The code already creates a navigation based on a JSON-file. The url are accessible by writing data.chapter[].subchapter[].url, the according title through data.chapter[].subchapter[].title
In case you are interested in that part or want the complete code, I uploaded it there: http://fabitosh.bplaced.net/SkriptET_iFrame_v2/
The goal now is to create a right sidebar which shows the links to the next and previous files in the structure. My approach is below.
What confuses me, is that back() is called until subchap is zero, when a link in #left is being clicked on. It should only be called when the previous-link is being clicked on. What do I have to change in order to achieve that?
Thanks a lot already!
var chap; //position in the array of the currently open chapter
var subchap; //position in the array of the currently open subchapter
function update_right() {
var path = data.chapter[chap].subchapter;
//Previous Page
if(subchap > 0) {
$("#prev").html("<b>Previous:</b><a href='"+path[subchap-1].url+"'>"+path[subchap-1].title+"</a><br/>");
$("#prev > a").click(back());
} else { //subchap == 0
$("#prev").html("");
};
}
function back() {
subchap--;
update_right();
}
$(document).ready(function() // DOM needs to exist in order to be able to add stuff in there
{
...Navigation being built up...
//------ onClick Navigation
$('#left > ul > li > a').click(
function(e)
{
chap = $(this).attr("data-chap");
subchap = $(this).attr("data-subchap");
update_right();
}
);
});
Related
So I have a photo gallery on my front page that switches between two images; each image links to a different page. Now, beside that gallery I have two links that go to the same two pages. The idea is that when image A is showing, side-link A should be highlighted with a border. The issue I keep running into is that once I get either side-link to be highlighted, I don't really know how to get it unhighlighted. Instead of switching with the images, they just stay highlighted.
var debugLink = "#firstLink";
function displayNextImage()
{
index++;
if(index >= indexgalpics.length)
{
index=0;
}
//---this is where I set the var debugLink which is
// supposed to carry the selected linke
if(index == 0)
{
console.log("first link selected");
//---when image A is showing, top side-link should be highlighted
//---ok so we know this much works, it seems these double equal
// signs are very important here.
//---makeActive();
//---but once makeActive() is called here, it makes the first link
// active for the entire time.
//---we can't put the entire style code here because same as before,
// it just keeps the link highlighted forever
debugLink = "#firstLink";
//---ok so i can set a var at top to a value in the makeActive() function,
// but i think the way JS works highlights either one forever
debugLink = "#firstLink";
}
else if(index == 1)
{
console.log("second link should be selected");
//---when image B is showing, bottom side-link should be highlighted
debugLink = "#secondLink";
}
showImg();
}
function makeActive()
{
var activeLink = document.querySelector(debugLink);
//---adds style to the debugLink
}
The function makeActive() is called in the function showImg(), and the function displayNextImage() is called in another function that sets the timer.
I changed your approach a little bit by using a boolean for the index, because you seem to only need two states.
Here is a revised version:
Note: In this code, I've used custom-made functions to make the code easier to read. I created hasClass(el,class), addClass(el,class), removeClass(el,class), toggleClass(el,class,bool). You can find them in the final JS Fiddle.
// Register the link elements
var links = {
true : document.getElementById('firstLink'),
false : document.getElementById('secondLink')
},
// Keep track of selected link (replaces your 'index')
leftLinkActive = false,
// Just so you don't go get it every time
gallery = document.getElementById('gallery');
// Let's trigger the gallery
displayNextImage();
// We'll change the active link and show the correct image
function displayNextImage(){
leftLinkActive = !leftLinkActive;
if(leftLinkActive){ console.log("first link selected"); }
else{ console.log("second link selected"); }
makeActive();
showImg();
// Let's do that again in 2 seconds
setTimeout(displayNextImage,2000);
}
// Add / remove the active class
function makeActive(){
addClass( links[ leftLinkActive ], 'active-class');
removeClass( links[ !leftLinkActive ], 'active-class');
}
// Change the image with a small fadeOut transition
function showImg(){
addClass(gallery,'fadeOut');
setTimeout(function(){
// Here we switch from img1 and img2
gallery.style.backgroundImage = 'url('+(leftLinkActive?'im1.jpg':'im2.jpg')+')';
removeClass(gallery,'fadeOut');
},200);
}
JS Fiddle Demo
I am using the Javascript below to animate an accordion (it's a slightly modified variant of the one explained here: http://tympanus.net/codrops/2010/04/26/elegant-accordion-with-jquery-and-css3/.
