修改 js报错

@@ -286,14 +286,19 @@
                     this.selection.color = selection.color = this.colors[0];
                     this.selection.color = selection.color = this.colors[0];
                 }
                 }
 
 
-                this.sizes = colorSizes[selection.color.value];
                 this.colorSizes = colorSizes;
                 this.colorSizes = colorSizes;
                 this.thumbnails = thumbnails;
                 this.thumbnails = thumbnails;
 
 
                 // 选择默认值
                 // 选择默认值
+                if (selection.color) {
+                    this.sizes = colorSizes[selection.color.value];
                     this.$emit('feature:color.select', selection.color);
                     this.$emit('feature:color.select', selection.color);
+                }
+
+                if (selection.size) {
                     this.$emit('feature:size.select', selection.size);
                     this.$emit('feature:size.select', selection.size);
                 }
                 }
+            }
         },
         },
         components: {
         components: {
             featureOptions: require('./feature-options.vue')
             featureOptions: require('./feature-options.vue')