CSS3 转换 transform3d

CSS3 transition transform3d

根据下面的代码,这是我所期望的:

...但这并没有发生,没有转换触发,它只是立即改变它的位置 x。为什么?

$(document).ready(function() {
  $(".test-panel-1").hover(function() {
    $(".test-container").removeClass("expanded");
  }, function() {
    $(".test-container").addClass("expanded");
  });
});
.test-container .test-panel-1 {
  width: 230px;
  background-color: #CC0000;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1;
}

.test-container .test-panel-2 {
  width: 179px;
  background-color: #000000;
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  -webkit-transition: -webkit-transform 2000ms ease;
  transition: transform 2000ms ease;
  -webkit-transform: translate3d(230px, 0, 0);
  transform: translate3d(230px, 0, 0);
  overflow-x: hidden;
  overflow-y: auto;
  z-index: 2;
}

.test-container.expanded .test-panel-2 {
  display: block;
  transition: transform 2000ms ease;
  -webkit-transform: translate3d(50px, 0, 0);
  transform: translate3d(50px, 0, 0);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="test-container">
  <div class="test-panel-1">

  </div>
  <div class="test-panel-2">

  </div>
</div>

不支持

for transition display 属性 你可以使用不透明度代替,你可以使用 css 代替 jquery

.test-container .test-panel-1 {
  width: 230px;
  background-color: #CC0000;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1;
}
.test-container .test-panel-2 {
  width: 179px;
  background-color: #000000;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  -webkit-transition: all 2000ms ease;
  transition: all 2000ms ease;
  -webkit-transform: translate3d(230px, 0, 0);
  transform: translate3d(230px, 0, 0);
  overflow-x: hidden;
  overflow-y: auto;
  z-index: 2;
  opacity: 0;
  visibility: hidden;
}
.test-container:hover .test-panel-2 {
  -webkit-transform: translate3d(50px, 0, 0);
  transform: translate3d(50px, 0, 0);
  opacity: 1;
  visibility: visible;
}
<div class="test-container">
  <div class="test-panel-1"></div>
  <div class="test-panel-2"></div>
</div>

CSS

Js fiddle

Jquery

Js fiddle