plugin-bootstrap3/inline-form.html

<!DOCTYPE html>
<html lang="en">
    <head>
        <title>Bootstrap 3 inline form - FormValidation</title>
        <meta charset="utf-8" />
        <meta content="width=device-width,initial-scale=1" name="viewport" />
        <link
            rel="stylesheet"
            href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"
        />
        <link
            rel="stylesheet"
            href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css"
        />
        <link rel="stylesheet" href="/vendors/@form-validation/umd/styles/index.min.css" />
    </head>
    <body>
        <form id="demoForm" method="POST" class="form-inline">
            <div class="form-group" style="width: 40%">
                <input type="text" class="form-control" name="username" placeholder="Username" style="width: 100%" />
            </div>

            <div class="form-group" style="width: 40%">
                <input
                    type="password"
                    class="form-control"
                    name="password"
                    placeholder="Password"
                    style="width: 100%"
                />
            </div>

            <!-- Do NOT use name="submit" or id="submit" for the Submit button -->
            <button type="submit" class="btn btn-primary">Sign in</button>
        </form>

        <script src="/vendors/@form-validation/umd/bundle/popular.min.js"></script>
        <script src="/vendors/@form-validation/umd/plugin-bootstrap3/index.min.js"></script>

        <script>
            document.addEventListener('DOMContentLoaded', function (e) {
                FormValidation.formValidation(document.getElementById('demoForm'), {
                    fields: {
                        username: {
                            validators: {
                                notEmpty: {
                                    message: 'The username is required',
                                },
                                stringLength: {
                                    min: 6,
                                    max: 30,
                                    message: 'The username must be more than 6 and less than 30 characters long',
                                },
                                regexp: {
                                    regexp: /^[a-zA-Z0-9_]+$/,
                                    message: 'The username can only consist of alphabetical, number and underscore',
                                },
                            },
                        },
                        password: {
                            validators: {
                                notEmpty: {
                                    message: 'The password is required',
                                },
                            },
                        },
                    },
                    plugins: {
                        trigger: new FormValidation.plugins.Trigger(),
                        bootstrap3: new FormValidation.plugins.Bootstrap3(),
                        submitButton: new FormValidation.plugins.SubmitButton(),
                        icon: new FormValidation.plugins.Icon({
                            valid: 'fa fa-check',
                            invalid: 'fa fa-times',
                            validating: 'fa fa-refresh',
                        }),
                    },
                });
            });
        </script>
    </body>
</html>