked on to get larger and the other images to remain the same size or get smaller.
I've tried CSS and javascript shown here but it did not work.
I am open to other plugins that may give me a closer result than this, but the accordion plugin here is the next closet but I still want to be able to see all of the images without them being cut off.
http://kerimthedj.com/new/photos
I'm wondering if it's possible to apply a loader image to only a specific part of content on a webpage?
All the tutorials I've seen for loader images are for entire webpages - what I would like to accomplish is to apply a simple loader only to a div.
I'm building a website that has 2 profile images for staff members layered on top of one another, so when you hover over the image, it fades to the image at the back. I used this method because we want the smooth transition when hovering.
The only problem is that when you open the page with a slower internet speed, you see the bottom / back image until the top one loads, which is not what we want. You should only see the bottom image when you hover over the profile image.
Any ideas how I can create a loader image for only this part of the content?
Here's one of the pages on the development server: http://hanrickcurran.azurewebsites.net/tony-hunt/
Thank you for the info DeeMac. I didn't even think of doing it the way you mention with hiding the bottom image until it is hovered.
I've changed the code, so now the content in the bottom / back is set to 'visibility:hidden;' and only 'visibility:visible;' when the area is hovered.
I'm making a map that when you put mouse over a name in a list the <img>of the map change the src attribute to the map image with that zone highlighted, I only use the .attr() method of jquery to change it like this.
$("img.map").attr("src","newmap.png");
It works great in all browser but firefox, when the image change, first the old one disappear then there's a short time when there is nothing displayed and then the new image appears, how could I do this change smoothly in firefox like chrome or IE do??
(The time is really short but when moving the mouse through the directory the image disappear for the whole time the mouse is moving).
Or may be you know a better way to accomplish that effect. Thanks
Try preloading your images. The blink occurs as the new image is being loaded by the browser.
This happens because the src attribute has obviously changed. Well, the new image has not been downloaded yet. So it has to send a request to the server and wait for the response all while the src attribute has already changed. This is why you see nothing there for a bit. There are ways around this. In JavaScript, create a new image element with the new image as it's source. Add an onload event handler that will change the src attribute of the image you really want to show. Yes, this may be a bit more difficult the preloading, but it will decrease the initial page load time and it won't clutter your HTML.
Off the top of my head a combination of hover intent and a background image would help this.
The hover intent is good because you don't want to be downloading images unnecessarily.
If you give the containing div (or even the image itself) a background image of the original or last viewed image the flicker effect would be lessened. I suspect the load times for these image changes could vary so you could use this as an opportunity to show some sort of loading icon as well.
Having said all that I think it makes more sense to have the original image and then add a new image each time you hover an area. That way you can only add the image element when it doesn't already exist (saving http requests) and even do more graceful changes (fading over the original for instance)
Hope that helps!
The problem is that the browser is downloading the image when you first reference it, and not before.
I'd simply have two image elements and hide/show them instead of changing the src attribute of a single element.
I'm working on a website that hosts music, pictures, and videos. I currently have 4 pages, a title page, a music page, a video page and an image page. This works well, but I would like to be able to incorporate the ability to play music and look at pictures at the same time. To do this, I created one HTML document with each former page inside a div with a descriptive class name. Then, I wrote a javascript function that shows and hides each div when it is called, so the page acts like it's 4 pages but it isn't. So i embedded the music player in a footer div that stays open as music plays, meaning you can switch back and forth between each media type while keeping the music footer open and playing. This is where the problem lies. When this is done, the image magnifier jquery function I used on my image page no longer works correctly, UNLESS the image div is shown at the beginning when the page opens. It's only then that you can switch between media types and still magnify the pictures. If the title div is shown first (like it's supposed to be), and you go to try and magnify an image, it doesn't work.
At first I thought maybe some of the external javascript libraries were negatively interacting with each other, but then I happened upon what I explained above and now I'm just at a loss as to why the images need to be the first things displayed for the magnifier to work correctly.
The jquery code I'm using is called jQuery Image Magnify and it's made by Dynamic Drive.
Edit: The way that I'm hiding and show div's is with style="display:none" to hide and style="display:block" to show.
Interesting question. Probably because the element needs to be actually visible for the jQuery Image Magnify function to run. I'm willing to bet that plugin uses imageElement.onload for the image magnification handler or something like that, which I think doesn't work if the image element is hidden.
As far as a solution goes, try setting your image to visible at when the page first loads, maybe with left set to -9999 px or something silly like that so it's technically still "visible" but the user can't see it. Then, after the image has loaded and (hopefully) been magnified or whatever the plugin does, move it to be a child of the div its page is supposed to be on and get rid of the negative left value.
I've created a slideshow on a website (sorry, new user and can only post one link) using this method: http://iamacamera.org/sandbox/linkedphotoshuffler/ I only changed the specified variables, and it works great, except that about 10 or so pixels of the right edge of the image currently in the background are showing. I've checked, and the images are exactly the same size, so there appears to be a shift left of the foreground image or shift right of the image in the background. How do I ensure they are perfectly aligned or hide the background image so it is not visible to users?
Disable any CSS not necessary to make this work and see if maybe one of the CSS rules for your site is accidentally targeting the div holding the image and applying a margin or padding.