jQuery error: TypeError: a is undefined in jquery-file-upload
jQuery error: TypeError: a is undefined in jquery-file-upload
我已将 jQuery-File-Upload 添加到我正在创建的就业应用程序中。我有文件上传和保存。但是，我在处理返回的 JSON 时遇到错误。该按钮没有清除 "abort" 并且脚本的其余部分失败。
我在 FireBug 中收到此错误报告：
TypeError: a is undefined
...rCase()},each:function(a,b,c){var d,e=0,f=a.length,g=r(a);if(c){if(g){for(;f>e;e...
返回JSON后：
[{"name":"New Upload Complete: a9chafa8d62591feca73c5227473d3d4307contact-mri.png","size":"16.88kB","type":"image\/png","delete_url":"\/ch\/upload","delete_type":"DELETE","url":"\/"}]
我欢迎任何建议或指导！
已编辑：
这是我用于 jQuery-file-upload:
的代码
<script src="/js/vendor/jquery.ui.widget.js"></script>
<!-- The Load Image plugin is included for the preview images and image resizing functionality -->
<script src="//blueimp.github.io/JavaScript-Load-Image/js/load-image.all.min.js"></script>
<!-- The Canvas to Blob plugin is included for image resizing functionality -->
<script src="//blueimp.github.io/JavaScript-Canvas-to-Blob/js/canvas-to-blob.min.js"></script>
<!-- The Iframe Transport is required for browsers without support for XHR file uploads -->
<script src="/js/jquery.iframe-transport.js"></script>
<!-- The basic File Upload plugin -->
<script src="/js/jquery.fileupload.js"></script>
<!-- The File Upload processing plugin -->
<script src="/js/jquery.fileupload-process.js"></script>
<!-- The File Upload image preview & resize plugin -->
<script src="/js/jquery.fileupload-image.js"></script>
<!-- The File Upload audio preview plugin -->
<script src="/js/jquery.fileupload-audio.js"></script>
<!-- The File Upload video preview plugin -->
<script src="/js/jquery.fileupload-video.js"></script>
<!-- The File Upload validation plugin -->
<script src="/js/jquery.fileupload-validate.js"></script>
<script>
/*jslint unparam: true, regexp: true */
/*global window, $ */
$(function () {
'use strict';
// Change this to the location of your server-side upload handler:
var uploadurl = "/upload/index/token/<?php echo $this->token; ?>" ,
uploadButton = $('<button/>')
.addClass('button button-primary')
.prop('disabled', true)
.text('Processing...')
.on('click', function () {
var $this = $(this),
data = $this.data();
$this
.off('click')
.text('Abort')
.on('click', function () {
$this.remove();
data.abort();
});
data.submit().always(function () {
$this.remove();
});
});
$('#fileupload').fileupload({
url: uploadurl,
dataType: 'json',
autoUpload: false,
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,
maxFileSize: 999000,
// Enable image resizing, except for Android and Opera,
// which actually support image resizing, but fail to
// send Blob objects via XHR requests:
disableImageResize: /Android(?!.*Chrome)|Opera/
.test(window.navigator.userAgent),
previewMaxWidth: 100,
previewMaxHeight: 100,
previewCrop: true
}).on('fileuploadadd', function (e, data) {
data.context = $('<div/>').appendTo('#files');
$.each(data.files, function (index, file) {
var node = $('<p/>')
.append($('<span/>').text(file.name));
if (!index) {
node
.append('<br>')
.append(uploadButton.clone(true).data(data));
}
node.appendTo(data.context);
});
}).on('fileuploadprocessalways', function (e, data) {
var index = data.index,
file = data.files[index],
node = $(data.context.children()[index]);
if (file.preview) {
node
.prepend('<br>')
.prepend(file.preview);
}
if (file.error) {
node
.append('<br>')
.append($('<span class="text-danger"/>').text(file.error));
}
if (index + 1 === data.files.length) {
data.context.find('button')
.text('Upload')
.prop('disabled', !!data.files.error);
}
}).on('fileuploadprogressall', function (e, data) {
var progress = parseInt(data.loaded / data.total * 100, 10);
$('#progress .progress-bar').css(
'width',
progress + '%'
);
}).on('fileuploaddone', function (e, data) {
