I have this javascript file which is a modified version of the VideoLightBox script:
jQuery(function(){
var $=jQuery;
var swfID = "video_overlay";
if(!document.getElementById("vcontainer")){
$("body").append($("<div id='voverlay'></div>"));
$("#voverlay").append($("<div id = 'vcontainer'></div>"));
}
$("#videogallery a[rel]").overlay({
api:true,
expose: (0?{
color:'#424542',
loadSpeed:400,
opacity:0
}:null),
effect:"apple",
onClose: function(){
swfobject.removeSWF(swfID);
},
// create video object for overlay
onBeforeLoad: function(){
// check and create overlay contaner
var c = document.getElementById(swfID);
if(!c){
var d = $("<div></div>");
d.attr({id: swfID});
$("#vcontainer").append(d);
};
var wmkText="© 2011 BORKH";
var wmkLink="http://borkh.co.uk";
c = wmkText? $('<div></div>'):0;
if (c) {
c.css({
position:'absolute',
right:'38px',
top:'38px',
padding:'0 0 0 0'
});
$("#vcontainer").append(c);
};
// for IE use iframe
if (c && document.all){
var f = $('<iframe src="javascript:false"></iframe>');
f.css({
position:'absolute',
left:0,
top:0,
width:'100%',
height:'100%',
filter:'alpha(opacity=0)'
});
f.attr({
scrolling:"no",
framespacing:0,
border:0,
frameBorder:"no"
});
c.append(f);
};
var d = c? $(document.createElement("A")):c;
if(d){
d.css({
position:'relative',
display:'block',
'background-color':'',
color:'#626d73',
'font-family': 'RegisterSansBTNDmRegular, Helvetica, Arial',
'font-size':'11px',
'font-weight':'normal',
'font-style':'normal',
'text-decoration': 'none',
padding:'1px 5px',
opacity:.7,
filter:'alpha(opacity=70)',
width:'auto',
height:'auto',
margin:'0 0 0 0',
outline:'none'
});
d.attr({href:wmkLink});
d.html(wmkText);
d.bind('contextmenu', function(eventObject){
return false;
});
c.append(d);
}
// create SWF
var src = this.getTrigger().attr("href");
if (typeof(d)!='number' && (!c || !c.html || !c.html())) return;
if (false){
var this_overlay = this;
// if local
window.videolb_complite_event = function (){ this_overlay.close() };
// if youtoube
window.onYouTubePlayerReady = function (playerId){
var player = $('#'+swfID).get(0);
if (player.addEventListener) player.addEventListener("onStateChange", "videolb_YTStateChange");
else player.attachEvent("onStateChange", "videolb_YTStateChange");
window.videolb_YTStateChange = function(newState){
if (!newState) this_overlay.close()
}
}
}
swfobject.createSWF(
{ data:src, width:"100%", height:"100%", wmode:"opaque" },
{ allowScriptAccess: "always", allowFullScreen: true, FlashVars: (false?"complete_event=videolb_complite_event()&enablejsapi=1":"") },
swfID
);
}
}); });
The script opens a flash swf file in a "popup" lightbox fashion and plays it either from youtube or via a player locally. I was however wondering if it was possible to create a secondary swf to float on top of the player (noting that this of course would have the wmode:"transparent") and hereby create an opening curtain effect revealing the first swf and the player. I've been trying for quite some time now to load the top clip via createSWF and to create an additional div to contain it and float it using absolute position however I can't seem to get it right.. I know that the div float perfectly on top of each other when using:
<head>
<style type="text/css" media="screen">
<!--
#bottom{
position:absolute;
width: 500px;
height: 400px;
}
#top{
position:absolute;
width:500px;
height:400px;
top: 0px;
left: 0px;
}
-->
</style>
</head>
<body>
<div id="bottom">
"MAIN CLIP"
<div id="top">
"CURTAIN EFFECT"
</div>
</div>
However I'm not strong enough in javascripting to transfer it.
Any help, ideas, hints or suggestions are much appreciated!
Thanks
Andreas
I think your idea will work, but could get quite tricky.
What I would recommend instead is creating a "curtain swf" that instead loads something like the Chromeless YouTube player inside of it. This way you can listen for when the video is done loading/buffering and reveal the curtains when that happens.
Related
this is Flickity
I cannot express in English clearly, so if possible please help editing my question.
This is my web page
https://codepen.io/haozun/pen/ywNjvQ
When I open this page, I cannot use arrowkey to navigate different carousel-cell.
I can only use arrowkey after I have mouse clicking on that page.
How can I edit the code so that I can use arrowkey at the very beginning without click on it? i.e. I open this page in my browser, and then I can use arrowkey(37,39) to rotate it immediately. I want to use the keyboardHandlers once I open the page
Flickity.keyboardHandlers = {
// left arrow
37: function() {
var leftMethod = this.options.rightToLeft ? 'next' : 'previous';
this.uiChange();
this[ leftMethod ]();
},
// right arrow
39: function() {
var rightMethod = this.options.rightToLeft ? 'previous' : 'next';
this.uiChange();
this[ rightMethod ]();
},
};
I can edit all source code, including flickity.pkgd.min.js. And my page only contains one flickity.
