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How can I show/hide a form div in React.Component?

I am creating a CV Application project and I have a button that allows the user to Add Work Experience. When the user clicks the button a form pops up and they are able to fill the information out and click Submit.
I'm trying to make it so once the user hits Submit, the form div stays hidden until the user clicks Add Work Experience again. I've made something similar before in vanilla JS where I simply changed the forms class from display: block to display: none but that doesn't seem possible in React.
import React, { Component } from "react";
class WorkExperience extends Component {
render() {
const workExperience = [
{
title: "title",
company: "company",
location: "location",
description: "description",
},
];
return (
<>
<div id="content" className="content">
<h1 className="title">Work Experience</h1>
<div className="work-experience">
<p>Job Title: {workExperience[0].title}</p>
<p>Company: {workExperience[0].company}</p>
<p>Location: {workExperience[0].location}</p>
<p>Description: {workExperience[0].description}</p>
</div>
</div>
<button className="form-btn">+ Add Work Experience</button>
</>
);
}
}
export default WorkExperience;
And here is the form code I am currently using. This is the form I want to show/hide after clicking the Add Work Experience button shown above.
<form>
<label for="title">Job Title</label>
<input id="title" className="form-row" type="text" name="title" />
<label for="company">Company</label>
<input className="form-row" type="text" name="company" />
<label for="location">Location</label>
<input className="form-row" type="text" name="location" />
<label for="description">Job Description</label>
<textarea rows="4" cols="50" name="description"></textarea>
<button className="save">Save</button>
<button className="cancel">Cancel</button>
</form>

You can use an if statement or a ternary to return different jsx. That would look something like this. There are other ways as well, however this is a basic example of something you could do.
<>
{
shouldShow ?
(
<div id="content" className="content">
<h1 className="title">Work Experience</h1>
<div className="work-experience">
<p>Job Title: {workExperience[0].title}</p>
<p>Company: {workExperience[0].company}</p>
<p>Location: {workExperience[0].location}</p>
<p>Description: {workExperience[0].description}</p>
</div>
</div>
<button className="form-btn">+ Add Work Experience</button>
) : (
<form>
<label for="title">Job Title</label>
<input id="title" className="form-row" type="text" name="title" />
<label for="company">Company</label>
<input className="form-row" type="text" name="company" />
<label for="location">Location</label>
<input className="form-row" type="text" name="location" />
<label for="description">Job Description</label>
<textarea rows="4" cols="50" name="description"></textarea>
<button className="save">Save</button>
<button className="cancel">Cancel</button>
</form>
)
}
</>
Where shouldShow is what determines whether the form is showing or not.
The benefit to this is that if the form is showing, the other content is not added to the DOM and vice versa.
shouldShow would be a variable you could add to state, and when the button is clicked, you toggle the state variable, causing a re-render.
https://reactjs.org/docs/state-and-lifecycle.html
You could also choose to render styles depending on whether or not that component is showing, the key being that boolean state variable that is re-rendering the component.

Use Repeater Felilds to add User Work Experience. It's so easy to handle like this.
Repeater Component
import React from "react";
const Repeater = ({ inputFields, setInputFields }) => {
const handleFormChange = (index, event) => {
let data = [...inputFields];
data[index][event.target.name] = event.target.value;
setInputFields(data);
};
const removeFields = (index) => {
let data = [...inputFields];
data.splice(index, 1);
setInputFields(data);
};
return (
<div className="row">
{inputFields.map((input, index) => {
return (
<>
<div className="form-group col-sm-12 col-md-4 mb-3">
<div className="controls">
<input
type="text"
className="form-control inputset"
id="title"
placeholder="title"
name="title"
data-validation-required-message="This field is required"
aria-invalid="true"
required
value={input.title}
onChange={(event) => handleFormChange(index, event)}
/>
<div className="help-block" />
</div>
</div>
<div className="form-group col-sm-12 col-md-4 mb-3">
<div className="date-picker">
<input
type="text"
className="pickadate form-control inputset"
value={input.company}
onChange={(event) => handleFormChange(index, event)}
name="company"
id="pass"
data-validation-required-message="This field is required"
data-toggle="tooltip"
data-trigger="hover"
data-placement="top"
data-title="Date Opened"
data-original-title=""
required
/>
</div>
</div>
<div className="form-group col-sm-12 col-md-4 d-flex mb-3">
<input
type="text"
className="form-control inputset"
id="location"
placeholder="location"
name="location"
data-validation-required-message="This field is required"
aria-invalid="true"
required
value={input.location}
onChange={(event) => handleFormChange(index, event)}
/>
<input
type="text"
className="form-control inputset"
id="description"
placeholder="description"
name="description"
data-validation-required-message="This field is required"
aria-invalid="true"
required
value={input.description}
onChange={(event) => handleFormChange(index, event)}
/>
{inputFields.length === 1 ? null : (
<button
type="button"
className=" d-flex justify-content-center align-items-center ml-1 btn"
onClick={() => {
removeFields();
}}
>
<i className="uil-trash-alt" />
</button>
)}
</div>
</>
);
})}
</div>
);
};
export default Repeater;
Main Component
use these as states and pass the objects to the Repeater Component. First, the state is empty and when the user clicks on the button Add More Experience The files auto-show.
const [inputFields, setInputFields] = useState([
{ degree_title: "", institue: "", end_date: "" },
]);
const addFields = () => {
let newfield = { degree_title: "", institue: "", end_date: "" };
setInputFields([...inputFields, newfield]);
};
<Repeater
inputFields={inputFields}
setInputFields={setInputFields}
addFields={addFields} />
I wish this solution helps you :) Make sure to change the state object according to your requirements.

