How do I animate a scale css property using jquery?

问题

I am trying to have a circle div with the class of "bubble" to pop when a button is clicked using jQuery. I want to get it to appear from nothing and grow to its full size, but I am having trouble getting it to work. heres my code:

HTML Show bubble ... CSS

.bubble {
    transform: scale(0);
}

Javascript

 $('button').click(function(){
     $('.bubble').animate({transform: "scale(1)"}, 5000, 'linear');
 });

回答1:

You can perform the transition using CSS and then just use Javascript as the 'switch' which adds the class to start the animation. Try this:

$('button').click(function() {
  $('.bubble').toggleClass('animate');
})

.bubble {
  transform: scale(0);
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background-color: #C00;
  transition: all 5s;
}

.bubble.animate {
  transform: scale(1);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<button>Toggle</button>
<div class='col-lg-2 col-md-2 well bubble'></div>

回答2:

Currently you cannot use animate with the transform property see here

However you can add a css transition value and modify the css itself.

var scale = 1;
setInterval(function(){
  scale = scale == 1 ? 2 : 1
  $('.circle').css('transform', 'scale('+scale+')')
}, 1000)

.circle {
  margin: 20px auto;
  background-color: blue;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  transform: scale(1);
  transition: transform 250ms ease-in-out;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="circle"></div>

回答3:

Better go with CSS3 Animations. For animation at a frequent interval you can use with browser supporting prefixes(-webkit,-moz,etc.)-

@keyframes fullScale{
    from{
        transform:scale(0);
    }
    to{
        transform:scale(1);
    }
}
.bubble:hover{
    animation: fullScale 5s;
}

Refer this link- http://www.w3schools.com/css/css3_animations.asp

Or the above solution by @Rory is also a good way to addclass on an attached event.

回答4:

You can use Velocity.js. http://velocityjs.org/ For example:

$("div").velocity({
  "opacity" : 0,
  "scale" : 0.0001
},1800)

来源：https://stackoverflow.com/questions/35429935/how-do-i-animate-a-scale-css-property-using-jquery

标签

javascript

jquery

html

css

jquery-animate