Hello guys i have a problem, i have a 2 checkbox, each of them have value. The first checkbox is Any/Not, and the second one is Valid/Invalid. If the checkbox is checked the value will change to Any, if not checked the value will be not, same for the valid/invalid one.
I already tried, but when the checkbox is unchecked the value im getting is undefined. Btw i use react, node, and mysql. But the value is succesfully changed when the box is checked.
Here is the code :
FormDataProvider.js
import React from 'react';
import {createContext, useState} from "react"
export const FormData = createContext();
export default function FormDataProvider({children}) {
const [formData , setFormData] = useState({
cName : "",
Address : "",
phoneNumber : "",
presidentName : "",
managerEmail : "",
managerPhone : "",
picEmail : "",
picPhone : "",
date: "",
mainBusiness : "",
employeeNumber : "",
numberOfCustomer : "",
myFile : "",
any : "" ,
valid : ""
});
return (
<FormData.Provider value={{ formData, setFormData }}>
{children}
</FormData.Provider>
);
}
Form.js
const Form = () => {
let navigate = useNavigate();
Axios.defaults.withCredentials = true;
const { emailLog, setEmailLog } = useContext(EmailUser);
const { loginStatus, setLoginStatus } = useContext(LoginStatus);
const { formData , setFormData} = useContext(FormData);
const handleChange = event => {
if (event.target.checked) {
setFormData({...formData, any : event.target.checked})
} else {
setFormData({...formData, any : "Not"})
}
};
const handleChange2 = event => {
if (event.target.checked) {
setFormData({...formData, valid : event.target.checked})
} else {
setFormData({...formData, valid : "Invalid"})
}
};
return (
<form method='POST' encType='multipart/form-data' action='http://localhost:3001/registration'>
<div className=''>
<input className='inputForm' type='email' value={emailLog} name='email' required onChange={(e) => {
setEmailLog(e.target.value) }} />
<input className='inputForm' type='text' placeholder='Company Name' name="CompanyName" required value={formData.cName} onChange={(event) =>
setFormData({ ...formData, cName: event.target.value })}/>
<input className='inputForm' type='text' placeholder='Address' name="Address" required value={formData.Address} onChange={(event) =>
setFormData({ ...formData, Address: event.target.value })} />
<input className='inputForm' type='tel' placeholder='Phone Number' name="Phone" required value={formData.phoneNumber} onChange={(event) =>
setFormData({ ...formData, phoneNumber: event.target.value })} />
<input className='inputForm' type='text' placeholder='President Director Name' name="PresidentName" required value={formData.presidentName} onChange={(event) =>
setFormData({...formData, presidentName: event.target.value})} />
<input className='inputForm' type='email' placeholder='Manager Email' name="ManagerEmail" required value={formData.managerEmail} onChange={(event) =>
setFormData({...formData, managerEmail: event.target.value})} />
<input className='inputForm' type='tel' placeholder='Manager Phone' name="ManagerPhone" required value={formData.managerPhone} onChange={(event) =>
setFormData({...formData, managerPhone: event.target.value})} />
<input className='inputForm' type='email' placeholder='PIC Email' name="PICEmail" required value={formData.picEmail} onChange={(event) =>
setFormData({...formData, picEmail: event.target.value})} />
<input className='inputForm' type='tel' placeholder='PIC Phone' name="PICPhone" required value={formData.picPhone} onChange={(event) =>
setFormData({...formData, picPhone: event.target.value})} />
<input className='inputForm' type='date' placeholder='Date' name="EstablishedDate" required value={formData.date} onChange={(event) =>
setFormData({...formData, date: event.target.value})} />
<select className='selectBox' name='ChoiceBusiness' required onChange={(event) =>
setFormData({...formData, mainBusiness: event.target.value})} >
<option value="" disabled selected hidden>Choose Main Business...</option>
<option value="Software License">Software License</option>
<option value="IT Services & Consulting">IT Services & Consulting</option>
<option value="IT Outsourcing">IT Outsourcing</option>
<option value="Hardware">Hardware</option>
<option value="General Trading">General Trading</option>
<option value="Others">Others</option>
</select>
<select className='selectBox' name='EmployeeNumber' required onChange={(event) =>
setFormData({...formData, employeeNumber: event.target.value})} >
<option value="" disabled selected hidden>Choose Employee Number...</option>
<option value="1-50">1-50</option>
<option value="51-100">51-100</option>
<option value="101-250">101-250</option>
<option value="251-500">251-500</option>
<option value="500 ">500 </option>
</select>
<input className='inputForm' type="number" placeholder='Number of Customer' name="NumberOfCustomer" required value={formData.numberOfCustomer} onChange={(event) =>
setFormData({...formData, numberOfCustomer: event.target.value})} />
<input className='inputFormDate' type="file" name='pdfFiles' multiple required onChange={(event) =>
setFormData({...formData, myFile : event.target.value})} />
<div className='formCheckboxes'>
<div className='formCheckbox'>
<p>SK Menhum & Akta Notaris</p>
<div >
<input type="checkbox" value="Any" name="Any" onChange={handleChange}/>
<label for="inlineCheckbox1">Any</label>
</div>
<div >
<input type="checkbox" value="Valid" name="Valid" onChange={handleChange2}/>
<label for="inlineCheckbox2">Valid</label>
</div>
</div>
</div>
<button className='btnSubmit' type='submit'> Submit</button>
</div>
</form>
)
}
export default Form
CodePudding user response：
- Always use the functional update format to update state based on its previous value to prevent loss of batched state updates.
- When checked, you're setting the value to the
checkedproperty which is a Boolean. You want thevalueproperty instead
Try something like this
setFormData((fd) => ({
...fd,
any: event.target.checked ? event.target.value : "Not",
}));
You could probably use something generic for all inputs provided their name attributes match the object keys you want.
Checkboxes could provide their off value in a data-attribute, eg
<input
type="checkbox"
value="Any"
data-off="None"
name="any"
onChange={handleChange}
/>
// generic handler for all inputs
const handleChange = (e) => {
let value;
switch (e.target.type) {
case "checkbox":
value = e.target.checked ? e.target.value : e.target.dataset.off;
break;
case "file":
value = e.target.files[0];
break;
default:
value = e.target.value;
}
setFormData((fd) => ({
...fd,
[e.target.name]: value,
}));
};