js 向数组追加数据，为什么只追加上了最后一条？

Question

var data =[];
 console.log("收到的参数转成arr，",list) 
                for (var j = 0; j < list.length; j++) {  
                    let dMap = {};
                    var list_name = list[j].name; 
                    var list_type = list[j].type;
                    var list_showSymbol = list[j].showSymbol;
                    var list_data = list[j].data; // list<Map> 
                    dMap = createMap(list_name,list_type,list_showSymbol,list_data,markLineData); // 类型object
                   console.log("dMap,", dMap) 
                        data =[];
                        data.push(dMap);   
                         console.log("data,",data);
                    
                }
                 

Answer 1

删除循环里面的data=[];