Modal Textarea reloads with every click

Ihave this modal with 2 textarea, but every time that i type some keybord it just stop and go out of the text area.
the problem is on onChange={event => setTitle(event.target.value)} but i dont know what can i do.
<Modal.Body>
<form onSubmit={Patch} className="form">
<div className="control">
<div className="field">
<h2>What's in your mind?</h2>
<textarea
className="input1"
type="text"
value={title}
placeholder="enter your title"
onChange={event => setTitle(event.target.value)}
/>
<
/div>
<div className="field">
<textarea
className="input2"
type="text"
value={content}
placeholder="insert your content"
onChange={event => setContent(event.target.value)}
/>
</div>
<div className="form-btn">
<button onClick={() => setModalshow2(false)} disabled={!title || !content} type="submit" className="btnSend">CREATE</button>
</div>
</div>
</form>
</Modal.Body>

When you type something in the text area, the parent component is also re-rendering. Try with autoFocus attribute
<textarea
className="input2"
type="text"
value={content}
placeholder="insert your content"
onChange={event => setContent(event.target.value)}
autoFocus
/>

Cant type in an input field of a form in React js

I am new to React js. I tried post axios call using react hooks. But after implementing the code and starting the server, I cant type in the form. Previously I could type. I can only type in the phone and email fields. I cant type in first_name,last_name and message fields. I dont know what is the issue.
My MessageForm.js:
const MessageForm = () => {
const url = 'https://example.herokuapp.com/api/messages'
const [data, setData] = useState({
first_name: "",
last_name: "",
email:"",
phone:"",
msz:""
})
function submit(e){
e.preventDefault();
axios.post(url,{
first_name: data.first_name,
last_name:data.last_name,
email:data.email,
phone:data.phone,
msz:data.msz
})
.then(res=>{
console.log(res.data)
})
}
function handle(e){
const newdata = {...data}
newdata[e.target.id] = e.target.value
setData(newdata)
console.log(newdata)
}
return (
<div className="message-form">
<div className="container">
<div className="title">
<span>Contact Now</span>
<div className="main-title">Send us a message</div>
</div>
{/* form start */}
<form action="" className="apply" onSubmit={(e)=> submit(e)}>
<div className="row row-1">
{/* Name here */}
<div className="input-field name">
<label htmlFor="Name">First Name</label>
<input onChange ={(e) => handle(e)} value = {data.first_name}
type="text"
placeholder="Your First Name"
name="Name"
id="name"
/>
</div>
<div className="input-field name">
<label htmlFor="Name">Last Name</label>
<input onChange ={(e) => handle(e)} value = {data.last_name}
type="text"
placeholder="Your Last Name"
name="Name"
id="name"
/>
</div>
</div>
<div className="row row-2">
{/* phone here */}
<div className="input-field phone">
<label htmlFor="Phone">Phone</label>
<input onChange ={(e) => handle(e)} value = {data.phone}
type="text"
placeholder="Your Phone Here"
name="Phone"
id="phone"
/>
</div>
{/* Email here */}
<div className="input-field email">
<label htmlFor="Email">Email Address</label>
<input onChange ={(e) => handle(e)} value = {data.email}
type="text"
placeholder="Your Email Address"
name="Email"
id="email"
/>
</div>
</div>
{/* date select */}
<div className="row row-3">
{/* Message here */}
<div className="input-field message">
<label htmlFor="Message">Message</label>
<textarea onChange ={(e) => handle(e)} value = {data.msz}
placeholder="Enter Message Here"
name="Message"
id="message"
/>
</div>
</div>
{/* submit button */}
<ExploreButton hoverText="Submit" hover="hoverTrue">
Send Now
</ExploreButton>
</form>
{/* Form end */}
</div>
</div>
);
};
export default MessageForm;

