javascript - 如何将状态用于多个值？

Question

我试图在我的 Add Customer JS 中使用两种状态，一种用于隐藏表单，第二种用于 JSON。

我想使用 form-State 隐藏取消按钮单击时的表单和 JSON 的初始状态。

我想做这样的事情
Is it possible to have two states in one react component

import React from 'react';
import { Button, Form, Modal } from 'semantic-ui-react';

export default class AddCustomer extends React.Component {

constructor(props) {
    super(props);
    this.state = {
        showCreateForm:false,
        formData:{
            name: '',
            address: ''
        }
    }
    this.handleChangeName = this.handleChangeName.bind(this);
    this.handleChangeAddress = this.handleChangeAddress.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
}

handleChangeName(event) {
    const value = event.target.value;

    console.log(value);

    this.setState({formData:{name:value}});

    //name: ""
    //address: ""
    console.log(this.state.formData);
}

handleChangeAddress(event) {
    const value = event.target.value;
    console.log(value);
    this.setState({formData:{address:value}});

    //name: "ram" but now there is no address in formData
    console.log(this.state.formData);
}

handleSubmit(event) {
    event.preventDefault();

    ////address: "aaaaa" now there no name in formData
    console.log(this.state.formData);

    this.setState({formData:{
        name:this.state.name, address:this.state.address
    }});
    this.props.onAddFormSubmit(this.state.formData);
}

//On cancel button click close Create user form
closeCreateForm = () => {
    this.setState({ showCreateForm: false })
}

//Open Create new Customer form
openCreateCustomer = () => {
    this.setState({ showCreateForm: true })
}

render() {

    return (
        <div>
            <Modal closeOnTriggerMouseLeave={false} trigger={
                <Button color='blue' onClick={this.openCreateCustomer}>
                    New Customer
        </Button>
            } open={this.state.showCreateForm}>
                <Modal.Header>
                    Create customer
    </Modal.Header>
                <Modal.Content>
                    <Form onSubmit={this.handleSubmit}>

                        <Form.Field>
                            <label>Name</label>
                            <input type="text" placeholder ='Name' name = "name"
                                value = {this.state.name} 
                                onChange = {this.handleChangeName}/>
                        </Form.Field>

                        <Form.Field>
                            <label>Address</label>
                            <input type="text" placeholder ='Address' name = "address"
                                value = {this.state.address}
                                onChange = {this.handleChangeAddress}/>
                        </Form.Field>
                        <br/>
                        <Button type='submit' floated='right' color='green'>Create</Button>
                        <Button floated='right' onClick={this.closeCreateForm} color='black'>Cancel</Button>
                        <br/>
                    </Form>

                </Modal.Content>
            </Modal>

        </div>
    )
}

}

Answer 1

您可以直接在构造函数上给出初始状态。例如

this.state ={showCreateForm: false, formModel:{name:'abc', address:'xyz'}}

是的，从技术上讲，您可以拥有多个状态变量。