The official site tells we must use tab (or leftclick) first, then we can really use arrowkeys to change cells.
It almost impossible someone-else will answer this question, And the former answerer has rejected my edit, so I have to answer myself.
Adding this to JS
document.addEventListener("DOMContentLoaded", function() {
init();
});
function init() {
let flkty = new Flickity(".carousel");
flkty.focus()
}
You need to create a new Flickity instance when your app initializes, then call next() on it. You can see in the demo below that as soon as you load your app, it will scroll to the next item in the carousel:
let flkty;
const delayMs = 1000;
document.addEventListener("DOMContentLoaded", function() {
init(true);
});
function init(shouldAutoScroll) {
flkty = new Flickity(".carousel");
if (shouldAutoScroll) {
//Start an carousel auto scroll
autoScroll();
} else {
//Just flip to next item and that's it..
flkty.next();
}
}
function autoScroll() {
if (flkty) {
setInterval(function() {
flkty.next();
}, delayMs);
}
}
.carousel-cell {
min-height: 30em;
padding: 1em;
margin: 0 3em 0 3em;
width: calc( 100vw - 9em);
max-width: 40em;
box-shadow: 0px 16px 20px 5px #7777;
}
<head>
<link rel="stylesheet" href="https://unpkg.com/flickity#2/dist/flickity.min.css">
</head>
<body>
<div class="carousel" id="main" data-flickity='{
"cellAlign": "center",
"contain": true,
"adaptiveHeight":true,
"freeScroll": false,
"accessibility":true,
"wrapAround": true,
"setGallerySize":true,
"hash":true,
"selectedAttraction": 0.05,
"friction": 0.3,
"prevNextButtons":false
}'>
<div class="carousel-cell" id="carousel-cell1">1LONGLONGLONGLONG</div>
<div class="carousel-cell" id="carousel-cell2">2LONGLONGLONGLONG</div>
<div class="carousel-cell" id="carousel-cell3">3LONGLONGLONGLONG</div>
</div>
<script src="https://unpkg.com/flickity#2/dist/flickity.pkgd.min.js"></script>
</body>
My company bought a timeline plugin and it throws an error in every browser. It still works in Chrome and FireFox but is totally busted in IE (v11)
The JS error has to do with a global variable (defined in audio.min.js) that is not being seen in a following JS file (jquery.timeline.js).
The JS files in the HTML page are listed with the JS file with the global variable, first, followed by the other JS file, where the error is being generated so that all looks right.
Not sure what could cause this...
<script type="text/javascript" src="/Timeline/js/jquery/jquery-1.7.1.min.js"></script>
<script type="text/javascript" src="/Timeline/js/audiojs/audio.min.js"></script>
<script type="text/javascript" src="/Timeline/js/jquery.timeline.js"></script>
Here is the line that causes the error:
audio.prettyPaused = 0;
The errors:
SCRIPT1028: Expected identifier, string or number
Unable to set property 'prettyPaused' of undefined or null reference
Uncaught TypeError: Cannot set property 'prettyPaused' of undefined
The var "audio" is defined in a separate JS file (audio.min.js), right at the top of the file:
//SHARED VARIABLE TO INTERACT WITH VIDEO & PRETTYPHOTO
var audio;
Here is the line in context:
//HTML5 AUDIO PLAYER
audiojs.events.ready(function() {
var as = audiojs.createAll({
autoplay: true,
loop: true
});
audio.prettyPaused = 0;
});
Even More Context
//jquery.timeline.js
jQuery(document).ready(function() {
jQuery.myTimeline();
});
(function($) {
// GLOBAL VARS
var preload, container, tl, vidRoll, imgRoll, readBt, viewport, images, milestones, content, bar, track, dragger, marksAmount, fadeInDelay;
// CLASS CONSTRUCTOR / INIT FUNCTION
$.myTimeline = function() {
//SETUP VARS
preload = $('.preload');
container = $('#timeline_container');
tl = $('#timeline');
vidRoll = $('.video_rollover');
imgRoll = $('.image_rollover');
readBt = $('.readmore');
viewport = $('#timeline .viewport');
images = $('#timeline .viewport .images');
milestones = $('#timeline .milestones');
content = $('#timeline .milestones .content');
bar = $('#timeline .scrollbar');
track = $('#timeline .scrollbar .track');
dragger = $('#timeline .scrollbar .track .dragger');
marksAmount = $('.marks > div').length;
fadeInDelay = parseInt(tl.attr("data-fadeInDelay"));
