我正在用bootstrap 4和jQuery验证练习html， 我需要知道如何对特定元素或多个元素使用 errorPlacement？错误消息出现在输入中，但是，我希望它们以小的出现在它们下方
我更新了我的所有代码，因此您可以从PC上查看它，导入必要的链接，我在这里也有： https://codepen.io/CoudVan/project/editor/ZQyGjK：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>Material Design Bootstrap</title>
<!-- Bootstrap css -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- Material Design Bootstrap -->
<link href="https://cdnjs.cloudflare.com/ajax/libs/mdbootstrap/4.5.0/css/mdb.min.css" rel="stylesheet">
<!-- Css Personalizado -->
<style>
*{
padding: 0;
margin: 0;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
.user{
font-size: 1.8rem;
margin-right: 2%;
}
body{
background-color: rgba(236, 239, 243, 0.3); }
form div small{
color: red;
}
.miclase{
color: red;
}
</style>
</head>
<body>
<header>
<nav class="navbar navbar-expand-lg navbar-dark fixed-top primary-color">
<!-- Navbar brand -->
<a class="navbar-brand" href="#">Logo Chat</a>
<!-- Collapse button -->
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#NavbarPrincipal" aria-controls="NavbarPrincipal" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<!-- Collapsible content -->
<div class="collapse navbar-collapse" id="NavbarPrincipal">
<!-- Links -->
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Inicio
<span class="sr-only">Navbar de Pagina</span>
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Menu</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Acerca de</a>
</li>
</ul>
<!-- Links -->
<form class="form-inline">
<div class="md-form my-0">
<input class="form-control mr-sm-2" type="search" placeholder="Buscar" aria-label="Search">
</div>
<button class="btn btn-outline-white btn-md my-2 my-sm-0 ml-3" type="submit">Buscar</button>
</form>
</div>
<!-- Collapsible content -->
</nav>
</header>
<section>
<div class="container my-5">
<div class="row align-items-center">
<div class="col-md-7 my-4">
<div class="col-md-11 mb-5 mt-md-0 mt-5 text-center text-md-left animated fadeInLeft" data-wow-delay="0.3s">
<h1 class="display-4 font-weight-bold">Lorem ipsum</h1>
<hr class="hr-dark">
<h6 class="mb-3">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Rem repellendus quasi fuga nesciunt dolorum nulla magnam veniam sapiente, fugiat! Commodi sequi non animi ea dolor molestiae, quisquam iste.</h6>
<a class="btn btn-outline-blue">Learn more</a>
</div>
</div>
<div class="col-md-5">
<div class="card animated fadeInRight my-4 bg-transparent" data-wow-delay="0.3s">
<div class="card-body">
<form action="" id="formulario" name="formulario">
<div class="row py-4 d-flex justify-content-center">
<i class="user fas fa-user"></i>
<h3 class="">Registrate</h3>
</div>
<div class="form-row">
<div class="form-group col md-form">
<input type="text" class="form-control" id="nombres" name="nombres">
<label for="nombres" id="nom" class="font-weight-light mx-1">Nombres</label>
</div>
<div class="form-group col md-form">
<input type="text" class="form-control" id="apellidos" name="apellidos" >
<label for="apellidos" class="font-weight-light mx-1">Apellidos</label>
</div>
</div>
<div class="form-group md-form">
<input type="text" name="usuario" class="form-control" id="usuario">
<label for="usuario" class="font-weight-light">Usuario</label>
</div>
<div class="form-group md-form">
<input type="email" class="form-control" name="email" id="email">
<label for="email" class="font-weight-light">Correo Electrónico</label>
</div>
<div class="form-row">
<div class="form-group col md-form">
<input type="password" class="form-control" id="clave" name="clave">
<label for="clave" class="font-weight-light mx-1">Contraseña</label>
</div>
<div class="form-group col md-form">
<input type="password" class="form-control" id="clavecon" name="clavecon">
<label for="clavecon" class="font-weight-light mx-1">Confirmar Contraseña</label>
