我在html网站上编辑Simplemodal联系表单以创建表单。所有的编辑都很顺利，直到我遇到javascript导致获得未定义值的问题。我正在尝试添加一些字段并删除消息和复选框字段。第一个块是原始代码，我添加了第二个块：
if (!$('#contact-container #contact-name').val()) {
contact.message += 'First Name is required. ';
fail = true;
}
if (!$('#contact-container #contact-lname').val()) {
contact.message += 'Last Name is required. ';
fail = true;
}
第一个if语句工作正常，但第二个语句在处理js时有一个未定义的值。实际表单显示正常，但此处理不起作用。以下代码是我在文件中的代码：
<label for='contact-name'>First Name:</label>
<input type='text' id='contact-name' class='contact-input' name='name' tabindex='1001' />
<label for='contact-lname'>Last Name:</label>
<input type='text' id='contact-lname' class='contact-input' name='lname' tabindex='1002' />
原件完好无损，我刚刚添加了最后两行。任何帮助，将不胜感激。谢谢！
编辑：http://www.ericmmartin.com/projects/simplemodal-demos/我遇到问题的代码是contact.js，我在上面的修改过的行中遇到了问题。
编辑：这是通过网页激活Simplemodal的代码
<div id='container'>
<div id='content'>
<div id='contact-form'>
<h3><a href='#' class='contact'>Support the Cause!</a></h3>
</div>
</div>
</div>
修改后的contact.js位于下方并使用jquery和jquerySimplemodal（这两种方式都不影响代码处理的方式）。其他两个js文件是通过上面的链接。
jQuery(function ($) {
var contact = {
message: null,
init: function () {
$('#contact-form input.contact, #contact-form a.contact').click(function (e) {
e.preventDefault();
// load the contact form using ajax
$.get("data/contact.php", function(data){
// create a modal dialog with the data
$(data).modal({
closeHTML: "<a href='#' title='Close' class='modal-close'>x</a>",
position: ["15%",],
overlayId: 'contact-overlay',
containerId: 'contact-container',
onOpen: contact.open,
onShow: contact.show,
onClose: contact.close
});
});
});
},
open: function (dialog) {
// add padding to the buttons in firefox/mozilla
if ($.browser.mozilla) {
$('#contact-container .contact-button').css({
'padding-bottom': '2px'
});
}
// input field font size
if ($.browser.safari) {
$('#contact-container .contact-input').css({
'font-size': '.9em'
});
}
// dynamically determine height
var h = 280;
if ($('#contact-subject').length) {
h += 26;
}
if ($('#contact-cc').length) {
h += 22;
}
var title = $('#contact-container .contact-title').html();
$('#contact-container .contact-title').html('Loading...');
dialog.overlay.fadeIn(200, function () {
dialog.container.fadeIn(200, function () {
dialog.data.fadeIn(200, function () {
$('#contact-container .contact-content').animate({
height: h
}, function () {
$('#contact-container .contact-title').html(title);
$('#contact-container form').fadeIn(200, function () {
$('#contact-container #contact-name').focus();
// $('#contact-container .contact-cc').click(function () {
// var cc = $('#contact-container #contact-cc');
// cc.is(':checked') ? cc.attr('checked', '') : cc.attr('checked', 'checked');
// })
;
// fix png's for IE 6
if ($.browser.msie && $.browser.version < 7) {
$('#contact-container .contact-button').each(function () {
if ($(this).css('backgroundImage').match(/^url[("']+(.*\.png)[)"']+$/i)) {
var src = RegExp.$1;
$(this).css({
backgroundImage: 'none',
filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + src + '", sizingMethod="crop")'
});
}
});
}
});
});
});
});
});
},
show: function (dialog) {
$('#contact-container .contact-send').click(function (e) {
e.preventDefault();
// validate form
if (contact.validate()) {
var msg = $('#contact-container .contact-message');
msg.fadeOut(function () {
msg.removeClass('contact-error').empty();
});
$('#contact-container .contact-title').html('Sending...');
$('#contact-container form').fadeOut(200);
$('#contact-container .contact-content').animate({
height: '80px'},
function () {
$('#contact-container .contact-loading').fadeIn(200, function () {
$.ajax({
url: 'data/contact.php',
data: $('#contact-container form').serialize() + '&action=send',
type: 'post',
cache: false,
dataType: 'html',
success: function (data) {
$('#contact-container .contact-loading').fadeOut(200, function () {
$('#contact-container .contact-title').html('Thank you!');
msg.html(data).fadeIn(200);
});
},
error: contact.error
});
});
});
}
else {
if ($('#contact-container .contact-message:visible').length > 0) {
var msg = $('#contact-container .contact-message div');
msg.fadeOut(200, function () {
msg.empty();
contact.showError();
msg.fadeIn(200);
});
}
else {
$('#contact-container .contact-message').animate({
height: '30px'
}, contact.showError);
}
}
});
},
close: function (dialog) {
$('#contact-container .contact-message').fadeOut();
$('#contact-container .contact-title').html(''); <!--here-->
$('#contact-container form').fadeOut(200);