$.each(data.result.files, function (index, file) {
if (file.url) {
var link = $('<a>')
.attr('target', '_blank')
.prop('href', file.url);
$(data.context.children()[index])
.wrap(link);
} else if (file.error) {
var error = $('<span class="text-danger"/>').text(file.error);
$(data.context.children()[index])
.append('<br>')
.append(error);
}
});
}).on('fileuploadfail', function (e, data) {
$.each(data.files, function (index) {
var error = $('<span class="text-danger"/>').text('File upload failed.');
$(data.context.children()[index])
.append('<br>')
.append(error);
});
}).prop('disabled', !$.support.fileInput)
.parent().addClass($.support.fileInput ? undefined : 'disabled');
});
</script>
明白了：https://github.com/blueimp/jQuery-File-Upload/wiki/Zend-framework 的上传脚本示例输出 JSON，没有必要的 "Files" 包装器。
这个JSON输出：
[{"name":"New Upload Complete -quote.png","size":"1.26kB","url":"\/applicant\/a9chafa8d62591feca73c5227473d3d43077\/quote.png","type":"image\/png","delete_url":"\/applicant\/a9chafa8d62591feca73c5227473d3d43077\/quote.png","delete_type":"DELETE"}]
需要：
{"files":[{"url":"/1343777734/size.png","thumbnailUrl":"/1343777734/size.png.80x80.png","name":"tumor-size.png","type":"image/png","size":12714,"deleteUrl":"/1343777734/size.png","deleteType":"DELETE"}]}
然后我更改了这个 PHP:
<?php
header('Pragma: no-cache');
header('Cache-Control: private, no-cache');
header('Content-Disposition: inline; filename="files.json"');
header('X-Content-Type-Options: nosniff');
header('Vary: Accept');
echo json_encode($datas);
?>
更改为：
<?php
header('Pragma: no-cache');
header('Cache-Control: private, no-cache');
header('Content-Disposition: inline; filename="files.json"');
header('X-Content-Type-Options: nosniff');
header('Vary: Accept');
echo "{\"files\":". json_encode($datas). "}";
?>
我已将 jQuery-File-Upload 添加到我正在创建的就业应用程序中。我有文件上传和保存。但是，我在处理返回的 JSON 时遇到错误。该按钮没有清除 "abort" 并且脚本的其余部分失败。
我在 FireBug 中收到此错误报告：
TypeError: a is undefined
...rCase()},each:function(a,b,c){var d,e=0,f=a.length,g=r(a);if(c){if(g){for(;f>e;e...
返回JSON后：
[{"name":"New Upload Complete: a9chafa8d62591feca73c5227473d3d4307contact-mri.png","size":"16.88kB","type":"image\/png","delete_url":"\/ch\/upload","delete_type":"DELETE","url":"\/"}]
我欢迎任何建议或指导！
已编辑： 这是我用于 jQuery-file-upload:
的代码<script src="/js/vendor/jquery.ui.widget.js"></script>
<!-- The Load Image plugin is included for the preview images and image resizing functionality -->
<script src="//blueimp.github.io/JavaScript-Load-Image/js/load-image.all.min.js"></script>
<!-- The Canvas to Blob plugin is included for image resizing functionality -->
<script src="//blueimp.github.io/JavaScript-Canvas-to-Blob/js/canvas-to-blob.min.js"></script>
<!-- The Iframe Transport is required for browsers without support for XHR file uploads -->
<script src="/js/jquery.iframe-transport.js"></script>
<!-- The basic File Upload plugin -->
<script src="/js/jquery.fileupload.js"></script>
<!-- The File Upload processing plugin -->
<script src="/js/jquery.fileupload-process.js"></script>
<!-- The File Upload image preview & resize plugin -->
<script src="/js/jquery.fileupload-image.js"></script>
<!-- The File Upload audio preview plugin -->
<script src="/js/jquery.fileupload-audio.js"></script>
<!-- The File Upload video preview plugin -->
<script src="/js/jquery.fileupload-video.js"></script>
<!-- The File Upload validation plugin -->
<script src="/js/jquery.fileupload-validate.js"></script>
<script>
/*jslint unparam: true, regexp: true */
/*global window, $ */
$(function () {
'use strict';
// Change this to the location of your server-side upload handler:
var uploadurl = "/upload/index/token/<?php echo $this->token; ?>" ,
uploadButton = $('<button/>')
.addClass('button button-primary')
.prop('disabled', true)
.text('Processing...')