//CONFIG ALL ELEMENTS SIZES AND POSITIONS BASED ON HTML ATTRIBS
container.css("width", tl.attr("data-width"));
container.css("height", tl.attr("data-height"));
images.css("width", tl.attr("data-imagesWidth"));
viewport.css("height", tl.attr("data-imagesHeight"));
content.css("width", tl.attr("data-contentWidth"));
milestones.css("height", tl.attr("data-contentHeight"));
bar.css("top", tl.attr("data-imagesHeight") - tl.attr("data-draggerHeight"));
track.css("height", tl.attr("data-draggerHeight"));
dragger.css("height", tl.attr("data-draggerHeight"));
//PRELOAD & GLOBAL FADE IN
preload.delay(fadeInDelay - 500).animate({ opacity:0 }, 500, 'easeOutQuad');
container.delay(fadeInDelay).animate({ opacity:1 }, 1000, 'easeOutQuad');
//HTML5 AUDIO PLAYER
audiojs.events.ready(function() {
var as = audiojs.createAll({
autoplay: true,
loop: true
});
audio.prettyPaused = 0;
});
//PRETTYPHOTO LIGHTBOX GALLERY
$('a[data-rel]').each(function() {
$(this).attr('rel', $(this).data('rel'));
});
$("a[rel^='prettyPhoto']").prettyPhoto({social_tools:false});
//TIPSY - TOOLTIP
readBt.tipsy({ gravity: 'w', fade: true, offset: 5 });
//IMAGE ROLLOVER ICON
imgRoll.append("<span></span>");
imgRoll.hover(function(){
$(this).children("span").stop(true, true).fadeIn(600);
},function(){
$(this).children("span").stop(true, true).fadeOut(200);
});
//VIDEO ROLLOVER ICON
vidRoll.append("<span></span>");
vidRoll.hover(function(){
$(this).children("span").stop(true, true).fadeIn(600);
},function(){
$(this).children("span").stop(true, true).fadeOut(200);
});
//VIDEO THUMB STOPS MUSIC ON CLICK (IF PLAYING)
vidRoll.click(function() {
if (audio.playing) {
audio.prettyPaused = 1;
audio.pause();
} else {
audio.prettyPaused = 0;
}
});
//START DRAG IMAGES FUNCTION
startDrag(images);
//SCROLLBAR MILESTONES MARKS
for ( var i = 0; i < marksAmount; i++ ) {
current = $('#m'+i);
current.stop(true, true)
.delay(fadeInDelay + 500)
.animate({ left:current.attr("data-xpos"), opacity:1 }, 700 + 100*i, 'easeOutQuad')
.show()
.tipsy({ gravity: 's', fade: true, offset: 3, fallback: current.attr("data-label") });
};
//INIT SCROLLBAR
tl.tinyscrollbar({
wheel: 20,
mouseWheel: tl.attr("data-mouseWheel"),
size: tl.attr("data-width"),
draggerWidth: tl.attr("data-draggerWidth")
});
} // END OF CLASS CONSTRUCTOR
var audio; defines it, but doesn't initialize it. That's the problem. Nothing you've shown suggests that audio is actually initialized. My guess would be that audio and audiojs are probably intended to be the same thing, but that's a guess based on just what you provided.
Unable to set property 'prettyPaused' of undefined or null reference means that var audio has not been initialized, so it could be a global problem or just not initialized.
You say it gets created in that script - very well, add code below to make sure:
<script type="text/javascript" src="/Timeline/js/audiojs/audio.min.js">
console.log(audio);
</script>
I would suspect that's going to return "undefined" or "null". Means you have to create the object or request it somehow via that script.
I'm new to JQuery and Javascript, and can't find a good example online of how to refresh just the html object inside a div.
The html object is this graph from cosm.com
index.html
<div id="graph" >
<object type="text/html" style="width:100%; height:100%; margin:1%;"data="https://api.cosm.com/v2/feeds/120687/datastreams/sensor_reading.png?width=740&height=150&colour=%230055ff&duration=5minutes&legend=Vibrations%20measure%20%200%20-%3E%201024&title=Foosball%20Vibrations%20-%205%20Minutes&stroke_size=4&show_axis_labels=true&detailed_grid=true&scale=manual&max=75&timezone=Mountain%20Time%20(US%20%26%20Canada)" >
</object>
</div>
script.js
$(document).ready( function() {
updateGraph;
setInterval (updateGraph, 2000);
}
function updateGraph() {
//This line is not working!!!!
$('#graph').reload();
//$('#graph').load();
}
http://jsfiddle.net/spuder/PNK4k/
Try this out http://jsfiddle.net/Bvpft/16/
Tested in Chrome and FireFox. It refreshes and redownloads the image but not sure what it's supposed to be doing beyond that.
