无限循环重新启动时，jicker会跳转的代码文本

Question

我在循环上有一个简单的滚动文本行情自动收录器。但是我在循环在jQuery中循环时会略微跳一个问题。

我不确定如何设置“超时”，以便使其一个平稳的连续周期？我曾尝试更改window.setTimeout(callback, 1000 / 10);，但它不断跳跃。我想知道这是否不是最好的方法？

// polyfill
window.requestAnimationFrame = (function() {
  return window.requestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    function(callback) {
      window.setTimeout(callback, 1000 / 10);
    };
})();

var speed = 5000;
(function ticker() {
  var tickeritemWidth = $('.ticker-item:first-child').outerWidth();
  $("#ticker").animate({
    marginLeft: -tickeritemWidth
  }, speed, 'linear', function() {
    $(this).css({
      marginLeft: 0
    }).find("li:last").after($(this).find("li:first"));
  });
  requestAnimationFrame(ticker);
})();

#ticker-wrapper {
  height: 10%;
  background: red;
  overflow: hidden;
  width: 100%;
  margin: 0;
  position: relative;
  padding: 30px 0;
}

#ticker {
  overflow: hidden;
  width: 1000%;
  margin: 0;
  background: red;
}

.ticker-item {
  display: inline-block;
  padding: 0 50px;
  font-size: 4rem;
  font-family: arial;
  text-transform: uppercase;
  color: pink;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<section id="ticker-wrapper">
  <ul id="ticker">
    <li class="ticker-item">
      #mjhonjhedolls
    </li>
    <li class="ticker-item">
      @mjhonjhedolls
    </li>
    <li class="ticker-item">
      #mjhonjhedolls
    </li>
    <li class="ticker-item">
      @mjhonjhedolls
    </li>
    <li class="ticker-item">
      #mjhonjhedolls
    </li>
  </ul>
</section>

Here is a fiddle

Answer 1

不使用setTimeout尝试以下片段和动画，

var speed = 5000;
(function ticker(){
    $('.ticker-item').each(function(index){
      var tickeritemWidth = $(this).outerWidth();
      $("#ticker").animate({marginLeft:-tickeritemWidth},speed, 'linear', function(){
        $(this).css({marginLeft:0}).find("li:last").after($(this).find("li:first"));
      });
    });    
    ticker();
})();

#ticker-wrapper {
  height: 10%;
  background: red;
  overflow: hidden;
  width: 100%;
  margin: 0;
  position: relative;
  padding: 30px 0;
}

#ticker {
  overflow: hidden;
  width: 1000%;
  margin: 0;
  background: red;
}

.ticker-item {
  display: inline-block;
  padding: 0 50px;
  font-size: 4rem;
  font-family: arial;
  text-transform: uppercase;
  color: pink;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<section id="ticker-wrapper">
  <ul id="ticker">
    <li class="ticker-item">
      #mjhonjhedolls
    </li>
    <li class="ticker-item">
      @mjhonjhedolls
    </li>
    <li class="ticker-item">
      #mjhonjhedolls
    </li>
    <li class="ticker-item">
      @mjhonjhedolls
    </li>
    <li class="ticker-item">
      #mjhonjhedolls
    </li>
  </ul>
</section>

Answer 2

这是CSS动画解决方案：

#ticker-wrapper {
  height: 5rem;
  padding: 1.2rem 0 1rem;
  background-color: red;
  margin: 0;
  position: relative;
  overflow: hidden;
  font-size: 4rem;
  font-family: arial;
  text-transform: uppercase;
}

#ticker {
  width: 48em;
  margin: 0;
  animation: marquee 8s linear infinite;
  position: absolute;
}

#ticker li {
  display: inline-block;
  margin: 0;
  padding: 0;
  text-align: center;
  color: pink;
  width: 12em;
}

@keyframes marquee {
  0% {
    left: 0;
  }
  100% {
    left: -24em;
  }
}

<section id="ticker-wrapper">
  <ul id="ticker">
    <li>
      #mjhonjhedolls
    </li><li>
      @mjhonjhedolls
    </li><li>
      #mjhonjhedolls
    </li>
  </ul>
</section>