.on('click', function () {
var $this = $(this),
data = $this.data();
$this
.off('click')
.text('Abort')
.on('click', function () {
$this.remove();
data.abort();
});
data.submit().always(function () {
$this.remove();
});
});
$('#fileupload').fileupload({
url: uploadurl,
dataType: 'json',
autoUpload: false,
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,
maxFileSize: 999000,
// Enable image resizing, except for Android and Opera,
// which actually support image resizing, but fail to
// send Blob objects via XHR requests:
disableImageResize: /Android(?!.*Chrome)|Opera/
.test(window.navigator.userAgent),
previewMaxWidth: 100,
previewMaxHeight: 100,
previewCrop: true
}).on('fileuploadadd', function (e, data) {
data.context = $('<div/>').appendTo('#files');
$.each(data.files, function (index, file) {
var node = $('<p/>')
.append($('<span/>').text(file.name));
if (!index) {
node
.append('<br>')
.append(uploadButton.clone(true).data(data));
}
node.appendTo(data.context);
});
}).on('fileuploadprocessalways', function (e, data) {
var index = data.index,
file = data.files[index],
node = $(data.context.children()[index]);
if (file.preview) {
node
.prepend('<br>')
.prepend(file.preview);
}
if (file.error) {
node
.append('<br>')
.append($('<span class="text-danger"/>').text(file.error));
}
if (index + 1 === data.files.length) {
data.context.find('button')
.text('Upload')
.prop('disabled', !!data.files.error);
}
}).on('fileuploadprogressall', function (e, data) {
var progress = parseInt(data.loaded / data.total * 100, 10);
$('#progress .progress-bar').css(
'width',
progress + '%'
);
}).on('fileuploaddone', function (e, data) {
$.each(data.result.files, function (index, file) {
if (file.url) {
var link = $('<a>')
.attr('target', '_blank')
.prop('href', file.url);
$(data.context.children()[index])
.wrap(link);
} else if (file.error) {
var error = $('<span class="text-danger"/>').text(file.error);
$(data.context.children()[index])
.append('<br>')
.append(error);
}
});
}).on('fileuploadfail', function (e, data) {
$.each(data.files, function (index) {
var error = $('<span class="text-danger"/>').text('File upload failed.');
$(data.context.children()[index])
.append('<br>')
.append(error);
});
}).prop('disabled', !$.support.fileInput)
.parent().addClass($.support.fileInput ? undefined : 'disabled');
});
</script>
明白了：https://github.com/blueimp/jQuery-File-Upload/wiki/Zend-framework 的上传脚本示例输出 JSON，没有必要的 "Files" 包装器。
这个JSON输出：
[{"name":"New Upload Complete -quote.png","size":"1.26kB","url":"\/applicant\/a9chafa8d62591feca73c5227473d3d43077\/quote.png","type":"image\/png","delete_url":"\/applicant\/a9chafa8d62591feca73c5227473d3d43077\/quote.png","delete_type":"DELETE"}]
需要：
{"files":[{"url":"/1343777734/size.png","thumbnailUrl":"/1343777734/size.png.80x80.png","name":"tumor-size.png","type":"image/png","size":12714,"deleteUrl":"/1343777734/size.png","deleteType":"DELETE"}]}
然后我更改了这个 PHP:
<?php
header('Pragma: no-cache');
header('Cache-Control: private, no-cache');
header('Content-Disposition: inline; filename="files.json"');
header('X-Content-Type-Options: nosniff');
header('Vary: Accept');
echo json_encode($datas);
?>
更改为：
<?php
header('Pragma: no-cache');
header('Cache-Control: private, no-cache');
header('Content-Disposition: inline; filename="files.json"');
header('X-Content-Type-Options: nosniff');
header('Vary: Accept');
echo "{\"files\":". json_encode($datas). "}";
?>