HTML
<!DOCTYPE html>
<body>
<div id="graph" >
<object type="text/html" style="width:100%; height:100%; margin:1%;" data="">
</object>
</div>
</body>
Javascript
$(document).ready( function() {
var graph = $('#graph'),
uri = 'https://api.cosm.com/v2/feeds/120687/datastreams/sensor_reading.png?',
params = {
width: 740,
height: 150,
colour: '#0055ff',
duration: '5minutes',
legend: 'Vibration measure 0 -> 1024 ',
title: 'Foosball Vibrations - 5 Minutes',
show_axis_labels: 'true',
detailed_grid: 'true',
scale: 'manual',
max: 75,
timezone: 'Mountain Time (US & Canada)'
};
var updateGraph = function() {
var data = uri + $.param(params);
graph.empty();
graph.append($('<object/>')
.prop({'type': 'text/html', data: data})
.css({'width': '100%', 'height': '100%'}))
};
updateGraph();
setInterval (updateGraph, 1000);
});
Edited - Changed to Image, made non-flickering, added no-caching (Tested in IE10, Chrome and FireFox): http://jsfiddle.net/JAYDb/4/
HTML
<div id="graph" ></div>
CSS
#graph {
background-color:#C0C0C0;
margin: 0 auto;
min-height: 200px ;
min-width: 750px ;
display: inline-block;
}
#graphObject{
display: block;
width: 100%;
}
Javascript
$(document).ready( function() {
var uri = 'https://api.cosm.com/v2/feeds/120687/datastreams/sensor_reading.png?',
params = {
width: 740,
height: 150,
colour: '#0055ff',
duration: '5minutes',
legend: 'Vibration measure 0 -> 1024 ',
title: 'Foosball Vibrations - 5 Minutes',
show_axis_labels: 'true',
detailed_grid: 'true',
scale: 'manual',
max: 75,
timezone: 'Mountain Time (US & Canada)'
};
var data = uri + $.param(params),
graph = $('#graph'),
obGraph = $('<img/>').prop({'id': 'graphObject'});
var updateGraph = function() {
var date = new Date(),
src = data + '&' + date.getTime();
obGraph.prop('src', '');
obGraph.prop('src', src);
};
graph.empty().append(obGraph);
updateGraph();
setInterval (updateGraph, 1000);
});
A closing bracket is missing?
$(document).ready
( function()
{
updateGraph;
setInterval (updateGraph, 2000);
}
); // missing
You're jsfiddle is not working, because no jQuery version was selected. I've made a working example:
$(document).ready( function() {
alert("OK");
updateGraph();
window.setInterval(updateGraph, 5000);
} );
function updateGraph() {
//This line is not working!!!!
alert("ok");
//$('graph').reload(); // unknown method?
}
http://jsfiddle.net/mmGT9/4/
What do you mean with "$('graph').reload(); ? Is that a custom function?
If you want to reload the "object", I would remove the object from the HTML area and leave just the blank DIV. Then add the following line in your javascript function.
$("#graph").html('<object type="text/html" style="width:100%; height:100%; margin:1%; " data="https://api.cosm.com/v2/feeds/120687/datastreams/sensor_reading.png?width=740&height=150&colour=%230055ff&duration=5minutes&legend=Vibrations%20measure%20%200%20-%3E%201024&title=Foosball%20Vibrations%20-%205%20Minutes&stroke_size=4&show_axis_labels=true&detailed_grid=true&scale=manual&max=75&timezone=Mountain%20Time%20(US%20%26%20Canada)" ></object>');
This will set the object into the element with the id "graph". Existing content within the div will be overridden. The function is called every n seconds and replaces the object, which force a reload. You can do it more pretty by using a variable.
Here is an example: http://jsfiddle.net/mmGT9/5/
jsFiddle
This Works..
I changed your object to an img tag
<img id='obj' style="width:100%; height:100%; margin:1%; " src=...
$('document').ready( function() {
var i;
var src = $('#obj').prop('src');
setInterval(function(){
i++;
$('#obj').prop('src',src+"&"+i);
},5000);
});
I'm trying to create an accordion widget in jquery similar to jquery's accordion plugin, with the difference that I want the handles to appear below their respective content instead of above. My accordion works by decreasing the height of the open content section while at the same time increasing the height of the clicked content section. I've posted an example here. My problem is that the animations aren't started at exactly the same time, and there is a noticeable "jump" due to the slight delay before the second animation is started.
Scriptaculous has a function called Effect.Parallel that allows you to create an array of animation effects and execute them in parallel. Unfortunately, I can't seem to find something similar with jquery.
Is there a way I can run precise parallel animations on separate divs in jquery?
Edit: I'm as much interested in alternative methods of coding this accordion widget. So if there is any other method people think would work I'm open to that.
One more answer, hopefully my last one...
Unfortunately, John Resig's syncAnimate method is not quite up to snuff for the accordion-type animation I want to do. While it works great on Firefox, I couldn't get it working smoothly on IE or Safari.
With that said, I decided to bite the bullet and write my own animation engine that does simple parallel animations. The class-code uses jquery functions but is not a jquery plugin. Also, I've only set it up to do size/position animations, which is all I need.