It is because you are assigning id="name" to your first_name and last_name fields. So it doesn't change the correct field inside the data object.
Example on first_name:
const handleInputChange = e => {
setData(d => ({...d, [e.target.id]: e.target.value}))
}
<input onChange ={(e) => handle(e)} value = {data.first_name}
onChange={handleInputChange}
type="text"
placeholder="Your First Name"
name="Name"
id="first_name"
/>
PS: You don't need to do onChange={e => handle(e)}. The handle will get the e argument as default with: onChange={handle}

Update id="name" to id="first_name" and id="last_name"
Update id="message" to id="msz"
Name of key state must be the same with id

React - Unable to get pre-filled form

Objective:
Need to pre-fill the form if the user has address saved in the DB.
Issue:
I am passing down the address object (coming from backend for the logged in user). :
{
city: "CA"
line1: "testline1"
line2: "testline2"
phone: "7772815615"
pin: "1234"
state: "CA"
user: "5eea03a736b70722c83a7b63"
}
Though I am able to console log it, but I am unable to pre-populate it in the form (rendered by the child component)
Child Component
let addressFinalValue = {};
const addressValue = (e) => {
addressFinalValue[e.target.name] = e.target.value;
};
const propsAddress = props.address;
const [address, setAddress] = useState(propsAddress);
console.log(propsAddress); // < -- ABLE TO CONSOLE LOG IT
return (
<div>
<div className="modal-header ">
<h5 className="modal-title text-center">
{address ? 'Please enter your address' : 'Please confirm your address'}
</h5>
<button className="close" data-dismiss="modal" aria-label="close">
<span className="edit-order-button" aria-hidden="true">Edit order</span>
</button>
</div>
<div className="container my-4">
<form onSubmit={submitHandler}>
{error && <p className="login-error" style={{ color: "red" }}>{error}</p>}
<div className="form-group">
<input id="address-line-1" className="form-control" value={propsAddress.line1}
onChange={addressValue} name="line1" type="text" placeholder="Line 1" />
</div>
<div className="form-group">
<input id="address-line-2" className="form-control" value={propsAddress.line2}
onChange={addressValue} name="line2" type="text" placeholder="Line 2" />
</div>
<div className="form-group">
<input id="city" className="form-control" value={propsAddress.city}
onChange={addressValue} name="city" type="text" placeholder="City" />
</div>
<div className="form-group">
<input id="state" className="form-control" value={propsAddress.state}
onChange={addressValue} name="state" type="text" placeholder="State" />
</div>
<div className="form-group">
<input id="pin" className="form-control" value={propsAddress.pin}
onChange={addressValue} name="pin" type="text" placeholder="PIN" />
</div>
<div className="form-group">
<input id="phone" className="form-control" value={propsAddress.phone}
onChange={addressValue} name="phone" type="text" placeholder="Phone Number" />
</div>
<hr />
<button className="btn btn-success">Save Address & Continue</button>
</form>
</div>
</div> );
Is there something I am missing here? I don't know what it is.

I would achieve this using the following:
Make the child component a class with state. Pass the child component a populate prop, with the address values.
<ChildComponent populate={address} />
constructor(props){
this.state = {
...props.populate
}
}
handleAddressChange(e, addressItem){
this.setState({[addressItem]: event.target.value});
}
Then, in your form, set the value of each form item equal to the stateful address value. For example:
<div className="form-group">
<input id="address-line-1" className="form-control" value={this.state.line1}
onChange={(e) => handleAddressChange(e, 'line1')} name="line1" type="text" placeholder="Line 1" />
</div>
Make sure your onChange event handler is updating the child components this.state.address value using setState.
Checkout this file for more info: https://github.com/ccrowley96/grocerylist/blob/master/client/src/components/AddEditModal/AddEditModal.js
I do something very similar.

A component is changing an uncontrolled input of type text to be controlled?

