Develop Reference

Drop Down text won't come back up and won't recognize other instances

I used OnClick drop down text with JavaScript and HTML code to make the dropdown hidden div project.
But the problems are:
1 - It won't open divs separatelly, all of the "projects" are open at once;
2 - I won't come back up once I click it again.
I made another line of code to make it go up:
$(function() {
$(".project").on('click', function() {
$(this).parent().find('.details').slideDown();
});
$(".project").on('click', function() {
$(this).parent().find('.details').slideUp();
});
});
$(function() {
$(".project2").on('click', function() {
$(this).parent().find('.details').slideDown();
});
$(".project2").on('click', function() {
$(this).parent().find('.details').slideUp();
});
});
And so on... and it goes up as soon as I click it only once, like an animation. It won't stay down and THEN on the next click it goes back up. AND it still gets both down instead of each one separately.

You shouldn't use document.ready to often if isn't needed.
// Shorthand for $( document ).ready()
$(function() {
});
If you bind two events to an element, .. it will be executed if you don't stopPropergation or making "cases".
So you can check the visibility and decide what to do:
$( function () {
$("[class^='project']").on( 'click', function () {
var $details = $( this ).parent().find( '.details' );
if ($details.is(':visible'))
$( this ).parent().find( '.details' ).slideUp();
else
$( this ).parent().find( '.details' ).slideDown();
});
} );
https://jsfiddle.net/3738Lnmf/
edit:
slideToggle is more elegant :) #Diego López
$( function () {
$("[class^='project']").on( 'click', function () {
$(this).parent().find('.details').slideToggle();
});
} );
https://jsfiddle.net/3738Lnmf/1/

Use .slideToggle() if you want to toggle between show and hide the div elements
$(function() {
$(".project").on('click', function() {
$(this).parent().find('.details').slideToggle();
});
$(".project2").on('click', function() {
$(this).parent().find('.details').slideToggle();
});
});

Css function doesn't work

I am writing this code, first toggle function is working but second toggle isn't. Why is that?
<script type="text/javascript">
$(document).ready(function(){
$( ".navicon" ).click(function() {
$( "#menu" ).slideToggle( "medium", function() {
// Animation complete.
});
});
});
$(document).ready(function(){
$('.navicon').toggle(function () {
$("body").css({"overflow": "hidden !important"});
$("#mobile_menu").css({"width": "100% !important"});
});
});
</script>

The toggle() method was deprecated, you need to use an alternative, such as a flag to depict the 'toggled' state.
A loose example:
$('.myclass').click(function() {
if ($(this).hasClass('toggle')) {
doThis;
$(this).removeClass('toggle');
} else {
doThis;
$(this).addClass('toggle');
}
});
And encase all of your functions with $(document).ready() rather than doing it for each individual one.

JQuery.hover() not working when hovering over tile

I'm trying to add some functionality when hovering over a 2048 tile. Each tile of value n has a class 'tile-n'.
For the basic 'tile-2' tile, I have the hover functionality:
<script>
$( ".tile-2" ).hover(
function(){
alert("in!");
}, function() {
alert("out!");
}
);
</script>
But nothing is happening and I don't believe the hover is being registered and I'm not sure why.
My implementation can be seen at: http://kpscript.github.io/PCN-Embark-2048/
The 'tile-2' div can be seen at: html.body.container.game-container.tile-container.tile-2.
Of course, I plan to do more non-trivial things with hover, but for now I can't even get the alert to show.

Try like this, It works for me...
$("body").on('mouseenter', '.tile-2', function () {
alert("in!");
}).on('mouseleave', '.tile-2', function () {
alert("out!");
});

I think you load html using ajax, this should work
<script>
$( "body" ).on('hover','.tile-2',
function(){
alert("in!");
}, function() {
alert("out!");
}
);
;)

You are trying to bind the event to the element before the element is rendered on the page. Wait until its loaded.
$(document).ready({
$( ".tile-2" ).hover(
function(){
alert("in!");
}, function() {
alert("out!");
}
);
});

Disable click on an element during animation

I want to prevent clicking on an element, while it performs some animations and then enable it later. I have tried to use unbind and then bind, but clicking remains permanently disabled.
Is there any other way to do it?
$("something").on("click", function() {
$("selected").unbind("click");
$("selected").animate({...}, function() {
$("selected").unbind("click");
});
basically, i don't want someone to click on the selected div while the animation is in progress, as clicking on it will start another set of animations which i don't want to start in between.