ParallelAnimations = function(animations, opts){
this.init(animations, opts);
};
$.extend(ParallelAnimations.prototype, {
options: {
duration: 250
},
rules: {},
init: function(animations, opts){
// Overwrite the default options
$.extend(this.options, opts);
// Create a set of rules to follow in our animation
for(var i in animations){
this.rules[i] = {
element: animations[i].element,
changes: new Array()
};
for(var style in animations[i].styles){
// Calculate the start and end point values for the given style change
var from = this.parse_style_value(animations[i].element, style, "");
var to = this.parse_style_value(animations[i].element, style, animations[i].styles[style]);
this.rules[i].changes.push({
from: from,
to: to,
style: style
});
}
}
this.start()
},
/*
* Does some parsing of the given and real style values
* Allows for pixel and percentage-based animations
*/
parse_style_value: function(element, style, given_value){
var real_value = element.css(style);
if(given_value.indexOf("px") != -1){
return {
amount: given_value.substring(0, (given_value.length - 2)),
unit: "px"
};
}
if(real_value == "auto"){
return {
amount: 0,
unit: "px"
};
}
if(given_value.indexOf("%") != -1){
var fraction = given_value.substring(0, given_value.length - 1) / 100;
return {
amount: (real_value.substring(0, real_value.length - 2) * fraction),
unit: "px"
};
}
if(!given_value){
return {
amount: real_value.substring(0, real_value.length - 2),
unit: "px"
};
}
},
/*
* Start the animation
*/
start: function(){
var self = this;
var start_time = new Date().getTime();
var freq = (1 / this.options.duration);
var interval = setInterval(function(){
var elapsed_time = new Date().getTime() - start_time;
if(elapsed_time < self.options.duration){
var f = elapsed_time * freq;
for(var i in self.rules){
for(var j in self.rules[i].changes){
self.step(self.rules[i].element, self.rules[i].changes[j], f);
}
}
}
else{
clearInterval(interval);
for(var i in self.rules){
for(var j in self.rules[i].changes)
self.step(self.rules[i].element, self.rules[i].changes[j], 1);
}
}
}, 10);
},
/*
* Perform an animation step
* Only works with position-based animations
*/
step: function(element, change, fraction){
var new_value;
switch(change.style){
case 'height':
case 'width':
case 'top':
case 'bottom':
case 'left':
case 'right':
case 'marginTop':
case 'marginBottom':
case 'marginLeft':
case 'marginRight':
new_value = Math.round(change.from.amount - (fraction * (change.from.amount - change.to.amount))) + change.to.unit;
break;
}
if(new_value)
element.css(change.style, new_value);
}
});
Then the original Accordion class only needs to be modified in the animate method to make use of the new call.
Accordion = function(container_id, options){
this.init(container_id, options);
}
$.extend(Accordion.prototype, {
container_id: '',
options: {},
active_tab: 0,
animating: false,
button_position: 'below',
duration: 250,
height: 100,
handle_class: ".handle",
section_class: ".section",
init: function(container_id, options){
var self = this;
this.container_id = container_id;
this.button_position = this.get_button_position();
// The height of each section, use the height specified in the stylesheet if possible
this.height = $(this.container_id + " " + this.section_class).css("height");
if(options && options.duration) this.duration = options.duration;
if(options && options.active_tab) this.active_tab = options.active_tab;
// Set the first section to have a height and be "open"
// All the rest of the sections should have 0px height
$(this.container_id).children(this.section_class).eq(this.active_tab)
.addClass("open")
.css("height", this.height)
.siblings(this.section_class)
.css("height", "0px");
// figure out the state of the handles
this.do_handle_logic($(this.container_id).children(this.handle_class).eq(this.active_tab));
// Set up an event handler to animate each section
$(this.container_id + " " + this.handle_class).mouseover(function(){
if(self.animating)
return;
self.animate($(this));
});
},
/*
* Determines whether handles are above or below their associated section
*/
get_button_position: function(){
return ($(this.container_id).children(":first").hasClass(this.handle_class) ? 'above' : 'below');
},
/*
* Animate the accordion from one node to another
*/
animate: function(handle){
var active_section = (this.button_position == 'below' ? handle.prev() : handle.next());
var open_section = handle.siblings().andSelf().filter(".open");
if(active_section.hasClass("open"))
return;
this.animating = true;
// figure out the state of the handles
this.do_handle_logic(handle);
// Close the open section
var arr = new Array();
arr.push({
element: open_section,
styles: {
"height": "0px"
}
});
arr.push({
element: active_section,
styles: {
"height": this.height
}
});
new ParallelAnimations(arr, {duration: this.duration});
var self = this;
window.setTimeout(function(){
open_section.removeClass("open");
active_section.addClass("open");
self.animating = false;
}, this.duration);
},
/*
* Update the current class or "state" of each handle
*/
do_handle_logic: function(handle){
var all_handles = handle.siblings(".handle").andSelf();
var above_handles = handle.prevAll(this.handle_class);
var below_handles = handle.nextAll(this.handle_class);
// Remove all obsolete handles
all_handles
.removeClass("handle_on_above")
.removeClass("handle_on_below")
.removeClass("handle_off_below")
.removeClass("handle_off_above");
// Apply the "on" state to the current handle
if(this.button_position == 'below'){
handle
.addClass("handle_on_below");
}
else{
handle
.addClass("handle_on_above");
}
// Apply the off above/below state to the rest of the handles
above_handles
.addClass("handle_off_above");
below_handles
.addClass("handle_off_below");
}
});
The HTML is still called the same way:
<html>
<head>
<title>Parallel Accordion Animation</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="ui.js"></script>
<script type="text/javascript">
$(document).ready(function(){
new Accordion("#accordion");
});
</script>
<style type="text/css">
#accordion{
position: relative;
}
#accordion .handle{
width: 260px;
height: 30px;
background-color: orange;
}
#accordion .section{
width: 260px;
height: 445px;
background-color: #a9a9a9;
overflow: hidden;
position: relative;
}
</style>
</head>
<body>
<div id="accordion">
<div class="section"><!-- --></div>
<div class="handle">handle 1</div>
<div class="section"><!-- --></div>
<div class="handle">handle 2</div>
<div class="section"><!-- --></div>
<div class="handle">handle 3</div>
<div class="section"><!-- --></div>
<div class="handle">handle 4</div>
<div class="section"><!-- --></div>
<div class="handle">handle 5</div>
</div>
</body>
</html>
There are a few things I may add in the future:
- Queued Animations
- Animations for other types of styles (colors,etc)
John Resig posted a synchronized animation sample (no instructions, click a colored box). It might take some work to figure out how to apply it to your control, but it could be a good place to start.
