你好，我一直在使用 ajax 开发一个表单，但是当它归结为验证选择框时
问题 1)每次我将 job_est 值留空时，表单仍然会提交，就像已验证一样
问题2)我可以在ajax中使用异步吗 对不起我的写作能力
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(document).ready(function() {
//if submit button is clicked
$('#submit').click(function () {
//Get the data from all the fields
var name = $('input[name=name]');
var l_name = $('input[name=l_name]');
var phone = $('input[name=phone]');
var email = $('input[name=email]');
var postcode = $('input[name=postcode]');
var house_number = $('input[name=house_number]');
var street = $('input[name=street]');
var job_est = $('select[name=job_est]');
var comment = $('textarea[name=comment]');
//Simple validation to make sure user entered something
//If error found, add hightlight class to the text field
if (name.val()=='') {
name.addClass('hightlight');
return false;
} else name.removeClass('hightlight');
if (l_name.val()=='') {
l_name.addClass('hightlight');
return false;
} else l_name.removeClass('hightlight');
if (phone.val()=='') {
phone.addClass('hightlight');
return false;
} else phone.removeClass('hightlight');
if (email.val()=='') {
email.addClass('hightlight');
return false;
} else email.removeClass('hightlight');
if (postcode.val()=='') {
postcode.addClass('hightlight');
return false;
} else postcode.removeClass('hightlight');
if (house_number.val()=='') {
house_number.addClass('hightlight');
return false;
} else house_number.removeClass('hightlight');
if (street.val()=='') {
street.addClass('hightlight');
return false;
} else street.removeClass('hightlight');
if (job_est.val()=='') {
job_est.addClass('hightlight');
return false;
} else job_est.removeClass('hightlight');
if (comment.val()=='') {
comment.addClass('hightlight');
return false;
} else comment.removeClass('hightlight');
//organize the data properly
var data = 'name=' + name.val() + '&email=' + email.val() + '&phone=' +
phone.val() + '&comment=' + encodeURIComponent(comment.val());
//disabled all the text fields
$('.text').attr('disabled','true');
//show the loading sign
$('.loading').show();
//start the ajax
$.ajax({
//this is the php file that processes the data and send mail
url: "process.php",
//GET method is used
type: "GET",
//pass the data
data: data,
//Do not cache the page
cache: false,
//success
success: function (html) {
//if process.php returned 1/true (send mail success)
if (html==1) {
//hide the form
$('.form').fadeOut('slow');
//show the success message
$('.done').fadeIn('slow');
//if process.php returned 0/false (send mail failed)
} else alert('Sorry, unexpected error. Please try again later.');
}
});
//cancel the submit button default behaviours
return false;
});
});
</script>
<body>
<div class="block">
<div class="done">
<b>Thank you !</b> We have received your message.
</div>
<div class="form">
<form method="post" action="process.php">
<h4><u>Basic Contact Details</u></h4>
<div style="display: inline-block;" class="element">
<label>Name</label><input type="text" name="name"/>
</div>
<div style="display: inline-block;" class="element">
<label>Last Name: </label><input type="text" name="l_name"/>
</div>
<div class="element">
<label>Phone Number</label>
<input type="text" name="phone"/>
</div>
<div class="element">
<label>Email</label>
<input type="text" name="email"/>
</div>
<div style="display: inline-block;" class="element">
<label>Postcode: </label><input type="text" name="postcode" size="10" maxlength="10">
</div>
<div style="display: inline-block;" class="element">
<label>House Number: </label><input type="text" name="house_number" size="3">
</div>
<div style="display: inline-block;" class="element">
<label>Street Name: </label><input type="text" name="street">
</div>
<div style="display: inline-block;" class="element">
<label>County:</label>
<select>
<option name="select">--SELECT--</option>
<option name="bedford">Bedford</option>
<option name="dunstable">Dunstable</option>
<option name="luton">Luton</option>
</select>
</div>
<h4><u>Job Details</u></h4>
<div class="element">
<label>You Would Like To Book A:</label>
<select name="job_est">
<option name="select">--SELECT--</options>
<option name="job">Job</option>
<option name="est">Estimation</option>
</select>
</div>
<br/>
<div class="element">
<label>Service Your Booking:</label>
<select>
<option name="select">--SELECT--</option>
<option name="gardening">Gardening</option>
<option name="landscaping">Landscaping</option>
<option name="painting">Painting & Decorating</option>
<option name="decking">Decking & Fencing</option>
</select>
</div>
<br/>
<div class="element">
<label>Any Additional Information </label>
<textarea name="comment" class="text textarea" /></textarea>
</div>
<div class="element">
<input type="submit" id="submit"/>
<div class="loading"></div>
</div>
</form>
</div>
</div>
<div class="clear"></div>
最佳答案
您应该将选择框的name属性更改为value
<select name="job_est">
<option value="select">--SELECT--</options>
<option value="job">Job</option>
<option value="est">Estimation</option>
</select>
在你的 JavaScript 中，它应该是
if (job_est.val() == 'select') {
job_est.addClass('hightlight');
return false;
}
关于javascript - ajax 表单无法正常工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/25245411/