半屏弹窗示例兼容Web端在弹窗区触摸操作与浏览器全局手势冲突的问题

pages/template/half-screen/half-screen.uvue

@@ -77,7 +77,8 @@
             this.halfNode?.style?.setProperty('transform', 'translateY(' + offset.toFixed(2) + 'px)');
             this.halfOffset = offset;
           }
-        }
+        }
+        e.preventDefault();
       },
       onHalfTouchEnd(_ : TouchEvent) {
         this.halfScreenY = 0;