This does not solve running animations in parallel however it reproduces your expected behavior without the jitter. I placed section inside of handle to reduce the number of animations. You could use andSelf() to make the code smaller but it would be harder to read. You will need to make some style tweaks.
<html>
<head>
<title>Accordion Test</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#accordion .handle").click(function(){
var open = $(this).parent().children(".section, .open");
var active = $(this);
if (!active.hasClass("open"))
{
if (active.hasClass("up"))
{
console.log("up");
active.animate({top:"+=100"}).removeClass("up");
active.nextAll(".handle").andSelf().filter(".up").animate({top:"+=100"}).removeClass("up");
$(".section", active).slideUp();
$(".section", active.nextAll()).slideUp();
$(".section", active.prev()).slideDown();
}
else
{
active.prevAll(".handle").not(".up").animate({top:"-=100"}).addClass("up");
$(".section", active.prev()).slideDown();
}
open.removeClass("open");
active.addClass("open");
}
});
});
</script>
<style type="text/css">
#accordion{
width: 200px;
position:relative;
}
#accordion .section{
width: 196px;
margin-left: 2px;
height: 100px;
background-color: #b9b9b9;
display:none;
}
#accordion .handle{
width: 200px;
height: 30px;
background-color: #d9d9d9;
border: 1px solid black;
cursor: pointer;
cursor: hand;
position: absolute;
}
#accordion .handle .header {
height: 30px;
}
</style>
</head>
<body>
<div id="accordion">
<div id="s1" class="section open" style="display:block">This is section 1</div>
<div class="handle open" style="top:100;">
<div class="header">handle 1</div>
<div class="section">This is section 2</div>
</div>
<div class="handle" style="top:130;">
<div class="header">handle 2</div>
<div class="section">This is section 3</div>
</div>
<div class="handle" style="top:160;">
<div class="header">handle 3</div>
<div class="section">This is section 4</div>
</div>
<div class="handle" style="top:190;">
<div class="header">handle 4</div>
<div class="section">This is section 5</div>
</div>
<div class="handle" style="top:220;">
<div class="content">handle 5</div>
</div>
</div>
</body>
</html>
Thanks Adam Plumb for a really great solution to parallel animations. I had a small problem with it though and that was that it somehow saved roles from earlier animations i fixed that by setting the rules to {} before adding them in the init function. It can probably be done in a better way though. I also added a callback function that is called when the animation have finished.
ParallelAnimations = function(animations, opts){
this.init(animations, opts);
};
$.extend(ParallelAnimations.prototype, {
options: {
duration: 250,
callback: null
},
rules: {},
init: function(animations, opts){
// Overwrite the default options
$.extend(this.options, opts);
// Create a set of rules to follow in our animation
this.rules = {}; // Empty the rules.
for(var i in animations){
this.rules[i] = {
element: animations[i].element,
changes: new Array()
};
for(var style in animations[i].styles){
// Calculate the start and end point values for the given style change
var from = this.parse_style_value(animations[i].element, style, "");
var to = this.parse_style_value(animations[i].element, style, animations[i].styles[style]);
this.rules[i].changes.push({
from: from,
to: to,
style: style
});
}
}
this.start()
},
/*
* Does some parsing of the given and real style values
* Allows for pixel and percentage-based animations
*/
parse_style_value: function(element, style, given_value){
var real_value = element.css(style);
if(given_value.indexOf("px") != -1){
return {
amount: given_value.substring(0, (given_value.length - 2)),
unit: "px"
};
}
if(real_value == "auto"){
return {
amount: 0,
unit: "px"
};
}
if(given_value.indexOf("%") != -1){
var fraction = given_value.substring(0, given_value.length - 1) / 100;
return {
amount: (real_value.substring(0, real_value.length - 2) * fraction),
unit: "px"
};
}
if(!given_value){
return {
amount: real_value.substring(0, real_value.length - 2),
unit: "px"
};
}
},
/*
* Start the animation
*/
start: function(){
var self = this;
var start_time = new Date().getTime();
var freq = (1 / this.options.duration);
var interval = setInterval(function(){
var elapsed_time = new Date().getTime() - start_time;
if(elapsed_time < self.options.duration){
var f = elapsed_time * freq;
for(var i in self.rules){
for(var j in self.rules[i].changes){
self.step(self.rules[i].element, self.rules[i].changes[j], f);
}
}
}
else{
clearInterval(interval);
for(var i in self.rules){
for(var j in self.rules[i].changes)
self.step(self.rules[i].element, self.rules[i].changes[j], 1);
}
if(self.options.callback != null) {
self.options.callback(); // Do Callback
}
}
}, 10);
},
/*
* Perform an animation step
* Only works with position-based animations
*/
step: function(element, change, fraction){
var new_value;
switch(change.style){
case 'height':
case 'width':
case 'top':
case 'bottom':
case 'left':
case 'right':
case 'marginTop':
case 'marginBottom':
case 'marginLeft':
case 'marginRight':
new_value = Math.round(change.from.amount - (fraction * (change.from.amount - change.to.amount))) + change.to.unit;
break;
}
if(new_value)
element.css(change.style, new_value);
}
});
I think your problem isn't timing but fractional division of a pixel. If you try this code it looks smooth for handle 1 and 2 but not others in Firefox 3 but still looks jumpy in chrome.
