I made a simple content/box slider which uses the following javascript:
$('#left').click(function () {
$('#videos').animate({
marginLeft: '-=800px'
}, 500);
});
$('#right').click(function () {
$('#videos').animate({
marginLeft: '+=800px'
}, 500);
});
Here is the demo: http://jsfiddle.net/tjset/2/
What I want to do and I can't figure out how to show and hide arrows(left and right box) as the all the boxes slided.
So I clicked 4 time to the LEFT and slided all the boxes! then hide "left" so that you can't give more -800px
What can I do?
What you can do is check after the animation completes to see if the margin-left property is smaller or larger than the bounds of the video <div>. If it is, depending on which navigation button was clicked, hide the appropriate navigation link.
Check out the code below:
$('#left').click(function () {
// reset the #right navigation button to show
$('#right').show();
$('#videos').animate({
marginLeft: '-=800px'
}, 500, 'linear', function(){
// grab the margin-left property
var mLeft = parseInt($('#videos').css('marginLeft'));
// store the width of the #video div
// invert the number since the margin left is a negative value
var videoWidth = $('#videos').width() * -1;
// if the left margin that is set is less than the videoWidth var,
// hide the #left navigation. Otherwise, keep it shown
if(mLeft < videoWidth){
$('#left').hide();
} else {
$('#left').show();
}
});
});
// do similar things if the right button is clicked
$('#right').click(function () {
$('#left').show();
$('#videos').animate({
marginLeft: '+=800px'
}, 500, 'linear', function(){
var mRight = parseInt($('#videos').css('marginLeft'));
if(mRight > 100){
$('#right').hide();
} else {
$('#right').show();
}
});
});
Check out the jsfiddle:
http://jsfiddle.net/dnVYW/1/
There are many jQuery plugins for this. First determine how many results there are, then determine how many you want visible, then use another variable to keep track with how many are hidden to the left and how many are hidden to the right. So...
var total = TOTAL_RESULTS;
var leftScrolled = 0;
var rightScrolled = total - 3; // minus 3, since you want 3 displayed at a time.
instead of using marginLeft I would wrap all of these inside of a wrapper and set the positions to absolute. Then animate using "left" property or "right". There's a lot of code required to do this, well not MUCH, but since there are many plugins, I think you'd be better off searching jquery.com for a plugin and look for examples on how to do this. marginLeft is just not the way to go, since it can cause many viewing problems depending on what version of browser you are using.
Related
I am trying to replicate the scrolling effect from here: http://www.altisliferpg.com/
I have a feeling that they are using a heavily modified version of Bootstrap Navbar, which I have taken from here: http://www.enjin.com/forums/page/1/m/10826/viewthread/8514993-boot-strap-30-navbar-full-module and have changed it to fit into my specific case.
How would I make it so when you scroll down the page, the bar on the top gets "smaller" and scrolls along with the page as you scroll? Thanks
You can use css transitions for the height, font size and whatever else you want changed. Then simply set a scroll listener, which adds a class to the header so the size changes. Quick (and very ugly) example. jsFiddle
$(window).scroll(function () {
if ($(this).scrollTop()) {
$('#header').addClass('small');
}
else {
$('#header').removeClass('small');
}
});
Maybe you should detect the scroll event of the window, after that, set the position of the navbar to fixed and then, perform the animation. Here's an example of the javascript part and a link see it in action:
$(function(){
var performingDownAnimation = false,
performingUpAnimation = false;
var performScroll = function(){
if($("body").scrollTop() > 0) {
if(performingUpAnimation) {
$('#logo').stop();
performingUpAnimation = false;
}
if(!performingDownAnimation){
$('#navbar').addClass('navbar-fixed');
$('#logo').animate({ 'font-size': "12px" }, 1000, function(){
performingDownAnimation = false;
});
performingDownAnimation = true;
}
}else if($("body").scrollTop() == 0){
if(performingDownAnimation) {
$('#logo').stop();
performingDownAnimation = false;
}
if(!performingUpAnimation){
$('#navbar').removeClass('navbar-fixed');
$('#logo').animate({ 'font-size': "48px" }, 1000, function(){
performingUpAnimation = false;
});
performingUpAnimation = true;
}
}
}
$(document).on('scroll', performScroll);
});
On scroll event and position fixed
I edited my response for adding support for the "up" direction too. About using bootstrap for the animation, I have no idea how to do it, and I think it can't be done, because bootstrap is based mainly on applying CSS classes to different elements. CSS classes are discrete, but you are asking for animating something numerical, as the font-size property is. As much, you could create an animation that looks "staggered".
