jsは配列オブジェクトのマルチ削除を実現します.

delete = () => {
     

        const Ids = this.state.selectRows.map(item => {
     
            return item.Id;
        });//      id  
        if (Ids.length === 1) {
     //       
            const Id = this.state.selectRows[0].Id;
            //               
            let indexdel = this.state.data.findIndex(item => item.Id === Id);
           
            this.state.data.splice(indexdel, 1);
            let data =  this.state.data;
            this.setState({
     
                data,
                selectRows: []
            });
        } else {
     //      
            let alldata = this.state.data;
            for (let i= alldata.length - 1; i>= 0; i--) {
     //        
                let id = alldata[i].Id;
                for (let j = Ids.length; j >= 0; j--) {
     
                //        id      id    
                    if (id=== Ids[j]) {
     //  id  
                        alldata.splice(index, 1);//          
                    }
                }
            }
            let data = alldata;
            this.setState({
     
                data,
                selectRows: []
            });
        }
    };