active
.animate({ height: "100px" })
.siblings(".section")
.animate({ height: "0px" });
Have you thought about making the position of the elements static or absolute? If your only moving the position of two elements you don't have to worry about the other ones jumping. Give me a second and I'll try to make an example.
Update: I'm no longer using John Resig's syncAnimate plugin. See my later answer for the final solution
I just wanted to supply the final working solution that I'm employing on my project. It uses the syncAnimate plugin that John Resig wrote (posted by Corbin March).
This code will:
Read and use the section height from CSS
Allow you to set the animation duration, and default active section through an options object.
Automatically detect handle position relative to section and adjusts accordingly. So you move the handles above or below a section in the markup and not have to change the js code.
HTML
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="ui.js"></script>
<script type="text/javascript">
$(document).ready(function(){
new Accordion("#accordion", {active_tab: 0});
});
</script>
<style type="text/css">
#accordion .handle{
width: 260px;
height: 30px;
background-color: orange;
}
#accordion .section{
width: 260px;
height: 445px;
background-color: #a9a9a9;
overflow: hidden;
position: relative;
}
</style>
<div id="accordion">
<div class="section">Section Code</div>
<div class="handle">handle 1</div>
<div class="section">Section Code</div>
<div class="handle">handle 2</div>
<div class="section">Section Code</div>
<div class="handle">handle 3</div>
<div class="section">Section Code</div>
<div class="handle">handle 4</div>
<div class="section">Section Code</div>
<div class="handle">handle 5</div>
</div>
ui.js
Accordion = function(container_id, options){
this.init(container_id, options);
}
$.extend(Accordion.prototype, {
container_id: '',
options: {},
active_tab: 0,
animating: false,
button_position: 'below',
duration: 250,
height: 100,
handle_class: ".handle",
section_class: ".section",
init: function(container_id, options){
var self = this;
this.container_id = container_id;
this.button_position = this.get_button_position();
// The height of each section, use the height specified in the stylesheet if possible
this.height = $(this.container_id + " " + this.section_class).css("height");
if(options && options.duration) this.duration = options.duration;
if(options && options.active_tab) this.active_tab = options.active_tab;
// Set the first section to have a height and be "open"
// All the rest of the sections should have 0px height
$(this.container_id).children(this.section_class).eq(this.active_tab)
.addClass("open")
.css("height", this.height)
.siblings(this.section_class)
.css("height", "0px");
// figure out the state of the handles
this.do_handle_logic($(this.container_id).children(this.handle_class).eq(this.active_tab));
// Set up an event handler to animate each section
$(this.container_id + " " + this.handle_class).mouseover(function(){
if(self.animating)
return;
self.animate($(this));
});
},
/*
* Determines whether handles are above or below their associated section
*/
get_button_position: function(){
return ($(this.container_id).children(":first").hasClass(this.handle_class) ? 'above' : 'below');
},
/*
* Animate the accordion from one node to another
*/
animate: function(handle){
var active_section = (this.button_position == 'below' ? handle.prev() : handle.next());
var open_section = handle.siblings().andSelf().filter(".open");
if(active_section.hasClass("open"))
return;
this.animating = true;
// figure out the state of the handles
this.do_handle_logic(handle);
// Close the open section
open_section
.syncAnimate(active_section, {"height": "0px"}, {queue:false, duration:this.duration}, '')
.removeClass("open");
// Open the new section
active_section
.syncAnimate(open_section, {"height": this.height}, {queue:false, duration:this.duration}, '')
.addClass("open");
var self = this;
window.setTimeout(function(){
self.animating = false;
}, this.duration);
},
/*
* Update the current class or "state" of each handle
*/
do_handle_logic: function(handle){
var all_handles = handle.siblings(".handle").andSelf();
var above_handles = handle.prevAll(this.handle_class);
var below_handles = handle.nextAll(this.handle_class);
// Remove all obsolete handles
all_handles
.removeClass("handle_on_above")
.removeClass("handle_on_below")
.removeClass("handle_off_below")
.removeClass("handle_off_above");
// Apply the "on" state to the current handle
if(this.button_position == 'below'){
handle
.addClass("handle_on_below");
}
else{
handle
.addClass("handle_on_above");
}
// Apply the off above/below state to the rest of the handles
above_handles
.addClass("handle_off_above");
below_handles
.addClass("handle_off_below");
}
});
You can't do a parallel effect in jquery with proper queue and scope. Scriptaculous got it right with queue and scope where jQuery on the other hand has .queue and .animate that are basically useless combined. The only thing jQuery is good for out of the box is pushing some style attributes around on the dom whereas Scriptaculous covers the whole spectrum of what's possible with effects.
