$(function () {
                $(‘#btn1‘).click(function () {
                    var fm = new FormData();
                    fm.append(‘fffff‘, document.getElementById(‘ggggg‘).files[0]);
                    fm.append(‘usernmae‘,‘root‘);
                    
                    $.ajax({
                        url: "/ajax-upload/",
                        type: ‘POST‘,
                        data: fm,
                        processData: false,  // tell jQuery not to process the data
                        contentType: false,  // tell jQuery not to set contentType
                        success:function (arg) {
                            console.log(arg);
                        }
                    })
                })
            })

<form id="id_publish_form" action="/publish/" method="POST"
      enctype="multipart/form-data" target="ifr">
    {% csrf_token %}
    {{ publish_form.title }}
    <span class="label label-warning" id="id_alert_titile"></span><br>
    {{ publish_form.summary }}
    <span class="label label-warning" id="id_alert_summary"></span><br>
    <input type="file" class="form-control" name="picture_file"
           id="id_picture_file">
    <span class="label label-warning" id="id_alert_file"></span><br>
    {{ publish_form.nt_id }}
    <span class="label label-warning" id="id_alert_nt_id"></span><br>
</form>
{#onload 事件会在页面或图像加载完成后立即发生#}
<iframe id="ifr" name="ifr" onl oad="successBack();"
        style="display: none"></iframe>

//onload 执行的回调函数
function successBack() {
    var v = $(‘#ifr‘).contents().find(‘body‘).html();
    var obj = JSON.parse(v);
    if (obj.status) {
        location.href = ‘/‘;
    } else {
        if (obj.error) {
            $(‘#id_alert_file‘).text(obj.error);
        } else {
            $(‘#id_alert_titile‘).text(obj.data.title);
            $(‘#id_alert_summary‘).text(obj.data.summary);
            $(‘#id_alert_nt_id‘).text(obj.data.nt_id);
        }
    }
}