我有一组三个组合框(下拉列表),由PHP填充数据库中的值。我已经通过将回显的Submit按钮更改为type='submit'
并加载php页面本身来测试这些组合框。他们以这种方式毫无障碍地工作。
但是,当我加载Ajax页面时,提交按钮拒绝触发Ajax功能。我已经通过创建一组带有html的静态组合框来测试页面,在这种情况下,Ajax会毫不费力地触发。然而,使用PHP创建的组合框不会触发Ajax。
我希望有人可以了解问题与我的代码有关。
HTML& jQuery的:
<div id="gallery_container">
<ul class="new_arrivals_gallery"></ul>
<div class="pagination"></div>
</div>
<script type="text/javascript" src="js/libs/jquery-1.6.1.min.js"></script>
<script>
$(document).ready(function() {
function loadData(imgFamily, imgClass, imgGender){
$.ajax
({
type: "GET",
url: "filter_test.php",
data: {imgFamily:imgFamily, imgClass:imgClass, imgGender:imgGender},
success: function(data) {
$("#gallery_container").html(data);
},
});
}
loadData(1); // For first time page load default results
//Bind keypress event to Ajax call
$('.filter').keypress(function(e) {
if(e.keyCode == 13) {
var imgFamily = $('#imgFamily').attr('value');
var imgClass = $('#imgClass').attr('value');
var imgGender = $('#imgGender').attr('value');
//Fetch the images
loadData(imgFamily, imgClass, imgGender);
}
});
//Bind the click event to Ajax call on submit
$("#submit").click(function(){
var imgFamily = $('#imgFamily').attr('value');
var imgClass = $('#imgClass').attr('value');
var imgGender = $('#imgGender').attr('value');
//Fetch the images
loadData(imgFamily, imgClass, imgGender);
})
});
PHP(虽然我不相信问题在于此处):
我只显示一个组合框以节省空间,因为它们都是相同的
// Queries for combo boxes
$imgFamily_query = "SELECT DISTINCT imgFamily FROM images WHERE $clause";
$imgClass_query = "SELECT DISTINCT imgClass FROM images WHERE $clause";
$imgGender_query = "SELECT DISTINCT imgGender FROM images WHERE $clause";
// Create the form and combo boxes
echo "<form name='refine' action=''>
<fieldset><legend>Refine Results</legend>";
// imgFamily combo box
if($imgFamily_result = mysql_query($imgFamily_query)) {
if($imgFamily_success = mysql_num_rows($imgFamily_result) > 0) {
// Start combo-box
echo "<label for='imgFamily' id='imgFamily_label'>Choose a family</label>\n
<select class='filter' id='imgFamily' name='imgFamily'>\n
<option value='1'></option>\n";
// For each item in the results...
while ($imgFamily_row = mysql_fetch_array($imgFamily_result))
// Add a new option to the combo-box
echo "<option value='$imgFamily_row[imgFamily]'>$imgFamily_row[imgFamily]</option>\n";
// End the combo-box
echo "</select>\n";
} else { echo "No results found."; }
} else { echo "Failed to connect to database."; }
// Add a submit button to the form
echo "</fieldset>
<fieldset><input type='button' name='submit' value='submit' id='submit'></fieldset>
</form>";
非常感谢您的帮助。
答案 0 :(得分:2)
这就是发生的事情(基本上是@GolezTrol所说的重新陈述):
$('.filter').keypress(function(e)
但该类尚未包含任何元素,因此不会发生任何绑定。$("#submit").click(function(){
具有相同的命运,我们还没有submit
id的元素。success
函数将表单元素添加到gallery_container
,但没有绑定。您需要做的是在将相应元素添加到dom时调用事件绑定函数;所以你应该在$("#gallery_container").html(data);
之后移动它们:
$(document).ready(function() {
function loadData(imgFamily, imgClass, imgGender){
$.ajax
({
type: "GET",
url: "filter_test.php",
data: {imgFamily:imgFamily, imgClass:imgClass, imgGender:imgGender},
success: function(data) {
$("#gallery_container").html(data);
//Bind keypress event to Ajax call
$('.filter').keypress(function(e) {
if(e.keyCode == 13) {
var imgFamily = $('#imgFamily').attr('value');
var imgClass = $('#imgClass').attr('value');
var imgGender = $('#imgGender').attr('value');
//Fetch the images
loadData(imgFamily, imgClass, imgGender);
}
});
//Bind the click event to Ajax call on submit
$("#submit").click(function(){
var imgFamily = $('#imgFamily').attr('value');
var imgClass = $('#imgClass').attr('value');
var imgGender = $('#imgGender').attr('value');
//Fetch the images
loadData(imgFamily, imgClass, imgGender);
});
}
});
}
loadData(1); // For first time page load default results
});
答案 1 :(得分:1)
您插入表单,从而覆盖提交事件绑定到的元素。在插入新表单后,您应该重新执行绑定事件的代码。
更简洁的方法是返回一个只包含修改过的信息的JSON对象或XML,并更新当前的表单而不是插入一个全新的表单,但这样做会更有效。
function loadData(imgFamily, imgClass, imgGender){
$.ajax
({
type: "GET",
url: "filter_test.php",
data: {imgFamily:imgFamily, imgClass:imgClass, imgGender:imgGender},
success: function(data) {
$("#gallery_container").html(data);
bindEvents(); // <---- Call it here
},
});
}
// Separate function
function bindEvents()
{
//Bind keypress event to Ajax call
$('.filter').keypress(function(e) {
if(e.keyCode == 13) {
var imgFamily = $('#imgFamily').attr('value');
var imgClass = $('#imgClass').attr('value');
var imgGender = $('#imgGender').attr('value');
//Fetch the images
loadData(imgFamily, imgClass, imgGender);
}
});
//Bind the click event to Ajax call on submit
$("#submit").click(function(){
var imgFamily = $('#imgFamily').attr('value');
var imgClass = $('#imgClass').attr('value');
var imgGender = $('#imgGender').attr('value');
//Fetch the images
loadData(imgFamily, imgClass, imgGender);
})
}
$(document).ready(function() {
loadData(1); // For first time page load default results
bindEvents(); // <---- And here (where your code originally was).
});