This may be a little too specific, but I have a jquery slider that I am using <p> classes instead of images to cycle through customer quotes. Basically the problem I am running into right now is when it is static and non moving (JS code is commeneted out) they are aligned how I want them to be. As soon as the JS is un commented, they stretch out of view and you just see a white box?
Any ideas?
How I want each panel to look like:
jsfiddle
So I sort of made this my Friday project. I've changed a whole lot of your code, and added a vertical-align to the quotes and authors.
Here's the fiddle http://jsfiddle.net/qLca2fz4/49/
I added a whole lot of variables to the top of the script so you could less typing throughout.
$(document).ready(function () {
//rotation speed and timer
var speed = 5000;
var run = setInterval(rotate, speed);
var slides = $('.slide');
var container = $('#slides ul');
var elm = container.find(':first-child').prop("tagName");
var item_width = container.width();
var previous = 'prev'; //id of previous button
var next = 'next'; //id of next button
Since you used a % based width I'm setting the pixel widths of the elements in case the screen is reszed
slides.width(item_width); //set the slides to the correct pixel width
container.parent().width(item_width);
container.width(slides.length * item_width); //set the slides container to the correct total width
As you had, I'm rearranging the slides in the event the back button is pressed
container.find(elm + ':first').before(container.find(elm + ':last'));
resetSlides();
I combined the prev and next click events into a single function. It checks for the ID of the element targeted in the click event, then runs the proper previous or next functions. If you reset the setInterval after the click event your browser has trouble stopping it on hover.
//if user clicked on prev button
$('#buttons a').click(function (e) {
//slide the item
if (container.is(':animated')) {
return false;
}
if (e.target.id == previous) {
container.stop().animate({
'left': 0
}, 1500, function () {
container.find(elm + ':first').before(container.find(elm + ':last'));
resetSlides();
});
}
if (e.target.id == next) {
container.stop().animate({
'left': item_width * -2
}, 1500, function () {
container.find(elm + ':last').after(container.find(elm + ':first'));
resetSlides();
});
}
//cancel the link behavior
return false;
});
I've found mouseenter and mouseleave to be a little more reliable than hover.
//if mouse hover, pause the auto rotation, otherwise rotate it
container.parent().mouseenter(function () {
clearInterval(run);
}).mouseleave(function () {
run = setInterval(rotate, speed);
});
I broke this in to its own function because it gets called in a number of different places.
function resetSlides() {
//and adjust the container so current is in the frame
container.css({
'left': -1 * item_width
});
}
});
//a simple function to click next link
//a timer will call this function, and the rotation will begin :)
And here's your rotation timer.
function rotate() {
$('#next').click();
}
It took me a little bit, but I think I figured out a few things.
http://jsfiddle.net/qLca2fz4/28/
First off, your console was throwing a few errors: first, that rotate wasn't defined and that an arrow gif didn't exist. Arrow gif was probably something you have stored locally, but I changed the 'rotate' error by changing the strings in the code here to your actual variables.
So, from:
run = setInterval('rotate()', speed);
We get:
run = setInterval(rotate, speed);
(No () based on the examples here: http://www.w3schools.com/jsref/met_win_setinterval.asp)
But I think a more important question is why your text wasn't showing up at all. It's because of the logic found here:
$('#slides ul').css({'left' : left_value});
You even say that this is setting the default placement for the code. But it isn't..."left_vaule" is the amount that you've calculated to push left during a slide. So if you inspect the element, you can see how the whole UL is basically shifted one slide's worth too far left, unable to be seen. So we get rid of 'left_value', and replace it with 0.
$('#slides ul').css({'left' : 0});
Now, there's nothing really handling how the pictures slide in, so that part's still rough, but this should be enough to start on.
Let me know if I misunderstood anything, or if you have any questions.
