fix(websocket bux): bug

src/controllers/server.js

@@ -124,7 +124,10 @@ const server = {
 
 	    let msg = pako.gzip(encodeURIComponent(JSON.stringify(d)), { to: "string" });
 
-	    _this.websocket.send(msg);
+		if(_this.websocket!=null){
+			_this.websocket.send(msg);
+		}
+	    
 	},
     websocket: null,
     wxErrorCount: 0,

src/index.html

@@ -37,6 +37,8 @@
 				allowEdit:true,
 				forceCalculation:false,
 				plugins: ['chart'],
+				allowUpdate:true,
+				updateUrl:"www.baidu.com",
 				data: [sheetCell,sheetFormula,sheetConditionFormat,sheetTable,sheetSparkline,sheetComment,sheetPivotTableData,sheetPivotTable,sheetChart]
 			})