JQuery ajaxForm：如果在 beforeSubmit 中从 DOM 中删除表单，则不会提交表单

发布于 2024-11-07 12:30:52 字数 887 浏览 0 评论 0原文

如果我在 beforeSubmit 或 beforeSend 中从 DOM 中删除表单（无论哪一个），我发现在 IE 和 FF 中，永远不会发出 http 请求。调用 jquery.form.js 中的 form.submit() 第 296 行，但没有发出 http 请求。但它在 chrome 中工作正常。

示例代码：

$('#form1').ajaxForm(
    {
        beforeSubmit: function(array, matched_set, options)
        {
            // this line removes #form1 from the DOM.
            // it is still available to jquery form plugin by means of closure
            // line 296 form.submit() in jquery.form.js is hit,
            // but IE and FF never emit http request. If I remove this line, it works.
            $('#jqm_window').html(waiting_page);
        },

铬：在此处输入图像描述火狐浏览器：使用 chrome 时，fiddler 会捕获 http 跟踪（但不会使用其他浏览器）：

原文

if I remove the form from the DOM in beforeSubmit or beforeSend (doesn't matter which one), I find that in both IE and FF, http request is never emitted. form.submit() line 296 in jquery.form.js is called, but no http request is emitted. It works correctly in chrome though.

Sample code:

$('#form1').ajaxForm(
    {
        beforeSubmit: function(array, matched_set, options)
        {
            // this line removes #form1 from the DOM.
            // it is still available to jquery form plugin by means of closure
            // line 296 form.submit() in jquery.form.js is hit,
            // but IE and FF never emit http request. If I remove this line, it works.
            $('#jqm_window').html(waiting_page);
        },

chrome:
enter image description here
firefox:

http trace is captured in fiddler when using chrome (but not with other browsers):

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油饼 2024-11-14 12:30:52

这不是 jquery 问题。如果在提交之前将表单从 DOM 中删除，则 IE、FF 不会提交表单。完整代码：

<html>
<head>
<script src="http://code.jquery.com/jquery-1.6.1.min.js">
</script>
<script>
$(document).ready(function()
{
    $('#test').click(function(e)
    {
        e.preventDefault();
        var form = $('#uploadForm')[0];
        // IE and FF will not submit the form if its removed from the DOM
        // Chrome doesn't care. you will get 404 error, as it submits the form to non-existent files.php
        form.parentNode.removeChild(form);
        form.submit();
    });
});
</script>
</head>
<body>
<form id="uploadForm" action="files.php" method="POST" enctype="multipart/form-data">
    File: <input type="file" name="file" />                
    <input type="submit" value="Submit" />
</form>
<a href="#" id="test">Click to test</a>
</body>
</html>

this is not a jquery issue. IE, FF don't submit form if its removed from DOM prior to submitting. Full code:

<html>
<head>
<script src="http://code.jquery.com/jquery-1.6.1.min.js">
</script>
<script>
$(document).ready(function()
{
    $('#test').click(function(e)
    {
        e.preventDefault();
        var form = $('#uploadForm')[0];
        // IE and FF will not submit the form if its removed from the DOM
        // Chrome doesn't care. you will get 404 error, as it submits the form to non-existent files.php
        form.parentNode.removeChild(form);
        form.submit();
    });
});
</script>
</head>
<body>
<form id="uploadForm" action="files.php" method="POST" enctype="multipart/form-data">
    File: <input type="file" name="file" />                
    <input type="submit" value="Submit" />
</form>
<a href="#" id="test">Click to test</a>
</body>
</html>

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