So, a few things:
1) I believe you are trying to get all of the lis to be side-by-side, not arranged up and down. There are a few ways to do this. I'd just make the ul have a width of 300%, and then make the lis each take up a third of that:
#slides ul {
....
width: 300%;
}
#slides li {
width: calc(100% / 3);
height:250px;
float:left;
}
2) You got this right, but JSFiddle automatically wraps all your JS inside a $(document).ready() handler, and your function, rotate needs to be outside, in the normal DOM. Just change that JSFiddle setting from 'onload' to 'no wrap - in head'
3) Grabbing the CSS value of an element doesn't always work, especially when you're dealing with animating elements. You already know the width of the li elements with your item_width variable. I'd just use that and change your code:
var left_indent = parseInt($('#slides ul').css('left')) - item_width;
$('#slides ul').animate({'left' : left_indent}, 1500, function () {
to:
$('#slides ul').stop().animate({'left' : -item_width * 2}, 1500, function () {
4) Throw in the .stop() as seen in the above line. This prevents your animations from overlapping. An alternative, and perhaps cleaner way to do this, would be to simply return false at the beginning of your 'next' and 'prev' functions if #slides ul is being animated, like so:
if ($('#slides ul').is(':animated')) return false;
And I think that's everything. Here's the JSFiddle. Cheers!
EDIT:
Oh, and you may also want to clearInterval at the beginning of the next and prev functions and then reset it in the animation callback functions:
$('#prev').click(function() {
if ($('#slides ul').is(':animated')) return false;
clearInterval(run);
$('#slides ul').stop().animate({'left' : 0}, 1500,function(){
....
run = setInterval('rotate()', speed);
});
});
I need some scripting like the TYPO3 extension / module that runs on this site : http://nyati-safari.dk/index.php?id=125 (Scroll to: Detaljeret Dagsprogram (inkluderet)).
The div is shown with a pixelspecific height and when the arrow is clicked the div changes to contentspecific height also the arrow changes when the div toggles.
Do this:
var div = $('#div');
$('#arrow').click(function () {
if (div.height() == 100) {
autoHeight = div.css('height', 'auto').height();
div.height(100).animate({
height: autoHeight
}, 500);
} else {
$('#div').animate({
height: '100'
}, 500);
}
});
JSFiddle: http://jsfiddle.net/ZG8ug/5/
Can even do something like this: http://jsfiddle.net/ZG8ug/6/ where the 'hidden' div is small on page load but when viewed and returned it is bigger. Might be useful to help users distinguish what has already been viewed. Could even do it the other way around too so the div takes up even less space when it has been viewed.
The current plugin, shown below, scrolls the top-most div in a series of divs with the same class upwards, then removes it from the container, and appends it to the bottom of the series (within the container). This gives the illusion of a vertical slideshow.
$.fn.rotateEach = function ( opts ) {
var $this = this,
defaults = {
delay: 5000
},
settings = $.extend(defaults, opts),
rotator = function ($elems) {
$elems.eq(0).slideUp(500, function(){
var $eq0 = $elems.eq(0).detach();
$elems.parent().append($eq0);
$eq0.fadeIn();
setTimeout(function(){ rotator( $($elems.selector) ); },
settings.delay);
});
};
setTimeout(function(){ rotator( $this ); }, settings.delay);
};
$('.dynPanelContent').rotateEach();
However, if there are a large number of elements to scroll through, this would make for a VERY long page. As such, I am attempting to re-write this script so that it accepts a parameter which will determine how many elements to display. Any elements exceeding this number will be hidden until they are in the top 'x' number of elements. Here is an example of what I have attempted to implement.
$.fn.rotateEach = function (opts) {
var $this = this,
defaults = {
delay: 5000,
//Add a parameter named elementsShown, pass in a default value of 3
elementsShown: 3
},
settings = $.extend(defaults, opts),
rotator = function ($elems) {
//Hide the elements that are past the number to be shown
for (i = settings.elementsShown; i <= $elems.eq; i++) {
$elems.eq(i).hide();
}
$elems.eq(0).slideUp(500, function () {
var $eq0 = $elems.eq(0).detach();
var $eqN = $elems.eq(settings.elementsShown) - 1;
//Check & Show the element that is now within the show range
if ($elems.eq() == $eqN) {
$elems.eq($eqN).show('slow');
}
$elems.parent().append($eq0);
$eq0.fadeIn();
setTimeout(function () { rotator($($elems.selector)); },
settings.delay);
});
};
You can use simple CSS for this, mate.
