阿贾克斯PHP创建的窗体不提交 [英] Ajax PHP Created Form Not Submitting

问题描述

我有一组三个组合框（下拉菜单）是由PHP填充了从数据库中值。我已经改变了呼应提交按钮测试了这些组合框键入=提交，并加载PHP页面本身。他们没有工作，以这种方式顺利。

I have a set of three combo boxes (drop downs) that are populated by PHP with values from a database. I've tested these combo boxes by changing the echoed Submit button to type='submit', and loading the php page itself. They work without a hitch in this fashion.

不过，当我加载了Ajax页面，提交按钮拒绝触发Ajax功能。我已经通过创建一组静态组合框的HTML测试的页，并且在这种情况下，Ajax的触发顺利。然而，使用创建的PHP组合框不触发Ajax。

However, when I load the Ajax page, the submit button refuses to trigger the Ajax function. I have tested the page by creating a set of static combo boxes with html, and in this case the Ajax fires without a hitch. Yet using the PHP created combo boxes do not trigger the Ajax.

我希望有人能够说明什么问题是关于我的code的一些情况。

I'm hoping someone can shed some light on what the problem is concerning my code.

的HTML和放大器; 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);
    })
});

的PHP（虽然我不相信问题就出在这里）：

我仅列出一个组合框，以节省空间，因为它们都是一样的的

// 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。

Thanks very much for any help.

推荐答案

您插入的形式，从而覆盖到的提交事件绑定的元素。您插入新的表格后，你应该重新执行code结合的事件。

You insert the form and thereby overwrite the elements to which the submit-event is bound. You should re-execute the code that binds the events after you have inserted the new form.

有一个更清洁的方式将返回只包含修改后的信息JSON对象或XML，并且更新当前的形式，而不是插入一个全新的一个，但是这将是更多的工作。

A cleaner way would be to return a JSON object or XML containing just the modified information, and update your current form instead of inserting a whole new one, but that will be more work.

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).
});

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