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我创建了一个产品页面，在两个不同的地方人们可以输入他们的电子邮件。如果他们输入格式正确的电子邮件，我希望他们得到验证信息，如果他们输入了错误格式的电子邮件，我希望他们收到错误信息。如何使用Javascript进行验证和错误消息？
我的教授是有我们连接到他建在Ruby中，用来验证这对我们的Rails的数据库，并且已经成功连接到，但我们需要使用JavaScript来设置上出现错误和验证消息屏幕为用户。出于某种原因，我似乎无法让他们通过，我想知道是否有人对我在哪搞乱了什么有什么建议。
我的教授说，如果我们陷入困境，在这里寻求帮助很好，而且我真的陷入了困境。我一直在玩几个小时的选项，似乎无法解决任何问题。任何帮助将非常感激，谢谢！
这是它应该看，当你提交的格式不正确类似电子邮件：
这是当你提交的格式不正确的电子邮件会发生什么（没有出现在所有）：
这是它应该看在您提交格式正确的电子邮件，如：
这是当你提交一个正确格式的电子邮件会发生什么（没有出现在所有）：
这是在执行console.log会发生什么，当我点击在按钮上。
$(document).ready(function() {
$('form').submit(function(event) {
var formData = $(this).serialize();
$.ajax({
type : 'POST',
url : 'https://web2-product-page/herokuapp.com/subscribers',
data : formData,
dataType : 'json'
}).done(function(data) {
console.log(data);
$('.confirmation').fadeIn();
$('.error-message').text("");
$('input[name=email]').val("");
}).fail(function(data) {
console.log(data);
var errorMessage = JSON.parse(data.responseText).email[0];
$('.error-message').text(errorMessage);
$('.confirmation').hide();
});
event.preventDefault();
});
});* {
box-sizing: border-box;
}
@font-face {
font-family: 'gilroysemibold';
src: url('radomir_tinkov_-_gilroy-semibold-webfont.woff2') format('woff2'),
url('radomir_tinkov_-_gilroy-semibold-webfont.woff') format('woff');
font-weight: normal;
font-style: normal;
}
body {
margin: 0px;
}
#calltoaction {
background-image: url("calltoactionbackground.jpg");
background-size: 100%;
background-repeat: no-repeat;
display: inline-block;
height: 500px;
padding-bottom: 100px;
padding-left: 70px;
padding-right: 70px;
padding-top: 100px;
text-align: center;
width: 100%;
}
#calltoaction p {
margin: auto;
padding-top: 25px;
padding-bottom: 55px;
width: 500px;
}
.clearfix:before,
.clearfix:after {
content: "";
display: table;
}
.clearfix:after {
clear: both;
}
.clearfix {
zoom: 1; /* ie 6/7 */
}
.confirmation {
display: none;
}
.error-message {
display: none;
}
#functions {
background-color: #FFFFFF;
display: block;
height: 1080px;
margin: auto;
padding-top: 100px;
width: 100%;
}
#functions p {
color: #62CE9C;
}
h1 {
color: #FFFFFF;
font-family: 'gilroysemibold';
font-size: 36px;
font-weight: lighter;
}
h2 {
color: #62CE9C;
font-family: 'gilroysemibold';
font-size: 30px;
font-weight: lighter;
}
h3 {
color: #00AF78;
font-family: Open Sans;
font-size: 18px;
line-height: 10px;
}
.hashtag {
color: \t #00AF78;
font-weight: bold;
}
#hero {
background-color: #62CE9C;
height: 650px;
margin: 0px;
padding-bottom: 100px;
padding-left: 120px;
padding-right: 120px;
padding-top: 100px;
width: 100%;
}
#herocontent {
margin: auto;
width: 900px;
}
#herotext {
float: left;
width: 600px;
}
#hero h1 {
width: 470px;
}
#hero img {
display: block;
float: right;
}
#hero p {
padding-top: 30px;
padding-bottom: 40px;
width: 500px;
}
input, select, textarea{
color: #62CE9C;
}
textarea:focus, input:focus {
color: #62CE9C;
}
input::-webkit-input-placeholder {
color: #62CE9C !important;
}
input:-moz-placeholder { /* Firefox 18- */
color: #62CE9C !important;
}
input::-moz-placeholder { /* Firefox 19+ */
color: #62CE9C !important;
}
input:-ms-input-placeholder {
color: #62CE9C !important;
}
p {
color: #FFFFFF;
font-family: Open Sans;
font-size: 18px;
line-height: 26px;
}
#save {
align-items: center;
display: block;
margin: auto;
width: 800px;
}
#savefood {
float: right;
margin: auto;
}
#savefoodimage {
float: right;
}
#savefoodtext {
float: right;
height: 300px;
margin-right: 30px;
padding-top: 30px;
width: 290px;
}
#savemoney {
float: left;
margin: auto;
}
#savemoneyimage {
float: left;
}
#savemoneytext {
float: left;
height: 300px;
margin-left: 30px;
padding-top: 30px;
width: 330px;
}
#savetime {
float: left;
margin: auto;
}
#savetimeimage {
float: left;
}
#savetimetext {
float: left;
height: 300px;
margin-left: 30px;
padding-top: 30px;
width: 330px;
}
#searchbar {
background-color: #FFFFFF;
border: none;
border-radius: 8px;
font-size: 18px;
height: 40px;
padding-left: 15px;
width: 300px;
}
#searchbutton {
background-color: #28C787;
border: none;
border-radius: 8px;
color: #FFFFFF;
font-size: 18px;
height: 40px;
margin-left: 20px;
width: 180px;
}
#searchbutton:hover {
background-color: #00BE8B;
}
#tweetone {
background-color: #FFFFFF;
border-radius: 25px;
height: 208px;
margin: auto;
margin-top: 60px;
padding-bottom: 30px;
padding-left: 25px;
padding-right: 25px;
padding-top: 30px;
width: 650px;
}
#tweetone img {
float: left;
height: 150px;
padding-top: 10px;