$('#contact-container .contact-content').animate({
height: 40
}, function () {
dialog.data.fadeOut(200, function () {
dialog.container.fadeOut(200, function () {
dialog.overlay.fadeOut(200, function () {
$.modal.close();
});
});
});
});
},
error: function (xhr) {
alert(xhr.statusText);
},
validate: function () {
contact.message = '';
var fail = false;
if (!$('#contact-name').val()) {
contact.message += 'First Name is required. ';
fail = true;
}
//#contact-container
if (!$('#contact-lname').val()) {
contact.message += 'Last Name is required. ';
fail = true;
}
var email = $('#contact-email').val();
if (!email) {
contact.message += 'Email is required. ';
fail = true;
}
else {
if (!contact.validateEmail(email)) {
contact.message += 'Email is invalid. ';
fail = true;
}
}
var zip = $('#contact-zip').val();
if (!zip) {
contact.message += '2' + zip + '2';
contact.message += 'ZIP is required. ';
fail = true;
}
else{
if (!contact.isValidZipCode(zip)) {
contact.message += 'ZIP is invalid. ';
fail = true;
}
}
var age = $('#contact-age').val();
if (!age){
contact.message += 'Age is required. ';
fail = true;
}
else{
if (!contact.validateAge(age)) {
contact.message += 'Age is invalid. ';
fail = true;
}
}
if (!$('#contact-message').val()) {
contact.message += 'Message is required.';
fail = true;
}
//if (contact.message.length > 0) {
// return true;
//}
else {
if (fail) return false;
else return true;
}
},
isValidZipCode: function (value) {
var re = /^\d{5}([\-]\d{4})?$/;
return (re.test(value));
},
validateAge: function (age) {
if (isNan(age)) return false;
var a = parseInt(age);
if (a > 0 && a < 100) return true;
else return false;
},
validateEmail: function (email) {
var at = email.lastIndexOf("@");
// Make sure the at (@) sybmol exists and
// it is not the first or last character
if (at < 1 || (at + 1) === email.length)
return false;
// Make sure there aren't multiple periods together
if (/(\.{2,})/.test(email))
return false;
// Break up the local and domain portions
var local = email.substring(0, at);
var domain = email.substring(at + 1);
// Check lengths
if (local.length < 1 || local.length > 64 || domain.length < 4 || domain.length > 255)
return false;
// Make sure local and domain don't start with or end with a period
if (/(^\.|\.$)/.test(local) || /(^\.|\.$)/.test(domain))
return false;
// Check for quoted-string addresses
// Since almost anything is allowed in a quoted-string address,
// we're just going to let them go through
if (!/^"(.+)"$/.test(local)) {
// It's a dot-string address...check for valid characters
if (!/^[-a-zA-Z0-9!#$%*\/?|^{}`~&'+=_\.]*$/.test(local))
return false;
}
// Make sure domain contains only valid characters and at least one period
if (!/^[-a-zA-Z0-9\.]*$/.test(domain) || domain.indexOf(".") === -1)
return false;
return true;
},
showError: function () {
$('#contact-container .contact-message')
.html($('<div class="contact-error"></div>').append(contact.message))
.fadeIn(200);
}
};
contact.init();});
这是由javascript调用以生成表单的PHP文件
$output = "<div style='display:none'>
<div class='contact-top'></div>
<div class='contact-content'>
<div class='contact-loading' style='display:none'></div>
<div class='contact-message' style='display:none'></div>
<form action='#' style='display:none'>
<label for='contact-name'>First Name:</label>
<input type='text' id='contact-name' class='contact-input' name='name' tabindex='1001' />
<label for='contact-lname'>Last Name:</label>
<input type='text' id='contact-lname' class='contact-input' name='lname' tabindex='1002' />
<label for='contact-email'>Email:</label>
<input type='text' id='contact-email' class='contact-input' name='email' tabindex='1003' />
<label for='contact-zip'>ZIP:</label>
<input type='text' id='contact-zip' class='contact-input' name='zip' tabindex='1004' />
<label for='contact-age'>Age:</label>
<input type='text' id='contact-age' class='contact-input' name='age' tabindex='1005' />
答案 0 :(得分：0)
试试这个选择器$('#contact-lname')而不是你的选择器。在我看来，您的#contact-lname不在#contact-container中，或者您的页面上有id="contact-container"或id="contact-lname"的容器。
答案 1 :(得分：0)
试试这个：
if ( $.trim($('input[name="name"]').val()) == "") {
contact.message += 'First Name is required. ';
fail = true;
}
if ( $.trim($('input[name="lname"]').val()) == "") {
contact.message += 'Last Name is required. ';
fail = true;
}
<击>
更新问题后，我假设您正在从contact.php文件加载表单元素。
$.get("data/contact.php", function(data){
然后您必须将您的联系表单验证到contact.php。
因为你的jQuery代码在刷新页面时加载了一次，并且当你的页面的所有DOM元素都被加载时，你的jquery代码无法检测你的表单元素，因为你正在加载来自$.get()的元素通过contact.php