React Forms:

Ajax Form Example with Validation using React

In this post, as you can see, we have prepared a form. This form uses React. You can use this form to contact us on your website. This form has a white background and the message button is yellow. Each text field has a gray line below it. By clicking on any text field, this gray line will turn yellow.

React Form Code

React Ajax Form

HTML Contact Us Form

HTML Responsive Form

React Form Validation

<!-- This script got from frontendfreecode.com -->
<div class="react-form-container"></div><a style="font-size: 8pt; text-decoration: none" target="_blank" href="http://frontendfreecode.com">Free Frontend</a>

html {
  box-sizing: border-box;
  font-size: 16px;
}
*,
*:after,
*:before {
  box-sizing: border-box;
}
body {
  font: 100% "Roboto", arial, sans-serif;
  background: #f5f5f5;
}
form {
  padding: 2rem;
  margin-top: 2rem;
  margin-right: auto;
  margin-left: auto;
  max-width: 23.75rem;
  background-color: #fff;
  border-radius: 3px;
  box-shadow: 0 15px 35px rgba(50, 50, 93, 0.1), 0 5px 15px rgba(0, 0, 0, 0.07);
}
h1 {
  margin-top: 0;
  margin-bottom: 3.236rem;
  text-align: center;
  font-size: 1.618rem;
}
.form-group {
  padding: 0;
  border: 0;
}
.form-group + .form-group {
  margin-top: 1rem;
}
label {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  touch-action: manipulation;
}
input,
textarea {
  display: block;
  padding: 0.5rem 0.75rem;
  width: 100%;
  font-size: 1rem;
  line-height: 1.25;
  color: #55595c;
  background-color: #fff;
  background-image: none;
  background-clip: padding-box;
  border-top: 0;
  border-right: 0;
  border-bottom: 1px solid #eee;
  border-left: 0;
  border-radius: 3px;
  transition: all 0.25s cubic-bezier(0.4, 0, 1, 1);
}
input:focus,
textarea:focus {
  outline: 0;
  border-bottom-color: #ffab00;
}
textarea {
  resize: vertical;
}
.btn {
  display: inline-block;
  padding: 0.75rem 1rem;
  margin-top: 1.618rem;
  font-weight: 400;
  text-align: center;
  text-transform: uppercase;
  color: #fff;
  vertical-align: middle;
  white-space: nowrap;
  background-color: #ffab00;
  border: 1px solid transparent;
  box-shadow: 0 15px 35px rgba(50, 50, 93, 0.1), 0 5px 15px rgba(0, 0, 0, 0.07);
  cursor: pointer;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 1, 1);
}
.btn:focus, .btn:hover {
  background-color: #ffc142;
  box-shadow: 0 18px 35px rgba(50, 50, 93, 0.1), 0 8px 15px rgba(0, 0, 0, 0.07);
}
.btn:focus {
  outline: 0;
}