width: 150px;
}
#tweetonetext {
float: left;
padding-left: 15px;
width: 450px;
}
#tweettwo {
background-color: #FFFFFF;
border-radius: 25px;
height: 208px;
margin: auto;
margin-top: 60px;
padding-bottom: 30px;
padding-left: 25px;
padding-right: 25px;
padding-top: 30px;
width: 650px;
}
#tweettwo img {
float: left;
padding-top: 10px;
}
#tweettwotext {
float: left;
padding-left: 15px;
width: 400px;
}
#tweetthree {
background-color: #FFFFFF;
border-radius: 25px;
height: 208px;
margin: auto;
margin-top: 60px;
padding-bottom: 30px;
padding-left: 25px;
padding-right: 25px;
padding-top: 30px;
width: 650px;
}
#tweetthree img {
float: left;
padding-top: 10px;
}
#tweetthreetext {
float: left;
padding-left: 15px;
width: 450px;
}
ul {
list-style-type: none;
}
#vocational {
background-color: #62CE9C;
display: inline-block;
height: 1120px;
padding-bottom: 100px;
padding-left: 70px;
padding-right: 70px;
padding-top: 100px;
width: 100%;
}
#vocational h1 {
margin: auto;
text-align: center;
margin-bottom: 0px;
width: 500px;
}
#vocational p {
color: #62CE9C;
display: inline-block;
}<!DOCTYPE html>
<html>
<head>
<link href="css/main.css" rel="stylesheet"/>
<link href="https://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="js/main.js"></script>
</head>
<body>
<div class="container clearfix" id="hero">
<div id="herocontent">
<div id="herotext">
<h1>Make the Most of your Food With Pantree</h1>
<p>Pantree for iOS lets you search for recipes based on the ingredients you already have in your home.</p>
<form id="subscribe" method="post" action="https://web-2-product-page.herokuapp.com/subscribers">
<input id="searchbar" type="text" name="email" placeholder="[email protected]">
<input id="searchbutton" type="submit" value="Get Early Access">
<p class="confirmation">Thank you!</p>
<p class="error-message">Incorrect E-mail Address.</p>
</form>
</div>
<img src="images/phone.png"/>
</div>
</div>
<div id="functions">
<div id=save>
<div id="savemoney">
<img id="savemoneyimage" src="images/savemoney.png"/>
<div id="savemoneytext">
<h2>Save Money</h2>
<p>Pantree finds you recipes containing ingredients you already have in your home, saving you from unecessary trips to the grocery store.</p>
</div>
</div>
<div id="savefood">
<img id="savefoodimage" src="images/savefood.png"/>
<div id="savefoodtext">
<h2>Save Food</h2>
<p>Pantree keeps track of expiration dates, alerting you when food will go stale so you can use it before it goes bad.</p>
</div>
</div>
<div id="savetime">
<img id="savetimeimage" src="images/savetime.png"/>
<div id="savetimetext">
<h2>Save Time</h2>
<p>Pantree's built-in kitchen organizing system helps you monitor all of the food in your home, so figuring out what food you have is quick & easy.</p>
</div>
</div>
</div>
</div>
<div id="vocational">
<h1>These Folks Could Use Pantree Every Day</h1>
<ul>
<li>
<div id="tweetone">
<img src="images/tweetone.png"/>
<div id="tweetonetext">
<h3>Kat</h3>
<h3>@devicat</h3>
<p>I have no idea what to make for dinner. I am so bad at this game. <span class="hashtag">#adulting</span></p>
</div>
</div>
</li>
<li>
<div id="tweettwo">
<img src="images/tweettwo.png"/>
<div id="tweettwotext">
<h3>Jack Falahee</h3>
<h3>@RestingPlatypus</h3>
<p>Dear Mom, How do I organize my kitchen? Love, me</p>
</div>
</div>
</li>
<li>
<div id="tweetthree">
<img src="images/tweetthree.png"/>
<div id="tweetthreetext">
<h3>mason ryan</h3>
<h3>@MasonTheManiac</h3>
<p>Something in my fridge smells really bad.... <span class="hashtag">#cantfindit</span></p>
</div>
</div>
</li>
</ul>
</div>
<div id="calltoaction">
<h1>Manage your Kitchen, Effortlessly</h1>
<p>Pantree makes it easy to find recipes, keep track of food, and organize your kitchen.</p>
<form id="subscribe" method="post" action="https://web-2-product-page.herokuapp.com/subscribers">
<input id="searchbar" type="text" name="email" placeholder="[email protected]">
<input id="searchbutton" type="submit" value="Get Early Access">
<p class="confirmation">Thank you!</p>
<p class="error-message">Incorrect E-mail Address.</p>
</form>
</div>
</body>
</html>
如果您准确地发布了您尝试过的内容，以及您获得的结果和期望的结果会更好;如果你的问题是关于JS功能的话，CSS通常不需要发布。另外，来自AJAX调用的JSON响应对于格式正确的电子邮件和格式错误的电子邮件来说是什么样的？请记住，AJAX调用中的'.fail（）'回调是指当对指定的URL调用失败时（即返回HTTP错误代码） - 而您可能需要检查JSON以获得对电子邮件的实际评估用户提交。 – Stevangelista
实际上，CSS可以在这里帮助，因为问题是关于页面的显示方式。 –
你的jQuery似乎没问题。你知道你的Ajax调用是否成功吗？ （如果它被错误配置，你将永远得到你的“失败”条件）http://stackoverflow.com/questions/21897398/how-do-i-debug-jquery-ajax-calls –