Now I wanted to have the first element to be open on pageload, so I figured I just give it some sort of extra-class via Javascript (and define that .active state via CSS) to have it open up.
This worked, however if I hover over any but the first-element with said .active class, the first element keeps its state, and stays open until I hover over it at least once.
So, what I want is: the first element of my accordion is open and collapses if the user hovers over any of the elements that are not the first. I think I need to add a line in the hover function to either take the class away of the first element or to give the new element the active state, but I don't know how to do it and keep breaking the thing.
<script type="text/javascript">
jQuery(function() {
activeItem = jQuery("#accordion li:first");
jQuery(activeItem).addClass('active');
jQuery('#accordion > li, #accordion > li.heading').hover(
function () {
var jQuerythis = jQuery(this);
jQuerythis.stop().animate({'height':'280px'},500);
jQuery('.heading',jQuerythis).stop(true,true).fadeOut();
jQuery('.bgDescription',jQuerythis).stop(true,true).slideDown(500);
jQuery('.description',jQuerythis).stop(true,true).fadeIn();
},
function () {
var jQuerythis = jQuery(this);
jQuerythis.stop().animate({'height':'40px'},1000);
jQuery('.heading',jQuerythis).stop(true,true).fadeIn();
jQuery('.description',jQuerythis).stop(true,true).fadeOut(500);
jQuery('.bgDescription',jQuerythis).stop(true,true).slideUp(700);
}
);
});
</script>
Looks like this is happening because each accordion item has its own hover event that takes care of its own animation. You can refactor the code slightly to make this easier to understand and reuse:
var activeItem = jQuery("#accordion li:first");
jQuery('#accordion > li, #accordion > li.heading').hover(
function () { hoverMe(jQuery(this)); },
function () { unhoverMe(jQuery(this)); }
);
//This gets called when cursor hovers over any accordion item
var hoverMe = function(jQuerythis) {
//If the first item is still active
if (activeItem) {
contract(activeItem); //...Shrink it!
activeItem = false;
}
//Expand the accordion item
expand(jQuerythis);
};
//This gets called when cursor moves out of accordion item
var unhoverMe = function(jQuerythis) {
contract(jQuerythis);
};
//I have moved the hover animation out into a separate function, so we can call it on page load
var expand = function(jQuerythis) {
jQuerythis.stop().animate({'height':'280px'},500);
jQuery('.heading',jQuerythis).stop(true,true).fadeOut();
jQuery('.bgDescription',jQuerythis).stop(true,true).slideDown(500);
jQuery('.description',jQuerythis).stop(true,true).fadeIn();
};
//I have moved the unhover animation out into a separate function, so we can contract the first active item from hoverMe()
var contract = function() {
jQuerythis.stop().animate({'height':'40px'},1000);
jQuery('.heading',jQuerythis).stop(true,true).fadeIn();
jQuery('.description',jQuerythis).stop(true,true).fadeOut(500);
jQuery('.bgDescription',jQuerythis).stop(true,true).slideUp(700);
};
//Now expand the first item
expand(activeItem);
I have put together a simplified version demonstrating the logic. Please let me know how you get on.
What I am trying to achieve here is when a user clicks an element it becomes hidden, once this happens I want to prepend inside the containing element another Element to make all these items visible again.
var checkIfleft = $('#left .module'),checkIfright = $('#right .module');
if(checkIfleft.hasClass('hidden')) {
$('#left').prepend('<span class="resetLeft">Reset Left</span>');
} else if(checkIfright.hasClass('hidden')) {
right.prepend('<span class="resetRight">Reset Right</span>');
}
I tried multiple ways, and honestly I believe .length ==1 would be my best bet, because I only want one element to be prepended. I believe the above JS I have will prepend a new element each time a new item is hidden if it worked.
Other Try:
var checkIfleft = $('#left .module').hasClass('hidden'),
checkIfright = $('#right .module').hasClass('hidden');
if(checkIfleft.length== 1) {
$('#left').prepend('<span class="resetLeft">Reset Left</span>');
} else if(checkIfright.length== 1) {
right.prepend('<span class="resetRight">Reset Right</span>');
}
else if(checkIfleft.length==0){
$('.resetLeft').remove()
} else if (checkIfright.length==0){
$('.resetRight').remove()
}
Basically if one element inside the container is hidden I want a reset button to appear, if not remove that reset button...
hasClass() only works on the first item in the collection so it isn't doing what you want. It won't tell you if any item has that class.
