javascript - 重新出现动画完成后元素消失

标签 javascript jquery html css css-animations

谁能告诉我为什么在第三次按下切换开关 .project-list 后重新出现的动画完成后元素消失(隐藏)的原因。我的 if/else 语句有缺陷吗？

这是动画类 slideDown(消失)和 slideUp 的 CSS。

http://www.justinaguilar.com/animations/css/animations.css 

var main = function() {

  var enabled = false;
  //$('#project-box').hide();

  $('.project-list').click(function() {
    debugger;
    if (enabled == false) {
      $('#project-box').addClass("slideUp");
      $('#project-box').removeClass("slideDown");
      enabled = true;
      $('#project-box').show();

    } else {
      $('#project-box').removeClass("slideUp");
      $('#project-box').addClass("slideDown");
      enabled = false;

      $("#project-box").on('webkitAnimationEnd', function() {
        $('#project-box').hide();
      });
    }


    //$('#project-box').toggleClass("slideUp");
  });

  //    $(window).scroll(function () {
  //        $('#project-box').each(function () {
  //            var imagePos = $(this).offset().top;
  //
  //            var topOfWindow = $(window).scrollTop();
  //            if (imagePos < topOfWindow + 400) {
  //                $(this).addClass("slideUp");
  //            }
  //        });
  //    });

  //$('#carousel').carousel('cycle');
}

$(document).ready(main);
/* Exit Animation
-------------------------------------------------- */

.slideDownEdit {
  animation-name: slideDown;
  -webkit-animation-name: slideDown;
  animation-duration: 1s;
  -webkit-animation-duration: 1s;
  animation-timing-function: ease;
  -webkit-animation-timing-function: ease;
  visibility: hidden !important;
}
@keyframes slideDown {
  0% {
    transform: translateY(-100%);
  }
  50% {
    transform: translateY(8%);
  }
  65% {
    transform: translateY(-4%);
  }
  80% {
    transform: translateY(4%);
  }
  95% {
    transform: translateY(-2%);
  }
  100% {
    transform: translateY(0%);
  }
}
@-webkit-keyframes slideDown {
  0% {
    -webkit-transform: translateY(0%);
  }
  100% {
    -webkit-transform: translateY(500%);
    visibility: hidden;
  }
}
/* Footer
-------------------------------------------------- */

.footer {
  background-color: #dddee1;
  bottom: 0;
  width: 100%;
  /* Set the fixed height of the footer here */
  height: 60px;
  border: 1px solid grey;
}
.footer p {
  font-size: 18px;
  margin-top: 10px;
  color: #777;
  position: absolute;
}
.footer a {
  color: #b55e5e;
  font-size: 16px;
  margin-top: 10px;
}
.footer .pull-right {
  color: #b55e5e;
  font-size: 16px;
  margin-top: 10px;
  right: 10%;
}
/* Featurettes
------------------------- */

.featurette-divider {
  margin: 80px 0;
  /* Space out the Bootstrap <hr> more */
}
/* Thin out the marketing headings */

.featurette-heading {
  font-weight: 300;
  line-height: 1;
  letter-spacing: -1px;
  margin-top: 120px;
  font-size: 50px;
  display: inline-block;
}
/* Project Box 
------------------------- */

