import React from "react"
function App() {
let email = ''
let password = ''
let alertMessage = ''
let errors
const validateForm = () => {
errors = {}
let emailSpaces = email.indexOf(' ')
let passwordSpaces = password.indexOf(' ')
if (emailSpaces > 0) {
errors.emailSpaces = 'в поле email пробелы!'
}
if (passwordSpaces > 0) {
errors.passwordSpaces = 'в пароле пробелы!'
}
if (!email.length){
errors.email = 'email не заполнен'
}
if (!password.length){
errors.password = 'пароль не заполнен'
}
if(!Object.keys(errors).length){
console.log({ email, password })
return true
}else{
alertMessage = Object.values(errors)
alert(alertMessage)
return false
}
}
const clearForm = () => {
email = ''
password = ''
alert('Поля очищены')
}
const detectChangeForm = (event) => {
switch (event.target.name) {
case 'email':
email = event.target.value
break;
case 'password':
password = event.target.value
break;
default:
return false
}
validateForm(email, password)
}
// я не понял как блокировать автоматическое обновление страницы при submit
const handleSubmit = () => {
if(!Object.keys(errors).length){
console.log({ email, password })
return true
}else{
alertMessage = Object.values(errors)
alert(alertMessage)
return false
}
}
return (
<div style={{padding: 'var(--size-8)'}}>
<form>
<input type="email" placeholder={'E-Mail'} name="email" onChange={detectChangeForm} />
<input type="password" placeholder={'Пароль'} name="password" onChange={detectChangeForm} />
<button type="submit" onClick={handleSubmit}>Войти</button>
</form>
</div>
)
}
export default App
Средний