If your elements are all of the same height (which your problem has to assume: if you are rotating a whole bunch of things dynamically, you won't want your page to change height), then you don't really need to use JavaScript for this at all. Just set the height of the container to what you want and hide the overflow. Then when you remove and append, everything appears to work. This won't take care of your dynamic configuration, though.
Improved plug-in: http://jsfiddle.net/morrison/tTJaM/
Notes:
Added support for showing X elements.
Added support for rotating only certain elements.
Added support for stopping the rotations:
Stop after X milliseconds.
Stop after X rotations.
overflow-y:hidden is added to container dynamically.
Simplified your detaching/attaching.
Known Issues:
Displaying X elements doesn't check for a maximum.
I am creating a coverflow plugin but I have a slight problem when it first loads.
The size/styles of the images is set based on their position in the coverflow. When the page first loads the images all resize properly but they do not reposition themselves. If I them use the left and right navigation they work correctly.
I am not sure what is causing this. I thought it might be something to do with the variable that sets the starting position of the coverflow...
Here's my code:
<script type="text/javascript" src="/scripts/jquery-ui.js"></script>
<script type="text/javascript">
$(document).ready(function() {
var coverflowPos = Math.round($('#coverflow img').length / 2)
$('#coverflow img').each( function(i) {
$(this).css({'opacity' : 1-(Math.abs(coverflowPos-i)*0.4), 'z-index' : 100-(Math.abs(coverflowPos-i)) }).width(200-(Math.abs(coverflowPos-i)*50)).height(128-(Math.abs(coverflowPos-i)*50));
});
// If I run the testme() function here, it animates to the right place but I want it to start in this position rather than animate to it
$('#moveLeft').click( function() {
if(coverflowPos > 1) {
coverflowPos = coverflowPos-1
}
testme();
});
$('#moveRight').click( function() {
if(coverflowPos < $("#coverflow img").length -1) {
coverflowPos = coverflowPos+1
}
testme();
});
function testme() {
$('#coverflow img').each( function(i) {
$(this).animate({
opacity: 1-(Math.abs(coverflowPos-i)*0.4),
width: 200-(Math.abs(coverflowPos-i)*50),
height: 128-(Math.abs(coverflowPos-i)*50)
}, {
duration: 500,
easing: 'easeInOutSine'
}).css({ 'z-index' : 100-(Math.abs(coverflowPos-i)) });
});
};
});
</script>
And here's a link to a jsfiddle:
http://jsfiddle.net/r8NqP/4/
Calling testme() at the end of the ready() function moves them into place. It does ease them in though, which looks a bit odd, could get rid of the ease in testme() by adding a doease parameter.
Check you fist each :
'z-index' : 100-(Math.abs(coverflowPos-i)) }).width(200-(Math.abs(coverflowPos-i)*50)).height(128-(Math.abs(coverflowPos-i)*50));
I think U mean:
'z-index' : 100-(Math.abs(coverflowPos-i)),
'width' : 200-(Math.abs(coverflowPos-i)*50),
'height': 128-(Math.abs(coverflowPos-i)*50)
Linke In your testme() function ?!
After that, you can also add a "Hack", by executing testme(true); at the end of script.
And add, in your testme() function , a test parameter to set the duration at 0 or simply disable animate and replace by CSS().
But, it just a Hack.
200-(Math.abs(coverflowPos-i)*50) may be less than 0 -- e.g.,
200-(5-0)* 50= 200 - 250 = -50
And the negative width ends up not being applied, leaving the width at its original 200px value. The opacity gets set properly, so all you get is a huge blank space where the image is.
var width = 200-(Math.abs(coverflowPos-i)*50);
if ( width < 0 ) width = 0;
covers the init nicely.
I haven't bothered to check why it's okay once it's animated -- my guess is, that the images were already small, so it's not as noticeable.
The problem came from "Each index", that not correctly used to compute the Width and Height of the first image.
Try this :
$('#coverflow img').each( function(i) {
i++;
$(this).css({...
And remove the Blank.gif...
Here, you find my fork fiddle : http://jsfiddle.net/akarun/FQWQa/