I have a container with a light blue background on my page and I would like for the background to get sequentially darker with each click. At this point, I'm happily setting my array of colors manually (we'll leave that question for another day) but I'm unable to get the background color to change or iterate over the array like I would like.
Currently, I'm getting alerts that there was an error in parsing my background color. I've tried setting background-color for .content in the css document and removing it, but neither way works (except if I remove it, then there's no background color at all)
Here's a rough sense of the code I have so far. I built it based on this jsfiddle from another thread, though it does not match entirely: http://jsfiddle.net/arunpjohny/3eGM5/
$(document).ready(function() {
var blues = ['#c4c4fd', '#5d5dbc'],
counter = 0;
$(".content").click(function() {
$(".content").animate({
backgroundColor: blues[counter++]});
#the text in this div also changes on click, so here's my animation for that.
#This is working fine, but I figured I'd include it just to be safe
var current = $('.active');
var next = current.next('.section');
if(next.length === 0) {
next = $('.section').first();
};
current.fadeOut(400).removeClass('active');
next.delay(100).fadeIn(1500).addClass('active');
});
});
Is there an obvious solution to this that I'm missing? I'm still pretty new to jQuery and putting everything together, so any advice or any direction you can point me in would be greatly appreciated!
Your color isn't being animated because you need to use the jQuery Color plugin to animate colors.
So you'd need to include the jquery color plugin in your markup and then change your animate code to look similar to this.
$("#block").animate({
backgroundColor: $.Color(blues[counter++])
}, 1500 );
Related
I have some buttons with their CSS style.
When an animation starts I would like to change their style for the duration of the animation.
Stuff like changing the color, changing the pointer, changing the hover; to make them look "disabled" basically.
I have a global var which is "true" while the animations runs, and turns "false" when the animation is not running.
In order to achieve this goal, I have tried many things, but none of them worked, I tried:
changing the name of the class based on the var value, and create two different CSS styles -> didn't work because it didn't get updated with the change of the var
changing the style within REACT inside the function when the animation is called and changing it back when it's over. Using: document.getElementById("firstOne").style =
The second option it's the only one that actually worked well. The problem I can't edit back the hover to where it was before.
The question:
Is there a way to change the hover from React? Something like:
document.getElementById("firstOne").style = ;
If not, is there a way to just tell it "from now just follow the style written on the CSS file"?. To kind of setting the style back to before.
If not, any other ideas on how to achieve my goal?
Thank you
I have multiple background images that are behind a block of text each. I would like to fade each background image and have the text move up when one background image fades into another.
For example
BG1 (background image 1) has Tegxt1 on top of it. As BG1 fades into BG2, Text1 moves up and is replaced by Text2.
How can I do this with simple jquery and javascript and CSS?
Here's what I tried
this._currentTimeout = setTimeout(function() {
this.slides$.eq(newSlideIndex).css('z-index', 3).fadeTo(ANIMATION_FADE_DURATION, 1, function() {
this.slides$.eq(this.currentSlideIndex).css('z-index', 1).css('opacity', 0);
this.slides$.eq(newSlideIndex).css('z-index', 2);
this.currentSlideIndex = newSlideIndex;
this._setTransitionTimerForNewSlide(this._getNextSlideIndex(), 5000);
}.bind(this));
}.bind(this), durationUntilTransition);
You did not provide enough code to generate a complete working example (How is your html structured? Where is your jQuery located on the page? What does your existing CSS look like?), so unfortunately no one on StackOverflow and give you a perfect answer. The best we can do is create a small demo of what you could do to accomplish this affect. It's then up to you to learn from the example and apply the concept to your own code.
If I was going to try to accomplish this, here's the approach I would take:
Stack images on top of each other with position: absolute;
The first image group should have the highest z-index, so it's on top. CSS can do this!
The second image group should have the second-highest z-index, so that it shows behind the first image during the fade. CSS again!
all other image_groups should have z-index below the second image. Yay for CSS!
Animate the image and text seperately
The image just needs to fade out
The text needs to fade up and out
After the first (top) image group is completely faded, move it to the bottom of the list
Remove the inline style="..." that jQuery's .animate() applies to the image group. Once we do this, the image group will adhere to the css rules we set up in step one.
JS Fiddle Demo
The first step will be done manually by you when you're writing HTML and CSS, but then your jQuery can handle steps 2-4. Then just repeat as much as you'd like. Ask questions if you need to, but try hard to apply this to your own code. Good luck!!
I am using animate.css for a feed. I have a div named feed that uses uses the slideInLeft class, remains for 3 seconds, then uses the fadeOut class. At this point, I need to change the content of the div and start again. Here's what I've got:
HTML:
<div id="feed"></div>
JS:
var myCars=new Array("Saab","Volvo","BMW");
var wIndex = 0;
$('#feed').text(myCars[wIndex]);
setInterval(function () {
++wIndex;
if (wIndex >= myCars.length) {
wIndex = 0;
}
$('#feed').removeClass('animated slideInLeft');
$('#feed').addClass('animated fadeOut').addClass('hidden');
$('#feed').text(myCars[wIndex]);
$('#feed').removeClass('animated fadeOut').removeClass('hidden');
$('#feed').addClass('animated slideInLeft');
}, 3000);
http://jsfiddle.net/tjfo/5a3SL/
The initial change from the first element in the array to the second works properly, fade out, slide in. All the following transitions just change the text in the div with no fade out, slide in. Animate.css is the preferred method for completing this task. Can anyone help figure out how to make it work properly?