#project-box {
  text-align: center;
  cursor: pointer;
  border: 3px solid #636366;
  cursor: pointer;
  width: 75%;
  margin: auto;
  visibility: hidden;
}
#project-divider.featurette-divider {
  margin: 10px 0;
}
#project-box a {
  font-size: 30px;
  margin-left: 300px;
  margin-right: 100px;
  color: darkred;
  display: block;
  margin: auto;
}
#project-box p {
  font-size: 20px;
  color: dimgrey;
}
.project-list {
  cursor: pointer;
  color: darkred;
}
.slider {
  overflow-y: scroll;
  max-height: 500px;
  /* approximate max height */
  transition-property: all;
  transition-duration: .5s;
  transition-timing-function: cubic-bezier(0, 1, 0.5, 1);
}
.slider.closed {
  max-height: 0;
}
.slideUp {
  animation-name: slideUp;
  -webkit-animation-name: slideUp;
  animation-duration: 1s;
  -webkit-animation-duration: 1s;
  animation-timing-function: ease;
  -webkit-animation-timing-function: ease;
  visibility: visible !important;
}
@keyframes slideUp {
  0% {
    transform: translateY(100%);
  }
  50% {
    transform: translateY(-8%);
  }
  65% {
    transform: translateY(4%);
  }
  80% {
    transform: translateY(-4%);
  }
  95% {
    transform: translateY(2%);
  }
  100% {
    transform: translateY(0%);
  }
}
@-webkit-keyframes slideUp {
  0% {
    -webkit-transform: translateY(100%);
  }
  50% {
    -webkit-transform: translateY(-8%);
  }
  65% {
    -webkit-transform: translateY(4%);
  }
  80% {
    -webkit-transform: translateY(-4%);
  }
  95% {
    -webkit-transform: translateY(2%);
  }
  100% {
    -webkit-transform: translateY(0%);
  }
}
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Murray Studio</title>
  <meta name="description" content="Main Page for Murray Studio">
  <link rel="icon" href="http://s3.amazonaws.com/codecademy-content/courses/ltp2/img/uber/close.png">

  <!-- Bootstrap -->
  <link href="css/bootstrap.min.css" rel="stylesheet">
  <link rel="stylesheet" href="css/animations.css">
  <link rel="stylesheet" href="main.css">
</head>

<body>



  <!-- Wrap the rest of the page in another container to center all the content. -->

  <div class="container marketing">

    <!-- START THE FEATURETTES -->

    <hr class="featurette-divider">

    <div class="row featurette">
      <div class="first-featurette">
        <div class="col-md-7">
          <a class="featurette-heading" href="#">Projects.</a>
          <p class="lead">Donec ullamcorper nulla non metus auctor fringilla. Vestibulum id ligula porta felis euismod semper. Praesent commodo cursus magna, vel scelerisque nisl consectetur. Fusce dapibus, tellus ac cursus commodo.</p>
          <p class="project-list">See Projects.</p>
          <div id="object" class="slideUp">
            <div id="object" class="slideDownEdit">
              <div id="project-box">
                <a>Embraer adds third Legacy 500 prototype to flight test campaign</a>
                <hr class="featurette-divider" id="project-divider">
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>

              </div>
            </div>
          </div>
        </div>
        <div class="col-md-5">
          <img class="featurette-image img-responsive center-block" src="http://a1.dspnimg.com/data/l/423341110329_Qy737Vid_l.jpg" alt="Generic placeholder image">
        </div>
      </div>
    </div>

    <hr class="featurette-divider">
  </div>

  <!-- /END THE FEATURETTES -->

  <!-- FOOTER -->
  <footer class="footer">
    <div class="container">
      <p class="pull-right"><a href="#">Back to top</a>
      </p>
      <p>&copy; 2014 Company, Inc. &middot; <a href="#">Privacy</a> &middot; <a href="#">Terms</a>
      </p>
    </div>
  </footer>

  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
  <script src="js/bootstrap.min.js"></script>
  <script src="main.js"></script>
</body>


</html>

最佳答案

您的问题是因为在 webkitAnimationEnd 事件处理程序中您没有检查状态。下面的代码是一个事件处理程序，这意味着每次 #project-box 上的动画结束时，该框都会被隐藏。这仅发生第 3 次，因为您仅在第 2 次点击时附加事件处理程序。

  $("#project-box").on('webkitAnimationEnd', function() {
      $('#project-box').hide();
  });

您可以通过检查事件处理程序中的状态来修复它，如下面的代码所示:

var main = function() {

  var enabled = false;
  //$('#project-box').hide();

  $('.project-list').click(function() {
    //debugger;
    if (enabled == false) {
      $('#project-box').addClass("slideUp");
      $('#project-box').removeClass("slideDown");
      enabled = true;
      $('#project-box').show();