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } const reactFormContainer = document.querySelector('.react-form-container');
class ReactFormLabel extends React.Component {
    constructor(props) {
        super(props);
    }
    render() {
        return /*#__PURE__*/(
            React.createElement("label", { htmlFor: this.props.htmlFor }, this.props.title));
    }
}
class ReactForm extends React.Component {
    constructor(props) {
        super(props); _defineProperty(this, "handleChange",
            e => {
                let newState = {};
                newState[e.target.name] = e.target.value;
                this.setState(newState);
            }); _defineProperty(this, "handleSubmit",
                (e, message) => {
                    e.preventDefault();
                    let formData = {
                        formSender: this.state.name,
                        formEmail: this.state.email,
                        formSubject: this.state.subject,
                        formMessage: this.state.message
                    };
                    if (formData.formSender.length < 1 || formData.formEmail.length < 1 || formData.formSubject.length < 1 || formData.formMessage.length < 1) {
                        return false;
                    }
                    $.ajax({
                        url: '/some/url',
                        dataType: 'json',
                        type: 'POST',
                        data: formData,
                        success: function (data) {
                            if (confirm('Thank you for your message. Can I erase the form?')) {
                                this.setState({
                                    firstName: '',
                                    lastName: '',
                                    email: '',
                                    subject: '',
                                    message: ''
                                });
                            }
                        },
                        error: function (xhr, status, err) {
                            console.error(status, err.toString());
                            alert('There was some problem with sending your message.');
                        }
                    });
                    this.setState({
                        firstName: '',
                        lastName: '',
                        email: '',
                        subject: '',
                        message: ''
                    });
                }); this.state = { name: '', email: '', subject: '', message: '' }; this.handleChange = this.handleChange.bind(this); this.handleSubmit = this.handleSubmit.bind(this);
    }
    render() {
        return /*#__PURE__*/(
            React.createElement("form", { className: "react-form", onSubmit: this.handleSubmit }, /*#__PURE__*/
                React.createElement("h1", null, "Say Hi!"), /*#__PURE__*/
                React.createElement("fieldset", { className: "form-group" }, /*#__PURE__*/
                    React.createElement(ReactFormLabel, { htmlFor: "formName", title: "Full Name:" }), /*#__PURE__*/
                    React.createElement("input", { id: "formName", className: "form-input", name: "name", type: "text", required: true, onChange: this.handleChange, value: this.state.name })), /*#__PURE__*/
                React.createElement("fieldset", { className: "form-group" }, /*#__PURE__*/
                    React.createElement(ReactFormLabel, { htmlFor: "formEmail", title: "Email:" }), /*#__PURE__*/
                    React.createElement("input", { id: "formEmail", className: "form-input", name: "email", type: "email", required: true, onChange: this.handleChange, value: this.state.email })), /*#__PURE__*/
                React.createElement("fieldset", { className: "form-group" }, /*#__PURE__*/
                    React.createElement(ReactFormLabel, { htmlFor: "formSubject", title: "Subject:" }), /*#__PURE__*/
                    React.createElement("input", { id: "formSubject", className: "form-input", name: "subject", type: "text", required: true, onChange: this.handleChange, value: this.state.subject })), /*#__PURE__*/
                React.createElement("fieldset", { className: "form-group" }, /*#__PURE__*/
                    React.createElement(ReactFormLabel, { htmlFor: "formMessage", title: "Message:" }), /*#__PURE__*/
                    React.createElement("textarea", { id: "formMessage", className: "form-textarea", name: "message", required: true, onChange: this.handleChange })), /*#__PURE__*/
                React.createElement("div", { className: "form-group" }, /*#__PURE__*/
                    React.createElement("input", { id: "formButton", className: "btn", type: "submit", placeholder: "Send message" }))));
    }
}
ReactDOM.render( /*#__PURE__*/React.createElement(ReactForm, null), reactFormContainer);

<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css'>
<link rel='stylesheet' href='https://fonts.googleapis.com/css?family=Roboto'>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react-dom.min.js'></script>

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<!-- This script got from frontendfreecode.com -->

<link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css'>
<link rel='stylesheet' href='https://fonts.googleapis.com/css?family=Roboto'>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react-dom.min.js'></script>
<style>
html {
  box-sizing: border-box;
  font-size: 16px;
}
*,
*:after,
*:before {
  box-sizing: border-box;
}
body {
  font: 100% "Roboto", arial, sans-serif;
  background: #f5f5f5;
}
form {
  padding: 2rem;
  margin-top: 2rem;
  margin-right: auto;
  margin-left: auto;
  max-width: 23.75rem;
  background-color: #fff;
  border-radius: 3px;
  box-shadow: 0 15px 35px rgba(50, 50, 93, 0.1), 0 5px 15px rgba(0, 0, 0, 0.07);
}
h1 {
  margin-top: 0;
  margin-bottom: 3.236rem;
  text-align: center;
  font-size: 1.618rem;
}
.form-group {
  padding: 0;
  border: 0;
}
.form-group + .form-group {
  margin-top: 1rem;
}
label {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  touch-action: manipulation;
}
input,
textarea {
  display: block;
  padding: 0.5rem 0.75rem;
  width: 100%;
  font-size: 1rem;
  line-height: 1.25;
  color: #55595c;
  background-color: #fff;
  background-image: none;
  background-clip: padding-box;
  border-top: 0;
  border-right: 0;
  border-bottom: 1px solid #eee;
  border-left: 0;
  border-radius: 3px;
  transition: all 0.25s cubic-bezier(0.4, 0, 1, 1);
}
input:focus,
textarea:focus {
  outline: 0;
  border-bottom-color: #ffab00;
}
textarea {
  resize: vertical;
}
.btn {
  display: inline-block;
  padding: 0.75rem 1rem;
  margin-top: 1.618rem;
  font-weight: 400;
  text-align: center;
  text-transform: uppercase;
  color: #fff;
  vertical-align: middle;
  white-space: nowrap;
  background-color: #ffab00;
  border: 1px solid transparent;
  box-shadow: 0 15px 35px rgba(50, 50, 93, 0.1), 0 5px 15px rgba(0, 0, 0, 0.07);
  cursor: pointer;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 1, 1);
}
.btn:focus, .btn:hover {
  background-color: #ffc142;
  box-shadow: 0 18px 35px rgba(50, 50, 93, 0.1), 0 8px 15px rgba(0, 0, 0, 0.07);
}
.btn:focus {
  outline: 0;
}
</style>