Try this, using a flag variable to store the info if the animation is happening:
var animating = false;
$("something").on("click", function () {
animating = true;
$("selected").animate({...
}, 1000, function () {
animating = false;
});
});
$("selected").click(function(){
if (animating) return false;
});

Use on and off this way you can "bind" the function foo to a click event on a particular element, switch it off and on again, as many times as you like. Have fun ;-)
DEMO: http://jsfiddle.net/4yBbb/2/
var foo = function() {
// Code to handle some kind of event
};
// ... Now foo will be called when paragraphs are clicked ...
$( "p" ).on( "click", foo );
// ... Foo will no longer be called.
$( "p" ).off( "click", foo );
edit: updated answer, my example used delegation and this was not necessary.
applied to your example it would look like this:
$("something").on("click", function() {
$("selected").off( "click", foo );
$("selected").animate({...}, function() {
$("selected").on( "click", foo );
});

clicking remains permanently disabled.
Because when never bind the "click" again to $("something"). Try:
$("something").on("click", function animate() {
var _this = $(this);
_this.off("click");
$("selected").animate({...}, function() {
_this.on("click",animate);
});
Here I use named function to make it easy to refer to the function again.

How about adding a check in your click function to perform the animation only when the clicked element is not animating?
$("something").on("click", function() {
$("selected").animate({...});
});
$("selected").on("click",function(){
if(!$(this).is("selected:animated")){
//Start other animation
}
});
Demo fiddle

Use .on() & .off() event of jquery. here is the example Jquery API
you need to do somthing like as follows:
function flash() {
// do your stuff here
}
$("something").on("click", function() {
$( "body" ).off( "click", "Your Div Selector", flash );
});
$("something").on("click", function() {
$( "body" ).on( "click", "Your Div Selector", flash );
});

Jquery on hover not functioning

I'm changing my codes to be compatible with jQuery 1.8 and I'm stuck with this hover which doesn't work. When I used then same thing with a click it worked. Here is my code, can anyone tell me where I'm going wrong?
$(document).on('hover', '.top-level', function (event) {
$(this).find('.actionfcnt').show();
$(this).find('.dropfcnt').show();
}, function () {
$(this).find('.dropfcnt').hide('blind', function () {
$('.actionfcnt').hide();
});
});

Deprecated as of jQuery 1.8: The name "hover" used as a shorthand for the string "mouseenter mouseleave". It attaches a single event handler for those two events, and the handler must examine event.type to determine whether the event is mouseenter or mouseleave. Do not confuse the "hover" pseudo-event-name with the .hover() method, which accepts one or two functions.
Source: http://api.jquery.com/on/#additional-notes
That pretty much says it all, you cant use "hover" for that:
$(document).on('mouseenter','.top-level', function (event) {
$( this ).find('.actionfcnt').show();
$( this ).find('.dropfcnt').show();
}).on('mouseleave','.top-level', function(){
$( this ).find('.dropfcnt').hide('blind', function(){
$('.actionfcnt').hide();
});
});

there is no "hover" event.
there is .hover() function that takes 2 callbacks (as in your example).

Try:
$(".top-level").on({
mouseenter: function (event) {
$( this ).find('.actionfcnt').show();
$( this ).find('.dropfcnt').show();
},
mouseleave: function (event) {
$( this ).find('.dropfcnt').hide('blind', function(){
$('.actionfcnt').hide();
});
}
});
OR
$(".top_level").on("hover", function(event) {
if(event.type == "mouseenter") {
$( this ).find('.actionfcnt').show();
$( this ).find('.dropfcnt').show();
}
else if (event.type == "mouseleave") {
$( this ).find('.dropfcnt').hide('blind', function(){
$('.actionfcnt').hide();
});
}
});

.on function has only 3 parameters : http://api.jquery.com/on/
If you don't need your handlers be bound to dynamically added elements as well, then you may use the good old hover function with 2 event handlers.
$('.top-level').hover(function (event) {
$(this).find('.actionfcnt').show();
$(this).find('.dropfcnt').show();
}, function (event) {
$(this).find('.dropfcnt').hide('blind', function(){
$('.actionfcnt').hide();
});
});​
By the way, $(selector).hover(handlerIn, handlerOut) is shorthand for $(selector).mouseenter(handlerIn).mouseleave(handlerOut);.
If you need to, then use on for mouseenter and mouseleave events:
$(document).on('mouseenter', '.top-level', function (event) {
$(this).find('.actionfcnt').show();
$(this).find('.dropfcnt').show();
}).on('mouseleave', '.top-level', function (event) {
$(this).find('.dropfcnt').hide('blind', function(){
$('.actionfcnt').hide();
});
});​

Try
$('.top-level').hover(function (event) {
$( this ).find('.actionfcnt').show();
$( this ).find('.dropfcnt').show();
}, function(){
$( this ).find('.dropfcnt').hide('blind', function(){
$('.actionfcnt').hide();
});
});