You can do something like this instead where you count how many hidden items there are and if there are 1 or more and there isn't already a reset button, then you add the reset button. If there are no hidden items and there is a reset button, you remove it:
function checkResetButtons() {
var resetLeft = $('#left .resetLeft').length === 0;
var resetRight = $('#left .resetRight').length === 0;
var leftHidden = $('#left .module .hidden').length !== 0;
var rightHidden = $('#right .module .hidden').length !== 0;
if (leftHidden && !resetLeft) {
// make sure a button is added if needed and not already present
$('#left').prepend('<span class="resetLeft">Reset Left</span>');
} else if (!leftHidden) {
// make sure button is removed if no hidden items
// if no button exists, this just does nothing
$('#left .resetLeft').remove();
}
if (rightHidden && !resetRight) {
$('#right').prepend('<span class="resetRight">Reset Right</span>');
} else if (!rightHidden) {
$('#right .resetRight').remove();
}
}
// event handlers for the reset buttons
// uses delegated event handling so it will work even though the reset buttons
// are deleted and recreated
$("#left").on("click", ".resetLeft", function() {
$("#left .hidden").removeClass("hidden");
$("#left .resetLeft").remove();
});
$("#right").on("click", ".resetRight", function() {
$("#right .hidden").removeClass("hidden");
$("#right .resetRight").remove();
});
FYI, if we could change the HTML to use more common classes, the separate code for left and right could be combined into one piece of common code.
Add the reset button when hiding the .module, if it's not already there :
$('#left .module').on('click', function() {
$(this).addClass('hidden');
var parent = $(this).closest('#left');
if ( ! parent.find('.resetLeft') ) {
var res = $('<span />', {'class': 'resetLeft', text : 'Reset Left'});
parent.append(res);
res.one('click', function() {
$(this).closest('#left').find('.module').show();
$(this).remove();
});
}
});
repeat for right side !
I've recently experimented with using CSS to do some of this stuff and I feel that it works quite well if you're not trying to animate it. Here is a jsfiddle where I can hide a module and show the reset button in one go by adding/removing a 'hideLeft' or 'hideRight' class to the common parent of the two modules.
It works by hiding both reset button divs at first. Then it uses .hideLeft #left { display:none;} and .hideLeft #right .resetLeft { display: block; } to hide the left module and display the reset button when .hideLeft has been added to whichever element both elements descend from. I was inspired by modernizr a while back and thought it was a neat alternative way to do things. Let me know what you think, if you find it helpful, and if you have any questions :)
I've got a bunch of 'project' divs that I want to expand when they're clicked on. If there's already a project open, I want to hide it before I slide out the new one. I also want to stop clicks on an already open project from closing and then opening it again.
Here's an example of what I mean (warning - wrote the code in the browser):
$('.projects').click(function() {
var clicked_project = $(this);
if (clicked_project.is(':visible')) {
clicked_project.height(10).slideUp();
return;
}
var visible_projects = $('.projects:visible');
if (visible_projects.size() > 0) {
visible_projects.height(10).slideUp(function() {
clicked_project.slideDown();
});
} else {
clicked_project.slideDown();
}
});
Really, my big issue is with the second part - it sucks that I have to use that if/else - I should just be able to make the callback run instantly if there aren't any visible_projects.
I would think this would be a pretty common task, and I'm sure there's a simplification I'm missing. Any suggestions appreciated!
slideToggle?
$('.projects').click(function() {
var siblings = $(this).siblings('.projects:visible');
siblings.slideUp(400);
$(this).delay(siblings.length ? 400 : 0).slideToggle();
});
Used a delay rather than a callback because the callback is called once per matched item. This would lead to multiple toggles if multiple items were visible.
Like this?
$(".projects")
.click(function () {
var a = $(this);
if (a.is(":visible")) return a.height(10)
.slideUp(), void 0;
var b = $(".projects:visible");
b.size() > 0 ? b.height(10)
.slideUp(function () {
a.slideDown()
}) : a.slideDown()
})
I am using JQuery 1.3.2-min in a project to handle JavaScript animations, ajax, etc. I have stored the file on the same server as the site instead of using Google. When I run the site locally on my development machine, everything works fine in FF, IE, Opera, and Safari (all the latest versions - I work from home and I only have 1 machine for personal use and development use) except for some CSS differences between them and when I go to the live site on my machine it works fine also. I have cleared my caches and hard refreshed the page, and it still works.
