在React.js中创建我的第一个应用程序，并希望将联系表单提交给带有Ajax的电子邮件。我已经将此解决方案用作指南：https://liusashmily.wordpress.com/author/liusashmily/但是完整的组件文件不可用，只有部分我无法联系到作者。
// Create Component
class Contact extends React.Component {
constructor(props){
super(props);
this.state = {
contactEmail: '',
contactMessage: ''
};
this.handleSubmit = this.handleSubmit.bind(this);
this.handleChange = this.handleChange.bind(this);
this.handleChangeMsg = this.handleChangeMsg.bind(this);
}
handleChange(event) {
this.setState({
contactEmail: event.target.value,
});
}
handleChangeMsg(event) {
this.setState({
contactMessage: event.target.value
});
}
handleSubmit(event) {
event.preventDefault();
this.setState({
type: 'info',
message: 'Sending…'
});
$.ajax({
url: 'php/mailer.php',
type: 'POST',
data: {
'form_email': this.state.contactEmail,
'form_msg': this.state.contactMessage
},
cache: false,
success: function(data) {
// Success..
this.setState({
type: 'success',
message: 'We have received your message and will get in touch shortly. Thanks!'
});
}.bind(this),
error: function(xhr, status, err) {
this.setState({
type: 'danger',
message: 'Sorry, there has been an error. Please try again later or visit us at SZB 438.'
});
}.bind(this)
});
}
render() {
return (
<div className="contact">
<form className="form" onSubmit={this.handleSubmit} id="formContact">
<label>Email</label>
<input id="formEmail" type="email" name="formEmail" value={this.state.contactEmail} onChange={this.handleChange} required />
<label>Meddelande</label>
<textarea id="formMsg" name="formMsg" rows="8" cols="40" value={this.state.contactMessage} onChange={this.handleChangeMsg} required></textarea>
<input type="submit" value="Submit" className="btn--cta" id="btn-submit" />
</form>
</div>
)
}
}
<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
// $name = strip_tags(trim($_POST[“form_name”]));
// $name = str_replace(array(“\r”,”\n”),array(” “,” “),$name);
$email = filter_var(trim($_POST["formEmail"]), FILTER_SANITIZE_EMAIL);
$message = trim($_POST["formMsg"]);
// Check that data was sent to the mailer.
if ( empty($message) OR !filter_var($email, FILTER_VALIDATE_EMAIL)) {
// Set a 400 (bad request) response code and exit.
http_response_code(400);
echo "Oops! There was a problem with your submission. Please complete the form and try again.";
exit;
}
// Set the recipient email address.
$recipient = "mimilundberg@icloud.com";
// Set the email subject.
$subject = "New message from $email Via React Site";
// Build the email content.
$email_content .= "Email: $email\n\n";
$email_content .= "Message: \n$message\n";
// Build the email headers.
$email_headers = "From: <$email>";
// Send the email.
if (mail($recipient, $subject, $email_content, $email_headers)) {
// Set a 200 (okay) response code.
http_response_code(200);
echo "Thank You! Your message has been sent.";
} else {
// Set a 500 (internal server error) response code.
http_response_code(500);
echo "Oops! Something went wrong and we couldn’t send your message.";
}
} else {
// Not a POST request, set a 403 (forbidden) response code.
http_response_code(403);
echo "There was a problem with your submission, please try again.";
}
?>
在控制台日志中出现以下错误：
POST http://localhost:8080/php/mailer.php 404（未找到）
..它说错误发生在“jquery-3.2.1.min.js：4”文件中。
我在html doc中包含了jQuery脚本：
<!Doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title></title>
<!-- <link rel="stylesheet" href="dist/styles.css"> -->
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
</head>
<body>
<div id="app"></div>
<script src="dist/bundle.js"></script>
</body>
</html>
非常感谢任何意见！
答案 0 :(得分：2)
我找到了解决方案。这是我的联系人组件：
import React, { Component } from 'react';
// Contact component render contact form
class Contact extends React.Component {
constructor(props){
super(props);
this.state = {
contactEmail: '',
contactMessage: ''
};
this._handleSubmit = this._handleSubmit.bind(this);
this._handleChange = this._handleChange.bind(this);
this._handleChangeMsg = this._handleChangeMsg.bind(this);
}
// Change state of input field so text is updated while typing
_handleChange(e) {
this.setState({
contactEmail: e.target.value,
});
}
// Change state of input field so text is updated while typing
_handleChangeMsg(e) {
this.setState({
contactMessage: e.target.value
});
}
_handleSubmit(e) {
e.preventDefault();
this.setState({
contactEmail: '',
contactMessage: ''
});
$.ajax({
url: process.env.NODE_ENV !== "production" ? '/getMail' : "http://www.fransbernhard.se/magden/php/mailer.php",
type: 'POST',
data: {
'form_email': this.state.contactEmail,
'form_msg': this.state.contactMessage
},
cache: false,
success: function(data) {
// Success..
this.setState({
contactEmail: 'success',
contactMessage: '<h1>Kontakt skickad!</h1><p>Återkommer så fort som möjligt.</p>'
});
$('#formContact').slideUp();
$('#formContact').after(this.state.contactMessage);
console.log('success', data);
}.bind(this),
// Fail..
error: function(xhr, status, err) {
console.log(xhr, status);
console.log(err);
this.setState({
contactEmail: 'danger',
contactMessage: '<h1>Sorry det blev fel</h1><p>Försök gärna igen, eller mejla mig direkt på magdamargaretha@gmail.com</p>'
});
console.log(this.state.contactEmail + this.state.contactMessage + 'fail');
}.bind(this)
});
}
render() {
return (
<div className="contact" id="contact">
<div className="filter">
<form className="form" onSubmit={this._handleSubmit} id="formContact">
<label>Email</label>
<input id="formEmail" type="email" name="formEmail" value={this.state.contactEmail} onChange={this._handleChange} required/>
<label>Meddelande</label>
<textarea id="formMsg" name="formMsg" rows="8" cols="40" value={this.state.contactMessage} onChange={this._handleChangeMsg} required></textarea>
<input type="submit" value="Submit" className="btn--cta" id="btn-submit" />
</form>
</div>
</div>
)
}
}
export default Contact;
mailer.php文件：
<?php
// trim() function strips any white space from beginning and end of the string
$email = filter_var(trim($_POST["form_email"]), FILTER_SANITIZE_EMAIL);
// strip_tags() function strips all HTML and PHP tags from a variable.
$message = strip_tags($_POST["form_msg"]);
// Check that data was sent to the mailer.
if ( empty($message) OR !filter_var($email, FILTER_VALIDATE_EMAIL)) {
// Set a 400 (bad request) response code and exit.
http_response_code(400);
echo "Oops! There was a problem with your submission. Please complete the form and try again.";
exit;
}
// Set the recipient email address.
$recipient = "mimilundberg@icloud.com";
// Set the email subject.
$subject = "Message to magdalundberg.se from: $email";
// Build the email content.
$body .= "Email: $email\n\n";
$body .= "Message: \n$message\n";
// success
$success = mail($recipient, $subject, $body, "From:" . $email);
// Send the email.
if ($success) {
// Set a 200 (okay) response code.
http_response_code(200);
echo "Thank You! Your message has been sent.";
} else {
// Set a 500 (internal server error) response code.
http_response_code(500);
echo "Oops! Something went wrong and we couldn’t send your message.";
}
?>
答案 1 :(得分：1)
由于React是UI组件框架，因此您可以将第三方库用于ajax发布。 https://www.npmjs.com/package/react-axios
这里是如何使用此示例。 https://handyopinion.com/reactjs-post-form-with-ajax/