video标签Show里this.setData修改video组件的initial-time不生效?
var newdate = newDate().getTime()
var olddata = that.data.startButtonTime
var olddatas = olddata.replace(/-/g, ‘/’);
var olddate = newDate(olddatas).getTime()
var time = (newdate - olddate) / 1000
that.setData({
duration: time
})