This is where it gets interesting however. When I send the site to my boss to test in various OS/Browser configurations, one page doesn't work correctly, some of it works, some doesn't. Also, the client (who uses IE 8) has also confirmed that it is not completely working - in fact he has told me that the page will work fine for a hour, and then just "turn off" for a while. I have never heard of this sort of thing before, and google isn't turning too much up. I have a hunch it may partly be with JQuery's .data(), but I'm not sure.
The page is basically nested unordered lists, and three basic actions happen on the list.
The top most unordered list is set to visible (all list via css are set to display: none to keep them hidden on a fresh page request); all list items divs are given a hover action of full opacity on mouseon, and faded back to 50% opacity on mouseoff; and then whenver a paragraph is clicked, the top most unordered list in that list item is displayed.
Here is my Javascript file for the page:
$(function() {
// Set first level ul visible
$('div#pageListing ul:first').css('display', 'block');
// Disable all the hyperlinks in the list
$('div#pageListing li a').click(function() {
var obj;
obj = $(this).parent(0).parent('div:first');
highlight(obj);
return false;
});
// List Item mouse hovering
$('#pageListing li').hover(
// Mouse On
function() {
if ($(this).children('div').attr('id') !== 'activePage') {
$(this).children('div').css('opacity', 1).css('filter',
'alpha(opacity=100)');
}
}, // Mouse off
function() {
if ($(this).children('div').attr('id') !== 'activePage') {
$(this).children('div').css('opacity', 0.4).css('filter',
'alpha(opacity=40)');
}
});
// Active list item highlighting
$('#pageListing li div').click(function() {
highlight($(this));
});
// Sub-list expanding/collapsing
$('#pageListing p.subpageslink').click(function() {
// Get next list
var subTree = $(this).parent('div').next('ul');
// If list is currently active, close it, else open it.
if (subTree.data('active') != true) {
subTree.data('active', true);
subTree.show(400);
} else {
subTree.data('active', false);
subTree.hide(400);
}
});
// Double clicking of list item - edit a page
$('#pageListing li div').dblclick(function() {
var classes = $(this).attr('class');
var classArray = classes.split(' ');
var pageID = classArray[1];
editPage(pageID);
});
// Handle button clicking
$('button#addPage').click(function() {
addPage();
});
$('button#editPage').click(function() {
var div = $('div#activePage');
var classes = div.attr('class');
var classArray = classes.split(' ');
var pageID = classArray[1];
editPage(pageID);
});
$('button#delPage').click(function() {
var div = $('div#activePage')
var classes = div.attr('class');
var classArray = classes.split(' ');
var pageID = classArray[1];
delPage(pageID);
});
});
// Highlighting of page when clicked
function highlight(obj) {
// Get previous hightlighted element
// and un-highlight
var oldElement = $('div#activePage');
oldElement.css('background', 'white');
oldElement.css('opacity', 0.4).css('filter', 'alpha(opacity=40)');
oldElement.removeAttr('id');
// highlight current selection
obj.attr('id', 'activePage');
obj.css('opacity', 1).css('filter', 'alpha(opacity=100)');
obj.css('background', '#9dc0f4');
// add appropiate action buttons
$('button.pageButton').css('display', 'inline');
}
function addPage() {
window.location = "index.php?rt=cms/editPage";
}
function delPage(page) {
var confirm = window.confirm("Are you sure? Any sub-pages WILL BE deleted also.");
if (confirm) {
var url = './components/cms/controller/forms/deletePage.php';
$.ajax( {
url : url,
type : 'GET',
data : 'id=' + page,
success : function(result) {
if (!result) {
document.location = "index.php?rt=cms";
} else {
window.alert('There was a problem deleting the page');
}
}
});
}
}
function editPage(page) {
var url = "index.php?rt=cms/editPage/" + page;
window.location = url;
}
Is it possible that you are linking to (some of) the script files using a src that points to a file on your local disk/HDD? If so, that would explain why it works only on your machine, as then only your machine has access to the script file.
Thank you one and all for your suggestions. The end problem was miscommunication. I work from home, and upload my projects to a SVN server, which the boss then uses to update the live server. Somehow, the correct files were not getting updated - a communication error on my part. Another possible reason was that the page, while being declared XHTML 1.0 Strict, had something like 50 validation errors (mosting incorrectly nested UL), and I cleaned that up to 5 errors. So thank you all, but again a sad example of the importance of team work communication.