You need to use Scriptaculous and John Resig should rethink jQuery.fx, he should have a look at scripty2.com while he's at it.
This is the first time I visited stack overflow and I saw a beautiful header message which displays a text and a close button.
The header bar is fixed one and is great to get the attention of the visitor. I was wondering if anyone of you guys know the code to get the same kind of header bar.
Quick pure JavaScript implementation:
function MessageBar() {
// CSS styling:
var css = function(el,s) {
for (var i in s) {
el.style[i] = s[i];
}
return el;
},
// Create the element:
bar = css(document.createElement('div'), {
top: 0,
left: 0,
position: 'fixed',
background: 'orange',
width: '100%',
padding: '10px',
textAlign: 'center'
});
// Inject it:
document.body.appendChild(bar);
// Provide a way to set the message:
this.setMessage = function(message) {
// Clear contents:
while(bar.firstChild) {
bar.removeChild(bar.firstChild);
}
// Append new message:
bar.appendChild(document.createTextNode(message));
};
// Provide a way to toggle visibility:
this.toggleVisibility = function() {
bar.style.display = bar.style.display === 'none' ? 'block' : 'none';
};
}
How to use it:
var myMessageBar = new MessageBar();
myMessageBar.setMessage('hello');
// Toggling visibility is simple:
myMessageBar.toggleVisibility();
Update:
Check out the DEMO
Code Used:
$(function(){
$('#smsg_link').click(function(){
showMessage('#9BED87', 'black', 'This is sample success message');
return false;
});
$('#imsg_link').click(function(){
showMessage('#FFE16B', 'black', 'This is sample info message');
return false;
});
$('#emsg_link').click(function(){
showMessage('#ED869B', 'black', 'This is sample error message');
return false;
});
});
/*
showMessage function by Sarfraz:
-------------------------
Shows fancy message on top of the window
params:
- bgcolor: The background color for the message box
- color: The text color of the message box
- msg: The message text
*/
var interval = null;
function showMessage(bgcolor, color, msg)
{
$('#smsg').remove();
clearInterval(interval);
if (!$('#smsg').is(':visible'))
{
if (!$('#smsg').length)
{
$('<div id="smsg">'+msg+'</div>').appendTo($('body')).css({
position:'fixed',
top:0,
left:0,
width:'98%',
height:'30px',
lineHeight:'30px',
background:bgcolor,
color:color,
zIndex:1000,
padding:'10px',
fontWeight:'bold',
fontSize:'18px',
textAlign:'center',
opacity:0.8,
margin:'auto',
display:'none'
}).slideDown('show');
interval = setTimeout(function(){
$('#smsg').animate({'width':'hide'}, function(){
$('#smsg').remove();
});
}, 3000);
}
}
}
If you want to create your own, check out the slideToggle function of jQuery.
The relevant css would include:
position: fixed;
top: 0;
width: 100%;
More information about position:fixed:
An element with position: fixed is positioned at the specified coordinates relative to the browser window. The element's position is specified with the "left", "top", "right", and "bottom" properties. The element remains at that position regardless of scrolling. Works in IE7 (strict mode)
If IE6 support is important to you, you may wish to research workarounds.
Here is an alternative method using jQuery which would also slide up/down on show/hide.
Add the following HTML right after the <body> tag in your page:
<div id="msgBox">
<span id="msgText">My Message</span>
<a id="msgCloseButton" href='#'>close</a>
</div>
Add this CSS to your stylesheet
#msgBox {
padding:10px;
background-color:Orange;
text-align:center;
display:none;
font:bold 1.4em Verdana;
}
#msgCloseButton{
float:right;
}
And finally here is the javascript to setup the close button and functions to show and hide the message bar:
/* Document Ready */
$(function () {
SetupNotifications();
});
SetupNotifications = function () {
//setup close button in msgBox
$("#msgCloseButton").click(function (e) {
e.preventDefault();
CloseMsg();
});
}
DisplayMsg = function (sMsg) {
//set the message text
$("#msgText").text(sMsg);
//show the message
$('#msgBox').slideDown();
}
CloseMsg = function () {
//hide the message
$('#msgBox').slideUp();
//clear msg text
$("#msgtText").val("");
}
To perform a simple test you could try this:
Show Message!
Something like this?
$("#bar").slideUp();
However, here I think they fade out first the bar then they bring the main container up, so that'd be something like that:
$("#bar").fadeOut(function(){
$("#container").animate({"top":"0px"});
});