Why are not my balloons flying properly? Css animation translate

Question

I am trying to do the following with CSS translate:

When a button is clicked, balloons appear and fly away. When they finished flying, they disappear and return to the starting position (so that when the next time a button is clicked the same behavior happens).

Up till now I got the following (balloon is only flying up and does not appear / disappear).

HTML

<div>
    <img class="object" src="http://pngimg.com/upload/balloon_PNG580.png" />
</div>
<br><br><button id="button">Fly!!!</button>

CSS

div{
    height: 300px;
    position: relative;
}
.object {
    width: 60px;
    position: absolute;
    bottom: 0;
    -webkit-transition: all 1s ease-in-out;
    -moz-transition:    all 1s ease-in-out;
    -o-transition:      all 1s ease-in-out;
}
.move-up{
    transform:         translate(0,-150px);
    -webkit-transform: translate(0,-150px);
    -o-transform:      translate(0,-150px); 
    -moz-transform:    translate(0,-150px);
}

JS

$('#button').click(function(){
    $('.object').addClass('move-up');
});

The problem is that when I try it to appear with adding starting display : none to object and on click add $('.object').show() my animation does not start at all. How to may my balloon fly?

Answer 1

You can achieve this effect using CSS3 animations. Please refer inline comments for more details on each item.

CSS:

.object {
    width: 60px;
    position: absolute;
    bottom: 0;
    opacity: 0; /* make the balloon invisible on load and once animation is complete */
}

.move-up{
    -webkit-animation: balloon 1s linear; /* the animation to move up */
    -moz-animation: balloon 1s linear;
    animation: balloon 1s linear;
}

@keyframes balloon { /* included only unprefixed version to keep answer short, demo has the prefixed versions also */
    5% {
        transform: translate(0, 0); /* keep at original position */
        opacity: 1; /* make opacity as 1 after a short time for balloon to appear */
    }
    50% {
        transform: translate(0, -150px); /* move up */
        opacity: 1; /* retain the opacity */
    }
    55%, 100% {
        transform: translate(0, -150px); /* retain translated position till end */
        opacity: 0; /* hide the ballons and make it hidden for the rest of the duration */
    }
}

jQuery:

$('#button').click(function(){
    $('.object').addClass('move-up'); // adding the move up animation class to make it move
    $('.object.move-up').on('animationend webkitAnimationEnd MSAnimationEnd oAnimationEnd',function(){
        $('.object').removeClass('move-up'); // removing the animation class on animation end to make it come back to original state
    });
});

Demo

Answer 2

I made a codepen using the translate property inside an animation. (My container has height 700px) .

@keyframes moveballoon { 
  0% {  transform: translate(0px, 700px);}
  100% { transform: translate(0px, -1200px);} 
}

.animationballoon { 
  animation: moveballoon 2s infinite linear forwards;
}

With Jquery you could have something like:

$('#button').click(function(){
$('.object').addClass('animationballoon');
});

Hope it could help!

DEMO HERE