elementUI复选框change事件选择不写方法处理方式

<el-form-item prop="executType">
    <el-checkbox-group v-model="fileApprForm.executType">
        <el-checkbox @change="leaderVisible=!leaderVisible" label="呈送领导"></el-checkbox>
        <el-checkbox @change="executerVisible=!executerVisible" label="发送给执行人"></el-checkbox>
    </el-checkbox-group>
</el-form-item>

export default {
        data() {
            return {
                leaderVisible: false,
                executerVisible: false,               
            },
        }
},