在 Google 表单中验证电子邮件

Question

我正在使用 Google 表单来收集姓名和电子邮件地址以供订阅简报。电子邮件地址字段只是 Google 表单中的一个文本字段，因此它可以接受任何文本。

我的目标是验证电子邮件地址以确保已输入电子邮件地址而不是任何 ole 文本。下面是 Google 表单的代码。我可以添加什么代码来验证电子邮件地址字段？

<form action="http://spreadsheets.google.com/formResponse?key=pqbhTz7PIHum_4qKEdbUWVg&amp;embedded=true" method="post" target="hidden_iframe" onsubmit="submitted=true;">

<h1>Styled Google form with confirmation redirect</h1>
<div class="errorbox-good">
<div class="ss-form-entry"><label for="entry_1" class="ss-q-title">Your Name?
</label>
<label for="entry_1" class="ss-q-help"></label>
<input type="text" name="entry.1.single" value="" class="ss-q-short" id="entry_1"></div></div>
<br> <div class="errorbox-good">
<div class="ss-form-entry"><label for="entry_2" class="ss-q-title">Your Email?
</label>
<label for="entry_2" class="ss-q-help"></label>
<input type="text" name="entry.2.single" value="" class="ss-q-short" id="entry_2"></div></div>
<br> <div class="errorbox-good">
<div class="ss-form-entry"><label for="entry_3" class="ss-q-title">How easy was this tutorial?
</label>

<label for="entry_3" class="ss-q-help"></label>
<ul class="ss-choices"><li class="ss-choice-item"><input type="radio" name="entry.3.group" value="Very easy!" class="ss-form-input" id="group_3_1">
<label class="ss-choice-label" for="group_3_1">Very easy!</label></li> <li class="ss-choice-item"><input type="radio" name="entry.3.group" value="Pretty easy" class="ss-form-input" id="group_3_2">
<label class="ss-choice-label" for="group_3_2">Pretty easy</label></li> <li class="ss-choice-item"><input type="radio" name="entry.3.group" value="Not easy" class="ss-form-input" id="group_3_3">
<label class="ss-choice-label" for="group_3_3">Not easy</label></li>
</ul></div></div>
<br>
<input type="hidden" name="pageNumber" value="0">
<input type="hidden" name="backupCache" value="">
<input type="submit" name="submit" value="Submit">
</form>

Answer 1

您可以使用正则表达式在 jquery 中轻松验证电子邮件：

<script type="text/javascript">

function ValidateEmail(email) {
    var expr = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
    return expr.test(email);
};
$("#btnsubmit").on("click", function () {
    if (!ValidateEmail($("#entry_2").val())) {
        alert("Invalid email address.");
        return false;
    }
    else {
         // Valid email address
    }
});

</script>

并为您的提交按钮分配一个 id：

<input type="submit" name="submit" id='btnsubmit' value="Submit">

在您的表单上添加 Jquery 引用：

 <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>

DEMO