At the moment I try to write in the form and save it in the state, I get this error:
Warning: A component is changing an uncontrolled input of type text to
be controlled. Input elements should not switch from uncontrolled to
controlled (or vice versa). Decide between using a controlled or
uncontrolled input element for the lifetime of the component.
import React from 'react';
class ExerciseNew extends React.Component {
constructor(props) {
super(props);
this.state = {value: ''}
this.handleChange = this.handleChange.bind(this);
this.handleSubmit = this.handleSubmit.bind(this);
}
handleSubmit = (e) => {
e.preventDefault();
console.log(this.state)
}
handleChange = (e) => {
this.setState({
[e.target.name]: e.target.value
})
}
render() {
return (
<div className="container">
<form
onSubmit={this.handleSubmit}
>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="title"
name="title"
onChange={this.handleChange}
value={this.state.title}
/>
</div>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="description"
name="description"
onChange={this.handleChange}
value={this.state.description}
/>
</div>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="img"
name="img"
onChange={this.handleChange}
value={this.state.img}
/>
</div>
<div className="form-row">
<div className="col">
<input
type="text"
className="form-control"
placeholder="leftColor"
name="leftColor"
onChange={this.handleChange}
value={this.state.leftColor}
/>
</div>
<div className="col">
<input
type="text"
className="form-control"
placeholder="rightColor"
name="rightColor"
onChange={this.handleChange}
value={this.state.rightColor}
/>
</div>
</div>
<button
type="submit"
className="btn btn-primary"
>
Submit
</button>
</form>
</div>
)
}
}
export default ExerciseNew;
I find it curious because I am following the documentation of react, along with this video in Spanish.
I tried using babeljs and the features of ES7 so as not to have to create the constructor, so I did something like this:
import React from 'react';
class ExerciseNew extends React.Component {
state = {}
handleSubmit = (e) => {
e.preventDefault();
console.log(this.state)
}
handleChange = (e) => {
this.setState({
[e.target.name]: e.target.value
})
}
render() {
return (
<div className="container">
<form
onSubmit={this.handleSubmit}
>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="title"
name="title"
onChange={this.handleChange}
value={this.state.title}
/>
</div>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="description"
name="description"
onChange={this.handleChange}
value={this.state.description}
/>
</div>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="img"
name="img"
onChange={this.handleChange}
value={this.state.img}
/>
</div>
<div className="form-row">
<div className="col">
<input
type="text"
className="form-control"
placeholder="leftColor"
name="leftColor"
onChange={this.handleChange}
value={this.state.leftColor}
/>
</div>
<div className="col">
<input
type="text"
className="form-control"
placeholder="rightColor"
name="rightColor"
onChange={this.handleChange}
value={this.state.rightColor}
/>
</div>
</div>
<button
type="submit"
className="btn btn-primary"
>
Submit
</button>
</form>
</div>
)
}
}
export default ExerciseNew;
and still I get the same error.

Your form is already a controlled components.
You are getting warning beacuse, you have not initialized your state. You need to have each variable in state like,
this.state = {
title: '',
description: '',
img: '',
leftColor: '',
rightColor: ''
}
Note: A you are already using arrow function for handleSubmit & handleChange, you don't need to bind them in constructor,
this.handleChange = this.handleChange.bind(this); //not needed
this.handleSubmit = this.handleSubmit.bind(this); //not needed
Live Example:
class ExerciseNew extends React.Component {
constructor(props) {
super(props);
this.state = {
title: "",
description: "",
img: "",
leftColor: "",
rightColor: "",
};
}
handleSubmit = (e) => {
e.preventDefault();
console.log(this.state)
}
handleChange = (e) => {
this.setState({
[e.target.name]: e.target.value
})
}
render() {
return (
<div className="container">
<form
onSubmit={this.handleSubmit}
>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="title"
name="title"
onChange={this.handleChange}
value={this.state.title}
/>
</div>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="description"
name="description"
onChange={this.handleChange}
value={this.state.description}
/>
</div>
<div className="form-group">
<input
type="text"
className="form-control"
placeholder="img"
name="img"
onChange={this.handleChange}
value={this.state.img}
/>
</div>
<div className="form-row">
<div className="col">
<input
type="text"
className="form-control"
placeholder="leftColor"
name="leftColor"
onChange={this.handleChange}
value={this.state.leftColor}
/>
</div>
<div className="col">
<input
type="text"
className="form-control"
placeholder="rightColor"
name="rightColor"
onChange={this.handleChange}
value={this.state.rightColor}
/>
</div>
</div>
<button
type="submit"
className="btn btn-primary"
>
Submit
</button>
</form>
</div>
)
}
}
ReactDOM.render(
<ExerciseNew/>,
document.getElementById("root")
);
<div id="root"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.9.0/umd/react.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.9.0/umd/react-dom.development.js"></script>