I've got jquery waypoints working as expected. Basically if a user scrolls up or down I add or remove a class to a certain div depending on where the div is in the viewport. The code looks like this:
$(function() {
$('#names').waypoint('sticky', {
offset: 60,
stuckClass: 'stuck'
});
var bio_container = $('.bio-container');
bio_container.waypoint({
handler: function(direction,event) {
var active_section = $(this);
if (direction === 'down') {
$(this).addClass('active');
}
else {
$(this).removeClass('active');
}
},
offset: 'bottom-in-view'
});
bio_container.waypoint({
handler: function(direction,event) {
var active_section = $(this);
if (direction === 'down') {
$(this).removeClass('active');
}
else {
$(this).addClass('active');
}
},
offset: '300'
});
});
Where things get hairy is based on that 'active' state I'm trying to manipulate a different part of the dom. I'm trying to use a jquery hasClass function to add a new class. Unfortunately it doesn't seem to be picking up on the fact that the waypoints effected div has the 'active' class.
Here's my code for the hasClass:
$(function(){
if ($('.steve > .bio-container').hasClass('active')) {
$('#left-name').addClass('active');
}
});
I don't know if the hasClass function is out of scope or if there's something else going on here. I'm really new to javascript so I'm really at a loss. I appreciate any help I can get!
Related
Ok, I have totally retooled my approach (thank you superUntitled) and am making progress... I have an unordered list that users can toggle and my only remaining issue is that when I expand some items, and then click "Show All Cities" not all of the arrows go in the same direction. All the arrows change, including the ones on the list items already expanded. Any suggestions on how to resolve this?
Here's my new Javascript:
$("#Names .airports").hide();
$("#Names .close").hide();
$('#Expand').click(function(){
$('h2').children(".close").toggle();
$('h2').children(".arrow-down").toggle();
if($(this).text() == 'Hide All Cities')
{
$(this).text('Show All Cities');
$('#Names .airports').slideUp('fast');
}
else
{
$(this).text('Hide All Cities');
$('#Names .airports').slideDown('fast');
}
});
$("#Names h2").addClass("state").click(function() {
$(this).parent().children(".airports").slideToggle('fast')
$(this).children(".close").toggle();
$(this).children(".arrow-down").toggle();
Here's the fiddle illustrating the remaining problem:
http://jsfiddle.net/d3pxx8ds/127/
Thanks in advance
Here's my old JavaScript (reference only now):
$(function() {
$('li.state').prepend('<img src="http://png-4.findicons.com/files/icons/2227/picol/32/arrow_sans_up_32.png" class="arrow"/>');});
$('.stateNames ul').hide();
$('.stateNames li').click(function(e) {
e.stopPropagation();
$(this).find('ul').toggle();
var value = 0
$(".arrow").rotate({
bind:
{
click: function(){
value +=180;
$(this).rotate(value)
}
}
});
});
All i did was replace the order, i moved the .rotate to happen before the .toggle functions this would read the rotate first and subsequently do the toggle function thus setting the variable to 180 instead of waiting for the toggle to start, not allowing the variable to be set
$(function() {
$('li.state').prepend('<img src="http://png-4.findicons.com/files/icons/2227/picol/32/arrow_sans_up_32.png" class="arrow"/>');
});
$('.stateNames ul').hide();
var value = 0
$(".arrow").rotate({
bind : {
click : function() {
value += 180;
$(this).rotate(value)
}
}
});
$('.stateNames li').click(function(e) {
e.stopPropagation();
$(this).find('ul').toggle();
});
$(function() {
$('li.state').prepend('<img src="http://png-4.findicons.com/files/icons/2227/picol/32/arrow_sans_up_32.png" class="arrow"/>');
});
$('.stateNames ul').hide();
var value = 0
$(".arrow").rotate({
bind:
{
click: function(){
value +=180;
$(this).rotate(value)
if (value==180){
value=360;
}
else{
value=180;
}
}
}
});
$('.stateNames li').click(function(e) {
e.stopPropagation();
$(this).find('ul').toggle();
});
I added the if statement and it works for one full go around but on the next toggle the arrow doesn't rotate hope that helps for now i will keep looking in to it
Explanation in context(WordPress):
I want to check if my li element has a class called "current-menu-item" if it does I want it to stop the animate function. If it does not have that class continue animating. This script is currently not working. Thanks for any help.
$(document).ready(function ()
{
$('.nav li a').hover(function()
{
if ($(this).parentNode.hasClass('current-menu-item'))
{
alert('this item has the class of current-menu-item');
}
else
{
$(this).animate({color:'#3b3b3b'}, 300, 'linear');
}
},
function()
{
if ($(this).parentNode.hasClass('current-menu-item'))
{
// do nothing
}
else
{
$(this).animate({color:'#999'}, 300, 'linear');
}
});
});
if ($(this).parent().hasClass('current-menu-item'))
jQuery objects don't have a parentNode property. DOM elements do, but then the element returned by parentNode doesn't have jQuery methods like .hasClass(). Use jQuery's .parent() method instead.
