尽管包含脚本和以下文档，但引导验证不起作用

Question

尽管页面和样板布局中都有脚本，但我无法验证表单。我尝试将标签移动到不同的地方，但服务器端验证是唯一有效的部分。表单不会运行客户端验证。

<% layout('layouts/boilerplate') %> 
<div class="row">
    <h1 class="text-center">Create Artist Profile</h1>
    <div class="col-6 offset-3">
        <form action="/artists/new" method="POST" novalidate class="validated-form" enctype="multipart/form-data">
            <div class="mb-3">
                <label class="form-label" for="email">Email</label>
                <input class="form-control" type="email" id="email" name="email" placeholder="name@domain.com" required>
                <div class="valid-feedback">
                    Looks good!
                </div>
            </div>
            <div class="mb-3">
                <label for="formFile" class="form-label">Upload band photo</label>
                <input class="form-control" type="file" id="image" name="image" multiple="false">
              </div>
                <div class="mb-3">
                    <button class="btn btn-success">Create Profile</button>
                </div>
            <a href="/artists">All artists</a>
        </form>        
    </div>
</div>

这是我的 layouts/boilerplate.ejs 正文中的脚本标签

    <script>
        (function () {
        'use strict'

        bsCustomFileInput.init()

        // Fetch all the forms we want to apply custom Bootstrap validation styles to
        const forms = document.querySelectorAll('.validated-form')

        // Loop over them and prevent submission
        Array.from(forms)
            .forEach(function (form) {
                form.addEventListener('submit', function (event) {
                    if (!form.checkValidity()) {
                        event.preventDefault()
                        event.stopPropagation()
                    }

                    form.classList.add('was-validated')
                }, false)
            })
    })
    </script>

任何想法我在此表单中做错了什么？

Answer 1

您是否尝试过将表单类更改为“needs-validation”？

也试试这个代码

   (function() {
    'use strict';
    window.addEventListener('load', function() {
        
var forms = document.querySelectorAll('.validated-form')
       
        var validation = Array.prototype.filter.call(forms, function(form) {
            form.addEventListener('submit', function(event) {
                if (form.checkValidity() === false) {
                    event.preventDefault();
                    event.stopPropagation();
                }
                form.classList.add('was-validated');
            }, false);
        });
    }, false);
})();