【发布时间】:2022-11-21 22:54:25
【问题描述】:
我正在尝试使用 bootstrap v5 学习 Javascript 和一些基本的 HTML。
我创建了一个登录表单,现在我尝试对必填字段进行一些验证。
我遵循了 Bootstrap 文档,我设法验证了除密码之外的所有输入字段,我想验证密码是否相同或者它们是否为空字段……但我被卡住了……不熟悉javascript。
我在 javascript 中的尝试:
let forms = document.querySelectorAll(".needs-validations");
let pass1 = document.getElementById("password1");
let pass2 = document.getElementById("password2");
Array.prototype.slice.call(forms).forEach( function (form){
form.addEventListener("submit",function (ev) {
// test password check....
if (pass1.value !== pass2.value || pass1.value === "" || pass2.value === "" ){
pass1.className = 'form-control is-invalid'
pass2.className = 'form-control is-invalid'
}
if (!form.checkValidity()){
ev.preventDefault()
ev.stopPropagation()
}
form.classList.add("was-validated")
})
})
但这里的结果是: 如您所见,密码始终有效,我不明白为什么。
我的 HTML:
<body class="body">
<div class="center">
<h4 class="title">Sign Up New User</h4>
<form name="signin-form" method="post" class="needs-validations" novalidate id="forms">
<div class="container">
<div class="row mt-3">
<div class="col">
<label for="name" class="form-label">Name</label>
<input type="text" class="form-control" id="name" placeholder="Name" required>
<div class="invalid-feedback">
Name can't be empty
</div>
</div>
<div class="col">
<label for="surname" class="form-label">Surname</label>
<input type="text" class="form-control" id="surname" placeholder="Surname" required>
<div class="invalid-feedback">
Surname can't be empty
</div>
</div>
</div>
<div class="row mt-3">
<div class="col">
<label for="email" class="form-label">Email</label>
<input type="email" class="form-control" id="email" placeholder="Email" required>
<div class="invalid-feedback">
invalid email
</div>
</div>
<div class="col-4 text-end">
<label for="email" class="form-label">Role</label>
<select class="form-select" id="validationCustom04" required>
<option selected disabled value="">Choose...</option>
<option>Captain</option>
<option>First Officer</option>
</select>
<div class="invalid-feedback">
Please select role
</div>
</div>
</div>
<div class="row mt-3 ">
<div class="col">
<label for="password1" class="form-label ">Password</label>
<input type="password" class="form-control" id="password1" placeholder="Password">
</div>
<div class="col">
<label for="password2" class="form-label ">Confirm Password</label>
<input type="password" class="form-control" id="password2" placeholder="Password">
<div class="invalid-feedback">
Password not match
</div>
</div>
</div>
<div class="row-cols-2 mt-3">
<button class="btn btn-primary" type="submit">Submit form</button>
</div>
</div>
</form>
</div>
<script src="/validation.js"></script>
<script src="/js/bootstrap.bundle.min.js" ></script>
</body>
【问题讨论】:
-
Array.prototype.slice.call(forms).forEach这样做的理由为零。forms.forEach()会工作。
标签: javascript html bootstrap-5