I have two similar functions that I would like to combine so that I can use anywhere throughout the site. It's a simple jquery slideUp / slideDown effect that finds the div with the class 'hidden' and on click, it shows and hides
$('.clicker1').click(function(){
// grab the hidden content
var desc = $(this).parent().find('.hidden');
// remove toggle class and slide up
if ($(this).hasClass('toggled')) {
$(this).removeClass('toggled');
$(desc).slideUp(400, 'linear');
}
// add toggle class, slide down, and move the page up
else {
var loc = this;
$(desc).slideDown(400, 'linear', function () {
$.scrollTo($(loc).offset().top - 60, 400);
});
$(this).addClass('toggled');
$('.clicker1').not(this).removeClass('toggled');
$('.hidden').not(desc).slideUp(400, 'linear');
}
});
$('.clicker2').click(function(){
// grab the hidden content
var desc = $(this).parent().find('.hidden2');
// remove toggle class and slide up
if ($(this).hasClass('toggled')) {
$(this).removeClass('toggled');
$(desc).slideUp(400, 'linear');
}
// add toggle class, slide down, and move the page up
else {
var loc = this;
$(desc).slideDown(400, 'linear', function () {
$.scrollTo($(loc).offset().top - 60, 400);
});
$(this).addClass('toggled');
$('.clicker2').not(this).removeClass('toggled');
$('.hidden').not(desc).slideUp(400, 'linear');
}
});
Can I create one function and put in my own 'clickerX' and 'hiddenX' ?
It looks like the handlers only differ by the class's they use as selectors. The easiest approach is to write a function which generates a click handler based on the class names. Try the following
var makeHandler = function(className, hiddenClassName, ) {
return function() {
// grab the hidden content
var desc = $(this).parent().find(hiddenClassName);
// remove toggle class and slide up
if ($(this).hasClass('toggled')) {
$(this).removeClass('toggled');
$(desc).slideUp(400, 'linear');
}
// add toggle class, slide down, and move the page up
else {
var loc = this;
$(desc).slideDown(400, 'linear', function () {
$.scrollTo($(loc).offset().top - 60, 400);
});
$(this).addClass('toggled');
$(className).not(this).removeClass('toggled');
$(hiddenClassName).not(desc).slideUp(400, 'linear');
};
};
$('.clicker1').click(makeHandler('.clicker1', '.hidden'));
$('.clicker2').click(makeHandler('.clicker2', '.hidden2'));
Absolutely. You want to write a plugin. There's tons of tutorials on making a jQuery plugin, but the official docs give a good start.
Hopefully this is a simple request. I found this code that will work perfectly for what I want to do (Rotate through list items while fading in and out) http://jsfiddle.net/gaby/S5Cjm/1/ . However, I am looking to have the animation pause on mouse over and resume on mouse out. I am a novice at the moment with Javascript and JQuery, so any help would be appreciated.
Thanks.
EDIT: Side questions: Is there a benefit to using JQuery to do this? Would a stand alone script be more appropriate?
I attached the hover event to your list items. The over function stops the animation and all following animations using jQuery.stop(true). The out function resumes the animation:
http://jsfiddle.net/US4Fc/1/
var duration = 1000
function InOut(elem) {
elem.delay(duration).fadeIn(duration).delay(duration).fadeOut(
function() {
if (elem.next().length > 0) {
InOut(elem.next());
}
else {
InOut(elem.siblings(':first'));
}
});
}
$(function() {
$('#content li').hide().hover(
function() {
$(this).stop(true)
},
function() {
var curOp = Number($(this).css("opacity"));
$(this).fadeTo(duration*(1-curOp), 1, function() {
InOut($(this))
});
}
);
InOut($('#content li:first'));
});
Will this work for you?
$(function(){
var active;
$('#content li').hide().hover(
function(){
active = $(this).stop();
},
function(){
active && InOut(active);
}
);
InOut( $('#content li:first') );
});
I am working on a "one page" website with a fixed navigation and about 5 different pages inside the one document.
UPDATED WORKING LINK
http://www.coco-works.com/Archive/ LIVE VERSION
I'm having trouble with the active class addition. When you click Keep in Touch or Home, the class is not applied. As you can see from the live version, it's not function properly.
The page works something like this;
And here is the JavaScript;
$(document).ready(function() {
$('body').click(function(event) {
if (event.target.nodeName.toLowerCase() == 'a') {
var op = $(event.target);
var id = op.attr('href');
if (id.indexOf('#') == 0) {
$.scrollTo(id, 1000, {
offset: {
top: 75
},
axis: 'y',
onAfter: function() {
window.location.hash = id.split('#')[1];
}
});
}
return false;
}
});
$.fn.waypoint.defaults.offset = 75;
$('.section h1.page_name').waypoint(function() {
var id = this.id;
var op = $('#navigation a[href = "#' + id + '"]');
if (op.length) {
$("#navigation a").removeClass("active");
op.addClass('active');
}
});
});
I'm not a strong programmer. I've tried to edit it as best as I can and I'm just stuck. Any insight to fixing this would highly be appreciated.
