es6中react的单选和全选

 

 

 

 

 

    swSelectAll(){

        var selectAll = !this.state.selectall;

        var newClassroomList = this.state.classroomList.slice();

        newClassroomList.map((item)=>{

            item.selected=selectAll;

        })

        this.setState({classroomList:newClassroomList,selectall:selectAll});

    }

    selectItem(item,index){

        console.log(item)

        var newitem = Object.assign({},item,{selected:!item.selected});

        var newClassroomList = this.state.classroomList.slice();

        var selectAll = true;

        newClassroomList.splice(index,1,newitem);

        for(var l=newClassroomList.length,i=0;i<l;i++){

            if(newClassroomList[i].selected==false){

                selectAll=false;

                break;

            }

        }

        this.setState({classroomList:newClassroomList,selectall:selectAll});

    }