[Solved] echarts Cannot set properties of undefined (setting ‘dataIndex’)”

Use echarts to report an error in relational graph

Questions and Answers

The background returns to the data error, the node ID is the same
Method to remove objects with the same id

 let company =[
                 {<!-- -->id:1,name:12},
                 {<!-- -->id:2,name:13},
                 {<!-- -->id:3,name:14},
                 {<!-- -->id:1,name:15},]
      let map = new Map();
      for (let item of hx) {<!-- -->
        if (!map.has(item.id)) {<!-- -->
          map.set(item.id, item);
        }
      }
      let obj = [...map.values()];
      company = obj;
      console.log(company)