Still looking for an answer, below couldn't fix the problem.
I'm not sure what the waypoints plugin was doing, but I've refactored your code and it is working for me. Note that I took out the call to .waypoints, and changed your $('body').click() handler to be a more specific handler on the navigation link elements. This handler will scroll to each element and then will perform the removal and addition of the class correctly when the scrolling is done:
$(document).ready(function()
{
function highlightNav(navElement){
$("#navigation a").removeClass('active');
navElement.addClass('active');
}
$('#navigation a').click(function(event){
var nav = $(this);
var id = nav.attr('href');
$.scrollTo(id, 1000, {
offset: { top: -75 },
axis: 'y',
onAfter: function(){
highlightNav(nav);
}
});
return false;
});
$(window).scroll(function(){
if($(this).scrollTop() == 0){
highlightNav($("#navigation a[href*='home']"));
}
});
$.fn.waypoint.defaults.offset = 75;
$('.section h1.page_name').waypoint(function() {
var id = this.id;
var op = $('#navigation a[href = "#' + id + '"]');
if (op.length) {
highlightNav(op);
}
});
// Fancybox
$("a.zoom").fancybox({
'overlayShow' : false,
'transitionIn' : 'elastic',
'transitionOut' : 'elastic'
});
$("a.outside_shade").fancybox({
'titlePosition' : 'outside',
'overlayColor' : '#000',
'overlayOpacity' : 0.9
});
$("a.inside_white").fancybox({
'titlePosition' : 'inside'
});
$("a.inside_shade").fancybox({
'titlePosition' : 'over'
});
// validation
$("form").validate();
// nivo slider
$('#slider').nivoSlider();
});
In the html I added a default active class to the first link:
<div id="navigation">
<ul>
<li>Home</li>
<li>Portfolio</li>
<li>Who Are We?</li>
<li>Our Services</li>
<li>Features</li>
<li>Keep in Touch</li>
</ul>
</div>
Also I noticed on the page you have your css defined before the reset.css is called in. That's usually bad practice you might want to make sure reset.css is always the very first css file pulled in. It doesn't appear to have affected the page much but sometimes you'll get weird results doing that.
I made a jsfiddle of the results here: http://jsfiddle.net/RNsFw/2/
the waypoints plugin isn't needed anymore I think. I didn't change the fancybox or validation stuff because i'm not sure what those are doing and it wasn't really part of your issue.
I tested it in firefox and Chrome. Let me know if you have questions :)
http://jsfiddle.net/vCgy8/9/
This removes the dependency on scrollTo, and the waypoints plugin.
$('body').click(function(event)
{
if(event.target.nodeName.toLowerCase() == 'a')
{
var op = $(event.target);
var id = op.attr('href');
if(id.indexOf('#') == 0)
{
destination = $(id).offset().top;
$("html:not(:animated),body:not(:animated)").animate({ scrollTop: destination}, 1000, function() {
var hash = id.split('#')[1];
window.location.hash = hash;
});
}
return false;
}
});
$(window).scroll(function (event){
makeActive();
});
function makeActive(){
var y = $(this).scrollTop();
if(y!==0){
$('.page_name').each(function(){
var curPos = parseInt($(this).offset().top - y);
if(curPos <= 0){
var op = $('#navigation a[href = "#'+$(this).attr('id')+'"]');
$("#navigation a").removeClass("active");
op.addClass('active');
}
});
}else{
$("#navigation a").removeClass("active");
$("#navigation a:first").addClass('active');
}
}
makeActive();
This may be completely unrelated, but I had a similar problem yesterday - where, in the callback of an event handler, jQuery operations weren't being performed in that scope but if you threw the code into something like:
setTimeout(function() {
$(selector).addClass('foo');
}, 0);
it would work - similar to how $.animate() functions (ish) if you call $(selector).stop().animate() without the queue param being false, eg:
$(selector).stop();
$(selector).animate({ foo }, { no queue:false here });
// ^ fail
$(selector).stop();
setTimeout(function() {
$(selector).animate({ foo }, { no queue:false here either });
}, 0);
// ^ success
The problem, completely unrelated to the above example though similar in behavior/functional hack, turned out to be the method of binding - in my case I had been using $.bind() - but then I refactored this to use $.delegate() ($.live() would work also) and it functioned as expected.
Again, not sure if this related, but figured I'd pass that along just in case. Unsure if it's a bug or just me not properly understanding some of the subtler parts of jQuery.
The problem is not in your js code, but in your css/page layout.
Or maybe the problem is that you are using the waypoint plugin and you might not want to for this particular page. (As you will see you also have trouble hitting the "Home" waypoint again once you have left it, because of the offset you use.)
The thing is, the waypoint plugin won't trigger until the target element you are scrolling to is in the very top of the browser window, with respect to the offset that is. "Keep in touch" will never get to the top unless your browser window is small enough that the "keep in touch" section takes up the entire browser window (minus the offset).
You can see it visualized here: