JQuery Animate - javascript

Really easy, I'm sure...
I have a div which is the full screen and I want it to slide down from the top to the bottom.
I have this:
$('#full-screen').animate({
"bottom":0,
height: 'toggle'
}, 1000, function() {
// Animation complete.
});
But this is the wrong way round as the bottom moves up; how do I get the bottom to stay where is is and the top to slide down to meet it?
Thanks

Your exact code works fine when you have absolute positioning on the element.
http://jsfiddle.net/hhEJD/
CSS
body {
padding: 0;
margin: 0;
}
#full-screen {
background: orange;
color: white;
width: 100%;
height: 100%;
position: absolute; // position absolute, and your code works
clip:auto;
overflow:hidden;
}​
HTML
<div id="full-screen"></div>​
Your code
$('#full-screen').animate({
"bottom":0,
height: 'toggle'
}, 1000, function() {
// Animation complete.
});
You're setting the bottom style to 0 in your animate. This has no effect if you don't use absolute positioning on your element.

You need to also animate the 'top' property of the div as well as disabling the animation queue so both animations happen at the same time.
$('#slide2').animate(
{height: '0px'},
{
duration: 1000,
queue: false, //Disable the queue so both events happen at the same time.
complete: function()
{
// animation complete
}
}
).animate( //also animate the top property
{top: '500px'},
{duration: 1000}
);​
Try it out over at jsFiddle.

You can use marginTop for it:
var h=$('#full-screen').height();
$('#full-screen')
.animate(
{marginTop: h, height: 'toggle'},
1000,
function() {
// Animation complete.
}
)
see at: http://jsbin.com/esotu3

Related

Why does anime.js skip over certain delays when animating CSS properties?

I'm experimenting with anime.js to move around elements and animate CSS properties. I have found that when animating certain properties, such as left or top, anime.js overwrites or skips over to the last animation of this property.
For example, here is some code that I've been working on where I've seen this happening:
<style>
div {
position: absolute;
width: 50px;
height: 50px;
background-color: black;
}
#square {
left: 100px;
top: 50px;
}
</style>
<div id="square"></div>
<script>
anime({
targets: '#square',
left: 300,
delay: 2000
});
anime({
targets: '#square',
left: 700,
delay: 4000
});
</script>
Instead of moving the square to the 300px position at 2 seconds, and then 700px position at 4 seconds, all I see is the square being moved to 700px after 4 seconds. It seems like the first 300px bit is entirely ignored. Why does this occur, and is there any workaround to this? Or should I structure the animation code differently to make sure this doesn't happen? Any help would be greatly appreciated.
After some experimentation, I found that the solution is somewhere in the anime.js documentation. I needed to use keyframes like so:
anime({
targets: '#square',
left: [
{value: 300, delay: 2000},
{value: 700, delay: 2000}
]
});
This ensures that one animation is not ignored, allowing the shape to be moved first to the 300px position and then to the 700px position, at 2s and 4s respectively.

Check a div postion when -100% left

im trying to check a div position so when it comes to -100% left it returns to right 100%.
Im sutck in the part of checkin its position. Im using the console.log to check if it works, ive tried console.log(back1X.left) to.
$(document).ready(function(){
setInterval(function() {
var back1X = $('.back1').position();
},100);
$('.back1').animate({'left':'-100%'},50500);
console.log(back1X);
});
You can use jQuery .animate()'s complete callback to call a function when the animation ends:
$(document).ready(function() {
(function loop() {
$('.back1').css('left', '100%').animate({
'left': '-100%'
}, 2000, "linear", loop);
})();
});
.back1 {
position: absolute;
top: 0;
left: 100%;
padding: 1em;
background: red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="back1"></div>

Flying balloon with a parabolic animation

I've made a simple animation of a balloon moving from left to right side of the screen, but I want to make it as a parabolic movement instead of linear animation. Also I want to hide it from left site instead of starting on left:0;
Here's my actual code
$(document).ready(function() {
function loop() {
$('#promo').css({
left: 0
});
$('#promo').animate({
left: '+=100%',
}, 10000, 'linear', function() {
loop();
});
}
loop();
});
#promo {
position: absolute;
z-index: 500;
left: 0px;
top: 10px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id="promo">
<img border="0" alt="promo balloon" src="http://www.placehold.it/50" />
</div>
Adjust the left property of the balloon to -50px, so it's not visible at the start of the animation.
Also, to stop the scrollbars appearing, give the container of the balloon overflow: hidden. You could then use jQuery/JavaScript to adjust the width of the container to fit the browser's viewport on document ready, and window resize.
CSS
.balloon-container {
position: relative;
height: 200px; // Set a height of your container here, or use jQuery/JavaScript
}
.balloon {
position: absolute;
left: -50px;
}
jQuery
$(document).ready(function() {
function sizeContainer() {
$('.container').css('width', window.innerWidth);
}
function loop() {
$('.balloon').css('left', '-50px');
$('#promo').animate({
left: '+=100%',
}, 10000, 'linear', function() {
loop();
});
}
// Run initial functions.
sizeContainer();
loop();
$(window).resize(function() {
// Re-run functions on window resize.
sizeContainer();
});
});

Animate Element to right edge of the window using Jquery?

I am trying to animate a div to the right of the window using Jquery. I am also using Jquery UI to change the color of the div. I am animating the div all over the window as well. I am just experimenting with jquery animations though, nothing critical. Any ways this is the code I have so far:
HTML:
<div id="box1"></div>
<button type="button" id="btn"> Click Me! </button>
CSS:
#box1{
width: 200px;
height: 200px;
background-color: red;
border: 0px solid black;
border-radius: 0px;
position: relative;
}
#btn{
position: fixed;
top: 600px;
display: table-cell;
font-size: 30px;
}
JQuery:
var allow = true;
var animating = false;
$("#btn").click(function(){
if(allow == true){
if(!animating){
animating = true;
$("#btn").hide();
$("#box1").animate({backgroundColor: "yellow", borderWidth: "5px"}, 1000, "linear").animate({left: "500px"}, 1000).animate({top: "500px"}, 1000);
$("#box1").animate({left: "1000px", top: "0px"}, 1000).animate({left: "500px"}, 1000).animate({top: "500px"}, 1000, function(){
allow = false;
animating = false;
$("#btn").show().text("Click Me Aagain!");
});
}
} else {
if(!animating){
$("#btn").hide();
animating = true;
$("#box1").animate({top: 0}, 1000).animate({left: 0}, 1500).animate({backgroundColor: "red", borderRadius: 0, borderWidth: 0, width: "100px", height: "100px"}, 1000, function(){
$("#btn").show().text("Start Over!");
});
animating = false;
allow = true;
}
}
});
The first variable at the top is to toggle between two different animation sequences. The next is to ensure that the animations are not triggered twice by mistake. The element I am trying to move all the way to the right is #box1 and I want it to do so at the end of the first sequence!
Thanks for your help!
There are 2 options you can do to get the box to animate to the right edge of the area.
1) You could set the css "left: auto", and animate the css "right:0". To do this you would need to take some extra steps. You would need to set css "position: absolute" to the box and would need to wrap the box in a div that has the css "position: relative" with a width of 100%. That way, the box knows where the right edge because its most immediate parent that has css "position:relative" is setting the boundary. Doing this option would require a little fine tuning because switching between animating the left position and the right position will cause some jumping.
2) This option you could continue animating the left position, but to get it to animate to the right, you would need jquery to calculate how wide the page is, and subtract the with width of the box. It would look like this:
left: ($(document).outerWidth() - $('#box1').outerWidth())

Simple JQuery Fade In/Out

So what I'm trying to do is getting a div with an animation to show up only when I hover a button. I want that div to be invisible until the page hovers it, and I want it to go back being invisible once the mouse is no longer hovering the button.
Also, I want to do this with JQuery since I've kept far away from it for too long.
JQuery Code:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function(){
$('#about').hover(function(){
$('#about_hover').stop(true, true).animate({
width: '150px',
opacity: '0.8',
}, 300);
}, function(){
$('#about_hover').animate({
width: '0px',
opacity: '0',
}, 300);
});
});
</script>
HTML Code:
<div id="about_hover">
<img src="images/hover.gif">
</div>
<img src="images/menu/about.png">
<br>
CSS:
#about_hover {
text-align: right;
width: 150px;
float: left;
margin: 5px 0px 0px 100px;
overflow: hidden;
}
I'm getting a few problems though. First of all, the image inside the div loads up with opacity at 100% and only goes to 80% after I hover it for the first time. After that, it fades away like it's supposed to but it doesn't show up again when I hover the button.
Any thoughts?
Thanks
Thanks!
How about using fadeTo or fadeToogle ?
Here's a small snippet made using fadeTo: http://jsbin.com/agojux ?
you can have a look at it's source here
Here is your code, but a little bit modified:
JS:
$('#about_hover').width(0);
$('#about').hover(function(){
$('#about_hover').stop(true, true).animate({
width: '150px',
opacity: '0.8',
}, 300);
}, function(){
$('#about_hover').animate({
width: '0px',
opacity: '0',
}, 300);
});​
HTML:
<img src="http://www.placekitten.com/20/20/"><br>
<div id="about_hover"><img src="http://www.placekitten.com/80/80/"></div>
Honestly, it's probably best to use jQuery's on in this situation.. Your code would look something like this:
$("selector").on({
mouseenter: function () {
//fade in goes here
},
mouseleave: function () {
//fade out goes here
}
});
Hover is cool and all, but things can get messy with hover toggling. on makes this a snap. Also for your opacity's, I would probably use a fadeTo instead.
Here is the on documentation.

Categories