    } else {
      $('#project-box').removeClass("slideUp");
      $('#project-box').addClass("slideDown");
      enabled = false;
      $("#project-box").on('webkitAnimationEnd', function() {
        if (enabled == false)
          $('#project-box').hide();
      });
    }


    //$('#project-box').toggleClass("slideUp");
  });

  //    $(window).scroll(function () {
  //        $('#project-box').each(function () {
  //            var imagePos = $(this).offset().top;
  //
  //            var topOfWindow = $(window).scrollTop();
  //            if (imagePos < topOfWindow + 400) {
  //                $(this).addClass("slideUp");
  //            }
  //        });
  //    });

  //$('#carousel').carousel('cycle');
}

$(document).ready(main);
/* Exit Animation
-------------------------------------------------- */

.slideDownEdit {
  animation-name: slideDown;
  -webkit-animation-name: slideDown;
  animation-duration: 1s;
  -webkit-animation-duration: 1s;
  animation-timing-function: ease;
  -webkit-animation-timing-function: ease;
  visibility: hidden !important;
}
@keyframes slideDown {
  0% {
    transform: translateY(-100%);
  }
  50% {
    transform: translateY(8%);
  }
  65% {
    transform: translateY(-4%);
  }
  80% {
    transform: translateY(4%);
  }
  95% {
    transform: translateY(-2%);
  }
  100% {
    transform: translateY(0%);
  }
}
@-webkit-keyframes slideDown {
  0% {
    -webkit-transform: translateY(0%);
  }
  100% {
    -webkit-transform: translateY(500%);
    visibility: hidden;
  }
}
/* Footer
-------------------------------------------------- */

.footer {
  background-color: #dddee1;
  bottom: 0;
  width: 100%;
  /* Set the fixed height of the footer here */
  height: 60px;
  border: 1px solid grey;
}
.footer p {
  font-size: 18px;
  margin-top: 10px;
  color: #777;
  position: absolute;
}
.footer a {
  color: #b55e5e;
  font-size: 16px;
  margin-top: 10px;
}
.footer .pull-right {
  color: #b55e5e;
  font-size: 16px;
  margin-top: 10px;
  right: 10%;
}
/* Featurettes
------------------------- */

.featurette-divider {
  margin: 80px 0;
  /* Space out the Bootstrap <hr> more */
}
/* Thin out the marketing headings */

.featurette-heading {
  font-weight: 300;
  line-height: 1;
  letter-spacing: -1px;
  margin-top: 120px;
  font-size: 50px;
  display: inline-block;
}
/* Project Box 
------------------------- */

#project-box {
  text-align: center;
  cursor: pointer;
  border: 3px solid #636366;
  cursor: pointer;
  width: 75%;
  margin: auto;
  visibility: hidden;
}
#project-divider.featurette-divider {
  margin: 10px 0;
}
#project-box a {
  font-size: 30px;
  margin-left: 300px;
  margin-right: 100px;
  color: darkred;
  display: block;
  margin: auto;
}
#project-box p {
  font-size: 20px;
  color: dimgrey;
}
.project-list {
  cursor: pointer;
  color: darkred;
}
.slider {
  overflow-y: scroll;
  max-height: 500px;
  /* approximate max height */
  transition-property: all;
  transition-duration: .5s;
  transition-timing-function: cubic-bezier(0, 1, 0.5, 1);
}
.slider.closed {
  max-height: 0;
}
.slideUp {
  animation-name: slideUp;
  -webkit-animation-name: slideUp;
  animation-duration: 1s;
  -webkit-animation-duration: 1s;
  animation-timing-function: ease;
  -webkit-animation-timing-function: ease;
  visibility: visible !important;
}
@keyframes slideUp {
  0% {
    transform: translateY(100%);
  }
  50% {
    transform: translateY(-8%);
  }
  65% {
    transform: translateY(4%);
  }
  80% {
    transform: translateY(-4%);
  }
  95% {
    transform: translateY(2%);
  }
  100% {
    transform: translateY(0%);
  }
}
@-webkit-keyframes slideUp {
  0% {
    -webkit-transform: translateY(100%);
  }
  50% {
    -webkit-transform: translateY(-8%);
  }
  65% {
    -webkit-transform: translateY(4%);
  }
  80% {
    -webkit-transform: translateY(-4%);
  }
  95% {
    -webkit-transform: translateY(2%);
  }
  100% {
    -webkit-transform: translateY(0%);
  }
}
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Murray Studio</title>
  <meta name="description" content="Main Page for Murray Studio">
  <link rel="icon" href="http://s3.amazonaws.com/codecademy-content/courses/ltp2/img/uber/close.png">

