问使用react将元素添加到属于某个状态的列表

EN

this.state = {
        type:
        {
            name: '',
            type2: {
                atribute: '',
                parameter: [
                    {
                        value: '',
                        classtype: ''
                    }
                ],
                name: '',
                atribute1: '',
                atribute2: ''
            }
        }
    }

addParams = () => {

    let newParam = {
        value: this.state.type.type2.parameter.value,
        classtype: this.state.type.type2.parameter.classtype
    };

    /** */
    this.setState(prevState => ({


        type: {

            // keep all the other key-value pairs of type
            ...prevState.type,

            type2: {

                ...prevState.type.type2,

                //this is supposed to add an element to a list
                parameter: [...prevState.type.type2.parameter, newParam]
            }
        }
    }))  
}