**如何点击左右切换呢请指教
touchEndNext(index) {
console.log(index)
this.slideing = true;
this.listArr[index].x = this.listArr[index].x * 3;
this.listArr[index].y = this.listArr[index].y * 3;
var a = setTimeout(() => {
this.$set(this.listArr[index], "show", false);
this.$nextTick(() => {
this.currentIndex++;
if (index + 3 < this.listArr.length) {
this.$set(this.listArr[index + 3], "opacity", 1);
}
this.slideing = false
a;
});
``` **