</head>
<body>
<div class="react-form-container"></div><div id="bcl"><a style="font-size:8pt;text-decoration:none;" href="http://www.devanswer.com">Free Frontend</a></div>
<script>
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } const reactFormContainer = document.querySelector('.react-form-container');
class ReactFormLabel extends React.Component {
    constructor(props) {
        super(props);
    }
    render() {
        return /*#__PURE__*/(
            React.createElement("label", { htmlFor: this.props.htmlFor }, this.props.title));
    }
}
class ReactForm extends React.Component {
    constructor(props) {
        super(props); _defineProperty(this, "handleChange",
            e => {
                let newState = {};
                newState[e.target.name] = e.target.value;
                this.setState(newState);
            }); _defineProperty(this, "handleSubmit",
                (e, message) => {
                    e.preventDefault();
                    let formData = {
                        formSender: this.state.name,
                        formEmail: this.state.email,
                        formSubject: this.state.subject,
                        formMessage: this.state.message
                    };
                    if (formData.formSender.length < 1 || formData.formEmail.length < 1 || formData.formSubject.length < 1 || formData.formMessage.length < 1) {
                        return false;
                    }
                    $.ajax({
                        url: '/some/url',
                        dataType: 'json',
                        type: 'POST',
                        data: formData,
                        success: function (data) {
                            if (confirm('Thank you for your message. Can I erase the form?')) {
                                this.setState({
                                    firstName: '',
                                    lastName: '',
                                    email: '',
                                    subject: '',
                                    message: ''
                                });
                            }
                        },
                        error: function (xhr, status, err) {
                            console.error(status, err.toString());
                            alert('There was some problem with sending your message.');
                        }
                    });
                    this.setState({
                        firstName: '',
                        lastName: '',
                        email: '',
                        subject: '',
                        message: ''
                    });
                }); this.state = { name: '', email: '', subject: '', message: '' }; this.handleChange = this.handleChange.bind(this); this.handleSubmit = this.handleSubmit.bind(this);
    }
    render() {
        return /*#__PURE__*/(
            React.createElement("form", { className: "react-form", onSubmit: this.handleSubmit }, /*#__PURE__*/
                React.createElement("h1", null, "Say Hi!"), /*#__PURE__*/
                React.createElement("fieldset", { className: "form-group" }, /*#__PURE__*/
                    React.createElement(ReactFormLabel, { htmlFor: "formName", title: "Full Name:" }), /*#__PURE__*/
                    React.createElement("input", { id: "formName", className: "form-input", name: "name", type: "text", required: true, onChange: this.handleChange, value: this.state.name })), /*#__PURE__*/
                React.createElement("fieldset", { className: "form-group" }, /*#__PURE__*/
                    React.createElement(ReactFormLabel, { htmlFor: "formEmail", title: "Email:" }), /*#__PURE__*/
                    React.createElement("input", { id: "formEmail", className: "form-input", name: "email", type: "email", required: true, onChange: this.handleChange, value: this.state.email })), /*#__PURE__*/
                React.createElement("fieldset", { className: "form-group" }, /*#__PURE__*/
                    React.createElement(ReactFormLabel, { htmlFor: "formSubject", title: "Subject:" }), /*#__PURE__*/
                    React.createElement("input", { id: "formSubject", className: "form-input", name: "subject", type: "text", required: true, onChange: this.handleChange, value: this.state.subject })), /*#__PURE__*/
                React.createElement("fieldset", { className: "form-group" }, /*#__PURE__*/
                    React.createElement(ReactFormLabel, { htmlFor: "formMessage", title: "Message:" }), /*#__PURE__*/
                    React.createElement("textarea", { id: "formMessage", className: "form-textarea", name: "message", required: true, onChange: this.handleChange })), /*#__PURE__*/
                React.createElement("div", { className: "form-group" }, /*#__PURE__*/
                    React.createElement("input", { id: "formButton", className: "btn", type: "submit", placeholder: "Send message" }))));
    }
}
ReactDOM.render( /*#__PURE__*/React.createElement(ReactForm, null), reactFormContainer);
</script>

</body>
<script>'undefined'=== typeof _trfq || (window._trfq = []);'undefined'=== typeof _trfd && (window._trfd=[]),_trfd.push({'tccl.baseHost':'secureserver.net'},{'ap':'cpbh-mt'},{'server':'p3plmcpnl484880'},{'dcenter':'p3'},{'cp_id':'765442'},{'cp_cl':'8'}) // Monitoring performance to make your website faster. If you want to opt-out, please contact web hosting support.</script><script src='https://img1.wsimg.com/traffic-assets/js/tccl.min.js'></script></html>

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