itoo在线编辑——mongo学习1

    <div style="padding-top: 8px;"><p class="ui-tips">上传头像会自动生成头像缩略图片，您也可以拖动大图的裁剪区域，调整缩图内容。</p><p class="ui-tips">支持JPG、GIF、PNG等图片格式推荐尺寸：180*180像素</p><input type="file" name="fileCoursePoster" οnchange="uploadCoursePoster();" id="fileCoursePoster"/><span id="errorCoursePoster" style="color: red; display: none;">请上传图片！</span><input type="hidden" id="imageType" name="imageType"></div><code><span style="color:#93a1a1;"><span></span></span><span style="color:#48484c;"><span></span></span><span style="color:#93a1a1;"><span></span></span></code>

jQuery.extend({ {createUploadIframe: function(id, uri)
{
//create framevar frameId ='jUploadFrame'+ id;var iframeHtml ='<iframe id="'+ frameId +'" name="'+ frameId +'" style="position:absolute; top:-9999px; left:-9999px"';
if(window.ActiveXObject)
{
if(typeof uri=='boolean'){iframeHtml +=' src="'+'javascript:false'+'"';}
elseif(typeof uri=='string'){iframeHtml +=' src="'+ uri +'"';}
}iframeHtml +=' />';jQuery(iframeHtml).appendTo(document.body);return jQuery('#'+ frameId).get(0);
},createUploadForm: function(id,fileElementId,data,fileElement)
{
//create form	var formId ='jUploadForm'+ id;var fileId ='jUploadFile'+ id;var form = jQuery('<form  action="" method="POST" name="'+ formId +'" id="'+ formId +'" enctype="multipart/form-data"></form>');
if(data)
{
for(var i in data)
{jQuery('<input type="hidden" name="'+ i +'" value="'+ data[i]+'" />').appendTo(form);
}
}var oldElement;
if(fileElement ==null)oldElement = jQuery('#'+ fileElementId);
elseoldElement = fileElement;var newElement = jQuery(oldElement).clone();jQuery(oldElement).attr('id', fileId);jQuery(oldElement).before(newElement);jQuery(oldElement).appendTo(form);
//set attributesjQuery(form).css('position','absolute');jQuery(form).css('top','-1200px');jQuery(form).css('left','-1200px');jQuery(form).appendTo('body');
return form;
},ajaxFileUpload: function(s){
// TODO introduce global settings, allowing the client to modify them for all requests, not only timeout		s = jQuery.extend({}, jQuery.ajaxSettings, s);var id =newDate().getTime()var form = jQuery.createUploadForm(id, s.fileElementId,(typeof(s.data)=='undefined'?false:s.data),s.fileElement);var io = jQuery.createUploadIframe(id, s.secureuri);var frameId ='jUploadFrame'+ id;var formId ='jUploadForm'+ id;
// Watch for a new set of requests
if( s.global &&! jQuery.active++)
{jQuery.event.trigger("ajaxStart");
}var requestDone =false;
// Create the request objectvar xml ={}
if( s.global )jQuery.event.trigger("ajaxSend",[xml, s]);
// Wait for a response to come backvar uploadCallback = function(isTimeout)
{var io = document.getElementById(frameId);
try
{
if(io.contentWindow)
{xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerText:null;xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
}elseif(io.contentDocument)
{xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerText:null;xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
}
}catch(e)
{jQuery.handleError(s, xml,null, e);
}
if( xml || isTimeout =="timeout")
{requestDone =true;var status;
try{status = isTimeout !="timeout"?"success":"error";
// Make sure that the request was successful or notmodified
if( status !="error")
{
// process the data (runs the xml through httpData regardless of callback)var data = jQuery.uploadHttpData( xml, s.dataType );
// If a local callback was specified, fire it and pass it the data
if( s.success )s.success( data, status );
// Fire the global callback
if( s.global )jQuery.event.trigger("ajaxSuccess",[xml, s]);
}elsejQuery.handleError(s, xml, status);
}catch(e)
{status ="error";jQuery.handleError(s, xml, status, e);
}// The request was completed
if( s.global )jQuery.event.trigger("ajaxComplete",[xml, s]);// Handle the global AJAX counter
if( s.global &&!--jQuery.active )jQuery.event.trigger("ajaxStop");// Process result
if( s.complete )s.complete(xml, status);jQuery(io).unbind()setTimeout(function()
{try
{jQuery(io).remove();jQuery(form).remove();
}catch(e)
{jQuery.handleError(s, xml,null, e);
}},100)xml =null}
}
// Timeout checker
if( s.timeout >0)
{setTimeout(function(){
// Check to see if the request is still happening
if(!requestDone ) uploadCallback("timeout");
}, s.timeout);
}
try
{var form = jQuery('#'+ formId);jQuery(form).attr('action', s.url);jQuery(form).attr('method','POST');jQuery(form).attr('target', frameId);
if(form.encoding)
{jQuery(form).attr('encoding','multipart/form-data');
}
else
{jQuery(form).attr('enctype','multipart/form-data');
}jQuery(form).submit();}catch(e)
{jQuery.handleError(s, xml,null, e);
}jQuery('#'+ frameId).load(uploadCallback);
return{abort: function(){
try
{jQuery('#'+ frameId).remove();jQuery(form).remove();
}
catch(e){}
}};
},uploadHttpData: function( r, type ){var data =!type;data = type =="xml"|| data ? r.responseXML: r.responseText;
// If the type is "script", eval it in global context
if( type =="script"){jQuery.globalEval( data );
}elseif( type =="json"){eval("data = "+ data );
}elseif(type =="html"){jQuery("<div>").html(data).evalScripts();
}
return data;
},handleError: function( s, xml, status, e ){
// If a local callback was specified, fire it
if( s.error )s.error( xml, status, e );// Fire the global callback
if( s.global )jQuery.event.trigger("ajaxError",[xml, s, e]);
}
});