</div>
</div>
<div class="form-check col-12">
<input type="checkbox" class="form-check-input" id="terminos" name="terminos">
<label for="terminos" class="form-check-label grey-text">Acepta los <a href="#" class="font-weight-light">Términos y Condiciones</a></label>
</div>
<div class="text-center md-form">
<input type="submit" class="btn btn-primary btn-rounded" value="Registrate">
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- SCRIPTS -->
<!-- Fonts Awesome -->
<script defer src="https://use.fontawesome.com/releases/v5.0.13/js/all.js" integrity="sha384-xymdQtn1n3lH2wcu0qhcdaOpQwyoarkgLVxC/wZ5q7h9gHtxICrpcaSUfygqZGOe" crossorigin="anonymous"></script>
<!-- JQuery -->
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script
<!-- JQuery Validate -->
<script src="https://cdn.jsdelivr.net/npm/jquery-validation@1.17.0/dist/jquery.validate.js"></script>
<!-- Bootstrap tooltips -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<!-- Bootstrap core JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<!-- MDB core JavaScript -->
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mdbootstrap/4.5.0/js/mdb.min.js"></script>
<script>
new WOW().init();
</script>
<script>
$(document).ready(function(){
$("#formulario").validate({
rules:{
nombres:{
required:true,
maxlength:50
},
apellidos:{
required:true,
maxlength:50
},
usuario:{
required:true,
maxlength:30
},
email:{
required:true,
email:true,
maxlength:120
},
clave:{
required:true,
minlength:8,
maxlength:20
},
clavecon:{
required:true,
equalTo : "#clave"
},
terminos:{
required:true,
}
},
messages:{
nombres:{
required:'Ingresa tu Nombre',
maxlength:'Por favor, no ingreses más de 50 carácteres'
}
,
apellidos:{
required:'Ingresa tu Apellido',
maxlength:'Por favor, no ingreses más de 50 carácteres'
},
usuario:{
required:'Ingresa un nombre de Usuario',
maxlength:'Por favor, no ingreses más de 30 carácteres'
},
email:{
required:'Ingresa tu Correo Electrónico',
email:'Ingresa el formato correcto @',
maxlength:'Por favor, no ingreses más de 120 carácteres'
},
clave:{
required:'Ingresa una contraseña',
minlength:'Usa de 8 a 20 carácteres para tu contraseña',
maxlength:'Usa de 8 a 20 carácteres para tu contraseña'
},
clavecon:{
required:'Confirma tu contraseña',
equalTo : "#clave"
},
terminos:{
required:'Marca la casilla',
}
},
errorPlacement: function(error, element) {
(this is my dude, error the error messages appear in the inputs, and I want them below with a small)
}
});
});
</script>
</body>
</html>
像这样将errorPlacement与自定义 css 一起使用。
$('#myform').validate({
errorPlacement: function(label, element) {
label.addClass('custom');
label.insertAfter(element);
},
wrapper: 'span'
});
并使用custom为您的欲望风格编写css。
包含自定义类的代码段。
$('#myform').validate({
errorPlacement: function(label, element) {
label.addClass('custom');
label.insertAfter(element);
},
wrapper: 'span'
});.custom {
position: absolute;
top: 30px;
left: 0;
color: red;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<script src='https://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.0/jquery.validate.min.js'></script>
<form action='' method='post' id='myform'>
<input type='text' name='username' required />
<input type='submit' value='submit' />
</form>没有自定义类的代码段。
$('#myform').validate({
errorPlacement: function(label, element) {
label.addClass('custom');
label.insertAfter(element);
},
wrapper: 'span'
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<script src='https://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.0/jquery.validate.min.js'></script>
<form action='' method='post' id='myform'>
<input type='text' name='username' required />
<input type='submit' value='submit' />
</form>您可以追加标签元素并在验证时添加错误消息。
$('label#your_id').append('<small> This field is required. </small>');