layui.use(‘upload‘)上传图片去除文件队列

   var UPLOAD_FILES;//上传文件队列集合
    layui.use('upload', function () {
        var $ = layui.jquery, upload = layui.upload;
        var uploadListIns = upload.render({
            elem: '#uploadFile'
            , multiple: true
            , accept: 'file' //普通文件
            , exts: 'pdf|jpg|png' //
            , auto: false//选择文件后不自动上传
            , size: 2*1024//最大2M
            , choose: function (obj) {
                UPLOAD_FILES = obj.pushFile();
                var formData = new FormData();
                for (var i in UPLOAD_FILES) {
                    formData.append("file", UPLOAD_FILES[i]);
                }
                clearFile();    //将所有文件删除
                $.ajax({
                    url: baseUrl + '/test/upload',
                    type: "POST",
                    data: formData,
                    dataType: 'json',
                    async: true,
                    cache: false,
                    contentType: false,
                    processData: false,
                    success: function (data) {
                        if (data.code == 200) {
                            layer.alert("上传成功！", {icon: 1});
                        } else {
                            layer.alert("上传失败！", {icon: 2});
                        }
                    }
                });
            }
        });
    })

//清空文件队列
function clearFile() {
    for(var x in UPLOAD_FILES){
        delete UPLOAD_FILES[x];
    }
}