loadAnimation: function () {

var that = this;

if (that.data.animationnum < 45) {

that.setData({

animationnum: that.data.animationnum + 1,

});

setTimeout(that.loadAnimation, 42);

} else {

if (that.data.itemlist.length == 0) {

that.setData({

animationnum: 0,

});

setTimeout(that.loadAnimation, 42);//这行注释就不会闪退了   但是这行代码很需要

}

}

},