alternate

定义定时器方向是否在每次迭代时交替，当 loop 设置为 true 或大于 1 时。

接受

布尔值

默认值

false

要全局更改默认值，更新 engine.defaults 对象。

import { engine } from 'animejs';
engine.defaults.alternate = true;

alternate 代码示例

import { animate } from 'animejs';

const [ $loops ] = utils.$('.loops');
const [ $time ] = utils.$('.time');

let loops = 0;

createTimer({
  loop: true,
  duration: 1000,
  alternate: true,
  onLoop: () => $loops.innerHTML = ++loops,
  onUpdate: self => $time.innerHTML = self.iterationCurrentTime
});

<div class="large centered row">
  <div class="col">
    <pre class="large log row">
      <span class="label">loops count</span>
      <span class="loops value">0</span>
    </pre>
  </div>
  <div class="col">
    <pre class="large log row">
      <span class="label">iteration time</span>
      <span class="time value lcd">0</span>
    </pre>
  </div>
</div>

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loopDelay
reversed