cococreator 动态设置精灵

let that = this;
// 图片路径，注意不带后缀
let resUrl = '123';
cc.loader.loadRes(resUrl, cc.SpriteFrame, function (err, spriteFrame) {
     // 设置当前节点的spriteFrame
     this.node.getComponent(cc.Sprite).spriteFrame = spriteFrame;
});