Thanks!
I think you're looking to remove the animated and slideInLeft classes prior to applying subsequent classes. Maybe remove those classes right off, then in a timeout of say, 25ms, do the rest of the logic.
Here's a demo: http://jsfiddle.net/5a3SL/3.
When animating with CSS this is a fairly common thing since you need to give the browser time to calculate the new layout without those classes before applying new classes, otherwise the correct state won't exist in the layout for the new class to properly animate.
Also, that honestly seems like too much CSS for a simple animation... the trickiest thing about animations is having to re-write your CSS declarations for 4 different vendor prefixes as well as the standard declaration.
Another way to handle this would be to set a timeout at the end of the loop that is at least as long as the animation (the slide-in) and remove the unnecessary classes then.
Im looking for a way to change the background image of a div using jQuery BUT only amending it, not totally changing it.
Let me explain.
Im using http://jqueryui.com/demos/sortable/#portlets to show some div's that open and close. Now when you click the portlet header it opens and closes the content below.
Inside the portlet header i have a child div which shows an arrow (either up or down) depending on the current state of the content. I need a way of changing the background image on this child div by adding on "-visible" onto the end of the url for the background image.
I wouldnt even know where to start with doing this, but i have added some code below for you to look at.
http://jsfiddle.net/45jZU/
From the fiddle there, i need to alter the background image of the portlet-arrow div inside portlet header. I can not simply change the background image all together, but i have simplified it down to post on here.
I hope this isnt too narrow to not be of use to anyone else on stackoverflow.
Thanks
Maybe I'm missing something here, but can't you use the .css attribute modifier for the selected jQuery object? Something like:
var current_background = $("#my-div").css("background-image");
$("#my-div").css("background-image", current_background + "-visible");
If you're looking to modify the class names themselves, you can try mess around with the .toggleClass(), .hasClass(), .addClass() and .removeClass() methods in jQuery.
I hope this helps, but let me know if I've missed the mark here completely!
I would personnaly go for using css classes to change the background image. If you decide to change the image afterwards, you won't have to alter your javascript. It is a better solution to use javascript to code the behavior of the widget, not the visual aspect.
So you have the following css:
.portlet-header {
background-image: url(<an image>);
}
.portlet-header.collapsed {
background-image: url(<an other one>);
}
Add this line to your javascript to toggle the collapsed class:
$(".portlet-header").click(function() {
...
$(this).parent().toggleClass('collapsed');
});
If you widgets starts collapsed, initially add the class.
DEMO
So I have this page here:
http://www.eminentmedia.com/development/powercity/
As you can see when you mouse over the images the div slides up and down to show more information. Unfortunately I have 2 problems that i can't figure out and I've searched but haven't found quite the right answer through google and was hoping someone could point me in the direction of a tutorial.
The first problem is that when you mouse over an image it changes to color (loads a new image), but there's a short delay when the image is loading for the first time so the user sees white. Do I have to preload the images or something in order to fix that?
My second problem is that when you move your mouse over the 'additional content area' it goes crazy and starts going up and down a bunch of times. I just don't have any idea what would cause this but i hope one of you will!
All my code is directly in the source of that page if you would like to view the source.
Thanks in advance for your help!
Yes, you have to preload the images. Thankfully, this is simple:
var images_to_preload = ['myimage.jpg', 'myimage2.jpg', ...];
$.each(images_to_preload, function(i) {
$('<img/>').attr({src: images_to_preload[i]});
});
The other thing you have to understand is that when you use jQuery you have to truly embrace it or you will end up doing things the wrong way. For example, as soon as you find yourself repeating the same piece of code in different places, you are probably doing something wrong. Right now you have this all over the place:
<div id="service" onmouseover="javascript:mouseEnter(this.id);" onmouseout="javascript:mouseLeave(this.id);">
Get that out of your head. Now. Forever. Always. Inline javascript events are not proper, especially when you have a library like jQuery at your disposal. The proper way to do what you want is this:
$(function() {
$('div.box').hover(function() {
$(this).addClass('active');
$(this).find('div.slideup').slideDown('slow');
}, function() {
$(this).removeClass('active');
$(this).find('div.slideup').slideUp('slow');
});
});
(You have to give all the #industrial, #sustainable, etc elements a class of 'box' for the above to work)
These changes will also fix your sliding problem.
I can see your images (the ones that are changing) are set in the background of a div. Here is a jquery script that preloads every image found in a css file. I have had the same problem in the past and this script solves it. It is also very easy to use:
http://www.filamentgroup.com/lab/update_automatically_preload_images_from_css_with_jquery/
I will take a look at your other problem...
1) You should be using the jquery events to drive your mouseovers. Give each div a class to indicate that its a category container and use the hover function to produce the mouseover/mouseout action you're after.
html
<div id="industrial" class="category"></div>
Javascript
$(".category").hover(
function () {
$(this).find('.container').show();
},
function () {
$(this).find('.container').hide();
}
);
I simplified the code to just do show and hide, you'll need to use your additional code to slide up and slide down.
2) Yes, you need to preload your images. Another option would be "sprite" the images. This would involve combining both the black and white and colour versions of each image into a single image. You then set it as the div's background image and simply use CSS to adjust the background-position offset. Essentially, sliding instantly from the black and white to colour images as you rollover. This technique guarentees that both images are fully loaded.