  <!-- Bootstrap -->
  <link href="css/bootstrap.min.css" rel="stylesheet">
  <link rel="stylesheet" href="css/animations.css">
  <link rel="stylesheet" href="main.css">
</head>

<body>



  <!-- Wrap the rest of the page in another container to center all the content. -->

  <div class="container marketing">

    <!-- START THE FEATURETTES -->

    <hr class="featurette-divider">

    <div class="row featurette">
      <div class="first-featurette">
        <div class="col-md-7">
          <a class="featurette-heading" href="#">Projects.</a>
          <p class="lead">Donec ullamcorper nulla non metus auctor fringilla. Vestibulum id ligula porta felis euismod semper. Praesent commodo cursus magna, vel scelerisque nisl consectetur. Fusce dapibus, tellus ac cursus commodo.</p>
          <p class="project-list">See Projects.</p>
          <div id="object" class="slideUp">
            <div id="object" class="slideDownEdit">
              <div id="project-box">
                <a>Embraer adds third Legacy 500 prototype to flight test campaign</a>
                <hr class="featurette-divider" id="project-divider">
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>
                <p>The third Legacy 500 has joined Embraer's flight test programme aimed at delivering the midsize business jet in 2014. The airtcraft, serial number 003...</p>

              </div>
            </div>
          </div>
        </div>
        <div class="col-md-5">
          <img class="featurette-image img-responsive center-block" src="http://a1.dspnimg.com/data/l/423341110329_Qy737Vid_l.jpg" alt="Generic placeholder image">
        </div>
      </div>
    </div>

    <hr class="featurette-divider">
  </div>

  <!-- /END THE FEATURETTES -->

  <!-- FOOTER -->
  <footer class="footer">
    <div class="container">
      <p class="pull-right"><a href="#">Back to top</a>
      </p>
      <p>&copy; 2014 Company, Inc. &middot; <a href="#">Privacy</a> &middot; <a href="#">Terms</a>
      </p>
    </div>
  </footer>

  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
  <script src="js/bootstrap.min.js"></script>
  <script src="main.js"></script>
</body>


</html>

或者，您可以 detach the event handler在执行后的 else 循环中，但这意味着我们在每个循环中执行附加/分离循环，我认为这不是很好。

请注意，发布此答案只是为了解释问题的根源。我假设您将拥有更多(或不同的)东西，这需要使用额外的 .show() 和 .hide()。

如果您的要求只是在切换开关时显示/隐藏元素，仅此而已，那么 humble.rumble.6x3 的答案中提供的方法是最简单的。

关于javascript - 重新出现动画完成后元素消失，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30182173/

上一篇：javascript - 有条件地包含浏览器脚本

下一篇：javascript - 无法在 d3 中添加过渡

相关文章：

javascript - 动态添加的 Outline Jquery Chosen 选择框

iphone - HTML5 视频在 iPad 上不显示

javascript - 如何使用 Canvas 从视频中解析图像数据而不将 Canvas 附加到页面？

javascript - 如何使用字符串访问嵌套对象值以便我可以编辑？

javascript - Blur() 和 keypress() 无法在 JQuery 上使用 Replacewith() 工作

php - 如何使用多个输入通过一次搜索来搜索多个列

html - 替换 HTML 字符串中的字符 - 标签除外

javascript - 无法有意发出 http 请求

javascript - 非常具体的错误 - Tic Tac Toe 测试仪

jquery - ui-icon 不显示使用 jquery ui css

©2024 IT工具网  联系我们