fixed: 商品详情页优化

@@ -59,16 +59,10 @@
                 let temp = val.slice();
                 const len = temp.length;
 
-                if (len > 1 && len < 4) {
+                if (len > 1) {
                     temp.unshift(temp.splice(len - 1)[0]);
                 }
 
-                if (len >= 4) {
-                    const sp = temp.splice(0, 2);
-
-                    temp.push(sp[0]);
-                    temp.push(sp[1]);
-                }
                 this.goodsList = temp;
                 this.slideCount = this.goodsList.length;
             }
@@ -91,24 +85,6 @@
                 this.activeIndex = this.calcIndex(idx);
             },
             calcIndex(realIdx){
-                const len = this.goods.length;
-
-                if (len >= 4) {
-                    if (realIdx === len -1) {
-                        realIdx = 0;
-                    } else {
-                        realIdx += 1;
-                    }
-
-                    if (realIdx < len -2) {
-                        realIdx += 2;
-                    } else if (realIdx === len -2) {
-                        realIdx = 0;
-                    } else {
-                        realIdx = 1;
-                    }
-                }
-
                 return realIdx;
             },
             show() {