JQuery ajaxSubmit 函数不适用于 AngularJS HTML 页面中的表单

Question

我正在尝试使用 AngularJS 修补遗留图片上传代码。我有一个包含表单的 HTML 页面。以下是代码的 HTML 部分。

<form name="testForm" ng-init="testfunc()" novalidate>
    <div id="adduser_header">
        <div>
            <p><b>Add new user</b></p>
        </div>
    </div>
    <div id="userInfo">
        <div>
            <label>First Name</label>
            <input type="text" name="fname" required>
        </div>
        <div>
            <label>Last Name</label>
            <input type="text" name="lname" required>
        </div>
        <div>
            <form id="imageuploadForm"
                  action="/Projectname/jersey/ImageUploader/uploadimage"
                  method="POST" enctype="multipart/form-data"
                  accept-charset="utf-8" name="submitForm">
                <div>
                    <input id="imagename" type="text" readonly="readonly"
                           placeholder="Click browse to upload image">
                    <div id="uploadImgBtn" onclick="getImgFile()">
                        <span>Browse</span>
                    </div>
                </div>
                <input id="userID" name="userID" type="hidden">
                <input id="userImage" name="userImage" type="hidden">
                <input id="usertType" name="usertType" type="hidden">
                <p style="display: none;">this is your file input tag, so i hide it!
                i used the onchange event to fire the form submission</p>
                <div><input id="uploadimgfile" type="file" value="upload"
                            required="required" autofocus="autofocus" 
                            name="imgfile"
                            onchange="upImgFile(this, event)">
                </div>
                <input style="display: none;" type="submit" value="Send">
            </form>
        </div>
    </div>
    <div id="action_buttons">
        <input id="save_user" value="Add User" type="button"
               title="Add User"
               ng-click="submitRegistrationForm()"
               ng-disabled="testForm.$invalid">
        <a ui-sref="home-admin" ng-click="return()">
            <input id="canceltoreturn" value="Cancel" type="button" title="Cancel">
        </a>
    </div>
</form>

我可以毫无问题地浏览和 select 图片。当我尝试提交此 AngularJS 表单时，我的问题就开始了。当我单击 添加用户 时，我首先提交 AngularJS 名为 testForm 的表单，其中 returns 成功，ID 为用户。此 ID 传递给以下代码补丁 (legacy)：

uploadImage: function(id)
{
    if($('#imageuploadForm').find('#userImage').val() != "")
    {
        $("#imageuploadForm").find("#userID").val(id);

        var uploadstatus = null;
        $("#imageuploadForm").ajaxSubmit({

                success: function(data)
                {
                    uploadstatus = data;

                    if(uploadstatus == "uploaded")
                    {
                        console.log("Uploaded Successfully!");
                    }
                    if(uploadstatus == "updated")
                    {
                        console.log("Updated Successfully!");
                    }
                    else
                    if(uploadstatus == "problem" || uploadstatus == "notuploaded")
                    {
                        console.log("Some problem occurred!");
                    }
                    $("#imagename").val("");
                    $('#imageuploadForm').find('#userImage').val("");
                },
                error: function(xhr, ajaxOptions, thrownError)
                {
                    console.log(xhr.status);
                }
        });
    }
    else
    {
        alert("Please select some image to upload!")
    }
}

当我调试代码时，它一直到行。

$("#imageuploadForm").ajaxSubmit

但没有进一步发生。 action属性中提到的服务（/Projectname/jersey/ImageUploader/uploadimage）根本没有被调用

当表单完全在 HTML 中时，此 ajaxSubmit 运行良好。（此外，我正在为 ajaxSubmit 函数使用 jquery.form.js。）但是由于我以 AngularJS 的方式定制了代码，图像上传已停止工作。我在这里做错了什么？我无法理解。我该如何解决这个问题？

Answer 1

嵌套 <form> 个元素是非法的。

来自文档：

The HTML <form> element represents a document section containing interactive controls for submitting information.

Content categories: Flow content, palpable content

Permitted content: Flow content, but not containing <form> elements

Tag omission: None, both the starting and ending tag are mandatory.

Permitted parents: Any element that accepts flow content

有关详细信息，请参阅

MDN HTML Reference - <form> Element

JQuery ajaxSubmit 函数不适用于 AngularJS HTML 页面中的表单

JQuery ajaxSubmit function is not working for a form in an AngularJS HTML page

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