.duration()

.duration( value:Number ) : *
获取或设置时间轴的持续时间。

var currentDuration = myAnimation.duration(); //获取duration
myAnimation.duration( 10 ); //设置duration，这会改变timeScale以使得时间轴适应duration

如果设置则返回self以便链式调用，留空则返回时间轴的持续时间。
.duration()适用于TimelineMaxTimelineLite

.duration()的参数

.duration() 示例

  duration: 0 单次动画持续的时间
  totalDuration: 0 全部重复动画加重复间隔的持续时间
  repeat: 0 of  重复次数
  repeatDelay: 0 每次重复动画的间隔
  time: 1 时间
  totalTime: 1 总时间
  progress: 1 单次动画进程
  totalProgress: 1 总进程

body {
    background: #f8f8f8;
    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
    font-size: 14px;
    color: #000;
    margin: 0 10px;
    padding: 0;
}
.box {
    width:50px;
    height:50px;
    border-radius:6px;
    margin-top:4px;
    display:inline-block
  }
.green{
    background-color:#6fb936;
  }
#stats{
    line-height:2;
margin-top:1em;
}

if(tm){
tm.kill()
}
var tm = new TimelineMax({repeat: 3, repeatDelay:2, onUpdate:updateStats, onRepeat:updateReps, });
tm.to('.box', 3, {x: 500});
var duration = document.getElementById("duration"),
    totalDuration = document.getElementById("totalDuration"),
    repeatCount = document.getElementById("repeatCount"),
    repeatDelay = document.getElementById("repeatDelay"),
    totalRepeatCount = document.getElementById("totalRepeatCount"),
    time = document.getElementById("time"),
    totalTime = document.getElementById("totalTime"),
    progress = document.getElementById("progress"),
    totalProgress = document.getElementById("totalProgress"),
    reps = 0;
function updateReps() {
  reps++;
  repeatCount.innerHTML = reps;
}
function updateStats() {
  time.innerHTML = tm.time().toFixed(2);
  totalTime.innerHTML = tm.totalTime().toFixed(2);
  progress.innerHTML = tm.progress().toFixed(2);
  totalProgress.innerHTML = tm.totalProgress().toFixed(2);
}
function reset() {
  reps = 0;
  duration.innerHTML = tm.duration().toFixed(2);
  totalDuration.innerHTML = tm.totalDuration().toFixed(2);
  repeatCount.innerHTML = reps;
  repeatDelay.innerHTML = tm.repeatDelay().toFixed(2);
  totalRepeatCount.innerHTML = tm.repeat();
}
reset();

.duration()返回值

.duration()的补充说明