jquery.upload-1.0.2.js

/*
* jQuery.upload v1.0.2
*
* Copyright (c) 2010 lagos
* Dual licensed under the MIT and GPL licenses.
*
* http://lagoscript.org */
(function($) {

var uuid = 0;

$.fn.upload = function(url, data, callback, type) {
var self = this, inputs, checkbox, checked,
iframeName = 'jquery_upload' + ++uuid,
iframe = $('<iframe name="' + iframeName + '" style="position:absolute;top:-9999px;height:0px;width:0px;" />').appendTo('body'),
form = '<form target="' + iframeName + '" method="post"  style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px;display:inline "  enctype="multipart/form-data" />';

if ($.isFunction(data)) {
type = callback;
callback = data;
data = {};
}

checkbox = $('input:checkbox', this);
checked = $('input:checked', this);
form = self.wrapAll(form).parent('form').attr('action', url);

// Make sure radios and checkboxes keep original values
// (IE resets checkd attributes when appending)
checkbox.removeAttr('checked');
checked.attr('checked', true);

inputs = createInputs(data);
inputs = inputs ? $(inputs).appendTo(form) : null;

form.submit(function() {
iframe.load(function() {
var data = handleData(this, type),
checked = $('input:checked', self);

form.after(self).remove();
checkbox.removeAttr('checked');
checked.attr('checked', true);
if (inputs) {
inputs.remove();
}

setTimeout(function() {
iframe.remove();
if (type === 'script') {
$.globalEval(data);
}
if (callback) {
callback.call(self, data);
}
}, 0);
});
}).submit();

return this;
};

function createInputs(data) {
return $.map(param(data), function(param) {
return '<input type="hidden" name="' + param.name + '" value="' + param.value + '"/>';
}).join('');
}

function param(data) {
if ($.isArray(data)) {
return data;
}
var params = [];

function add(name, value) {
params.push({name:name, value:value});
}

if (typeof data === 'object') {
$.each(data, function(name) {
if ($.isArray(this)) {
$.each(this, function() {
add(name, this);
});
} else {
add(name, $.isFunction(this) ? this() : this);
}
});
} else if (typeof data === 'string') {
$.each(data.split('&'), function() {
var param = $.map(this.split('='), function(v) {
return decodeURIComponent(v.replace(/\+/g, ' '));
});

add(param[0], param[1]);
});
}

return params;
}

function handleData(iframe, type) {
var data, contents = $(iframe).contents().get(0);

if ($.isXMLDoc(contents) || contents.XMLDocument) {
return contents.XMLDocument || contents;
}
data = $(contents).find('body').html();
try{
switch (type) {
case 'xml':
data = parseXml(data);
break;
case 'json':
if(data.indexOf("pre")>0){
data=jQuery.parseJSON(jQuery(data).text());
}else{
eval("data = " + data);
}
//data = window.eval('(' + data + ')');
break;
}
}catch(e){
return '服务器异常';
}
return data;
}

function parseXml(text) {
if (window.DOMParser) {
return new DOMParser().parseFromString(text, 'application/xml');
} else {
var xml = new ActiveXObject('Microsoft.XMLDOM');
xml.async = false;
xml.loadXML(text);
return xml;
}
}

})(jQuery);