Using eating in cocos Creator

Mainly used for animation , Example ：

 cc.tween(this.stretch)
            .to(0.1,{}).call(()=>{this.arrow.scale = scale})
            .to(0.5, { x: x },{easing:"sineOut"})
            .call(() => {
                this.inOrOut = !this.inOrOut;
            })
            .start();

For the specific effect of official documents, please refer to the address :http://docs.cocos.com/creator/api/zh/classes/Easing.html#elasticout
Replace "sineOut" that will do