javascript - multiple file upload using ajax -

-

i trying achieve multiple file upload using ajax, or @ least should ajax (without page reload). below code...

i able using simple submit. in above code can list of files, reomove files , upload rest server. want ajax, progressbar. can not use file api python on server side not file object then. appreciated. 

<!doctype html>

uploader 

    <script type="text/javascript">         var file_array = [];         var file_name_cell,relation_cell, option_cell, sr_no_cell;         var rowid = 0;         var filecount = 1;         var new_file_id = '';         var array_last_index = 0;           /* ----------- add file name in hidden field start ----------- */          function addfilename(fileid){             var file = document.getelementbyid(fileid);             for(var i=0; i<file.files.length; i++){                 file_array.push(file.files.item(i).filename);              }             $('#file_names').val(file_array.join('^'));             file.style.display = 'none';             createnewfileinput();             addrow();          }          /* ----------- add file name in hidden field end ----------- */          /* ----------- create , display new file input start ------------ */          function createnewfileinput(){             filecount += 1             new_file_id = 'files_' + filecount;              var new_file_input = document.createelement('input');             new_file_input.setattribute('type', 'file');             new_file_input.setattribute('name', new_file_id);             new_file_input.setattribute('id', new_file_id);             new_file_input.setattribute('multiple', 'multiple');             new_file_input.setattribute('onchange', 'addfilename(\'' + new_file_id + '\')');             document.getelementbyid('file_input_area').appendchild(new_file_input);          }          /* ----------- create , display new file input end  ------------ */          /* ----------- add row in table start ----------- */          function addrow(){             var table = document.getelementbyid('selected_files_table_body');             var last_row,                 row;             for(var i=array_last_index; i<file_array.length; i++){                 rowid += 1;                 try{                     last_row = table.rows.length;                 }                 catch(e){                     row = table.insertrow(0);                 }                 row = table.insertrow(last_row);                 row.id = rowid;                 sr_no_cell = row.insertcell(0);                 sr_no_cell.innerhtml = rowid+'.';                 file_name_cell = row.insertcell(1);                 file_name_cell.style.textalign = 'left';                 file_name_cell.innerhtml = file_array[i];                 option_cell = row.insertcell(2);                 option_cell.innerhtml = '<a href="javascript<b></b>:void(0)"><img src="/django_forms_media/icon/remove.png" onclick="removerow(' + rowid + ',\'' + file_array[i] + '\');" border=0 /></a>&nbsp;';               }             array_last_index = file_array.length;          }          /* ----------- add row in table end ----------- */           /* ----------- remove row table start ----------- */          function removerow(removerowid, file_to_remove){             var row = document.getelementbyid(removerowid);             row.parentnode.removechild(row);             removefilename(file_to_remove);         }          /* ----------- remove row table end ----------- */          /* ----------- remove specific file name hidden field , array start ----------- */          function removefilename(file_to_remove){             (var = 0; < file_array.length; i++) {                 if (file_array[i] == file_to_remove) {                     file_array.splice(i, 1);                     array_last_index -= 1;                     break;                 }             }             $('#file_names').val(file_array.join('^'));         }          /* ----------- remove specific file name hidden field , array end ----------- */          /* ----------- clear file array , removing rows start ----------- */          function clearallfiles(){             file_array = [];             var table = document.getelementbyid("selected_files_table_body");             (var = table.rows.length - 1; > 0; i--) {                 table.deleterow(i);                 rowid = 0;             }         }          /* ----------- clear file array , removing rows end ----------- */       </script> </head> <body>     <div >          <div >             <div >                 <fieldset>                     <legend>                         upload package                     </legend>                     <form id="frm_upload_package" name="frm_upload_package" action="/djangoforms/uploadcontents/" method="post" enctype="multipart/form-data">                         <div class="selectfile">                             <label>                                 select files:                             </label>                             <br/>                         </div>                         <span id="file_input_area">                             <input id="files_1" type="file" name="files_1" multiple = "multiple" onchange="addfilename('files_1');"/>                             <input id="file_names" type="hidden" size=100 name="filenames" />                         </span>                         <fieldset style="width:70%;">                             <legend>selected files</legend>                             <table id = "selected_files_table" name = "selected_files_table" style="margin-left:0" class="sortable" cellspacing="0" cellpadding="3" border="0">                                 <thead>                                     <tr>                                         <th>sr.no.</th>                                         <th>file name</th>                                         <th>option</th>                                      </tr>                                 </thead>                                 <tbody id = "selected_files_table_body" name = "selected_files_table_body">                                 </tbody>                             </table>                         </fieldset>                         <div class="buttonrow">                             <input type="button" value="upload" id="upload_package" name="upload_package">&nbsp;                             <input type="reset" name="reset_button" id="reset_button" value="cancel" onclick ="clearallfiles();"/>                          </div>                     </form>                 </fieldset>             </div>         </div>     </div> </body>

you have use hidden iframe , send data there, it's not possible upload files xmlhttprequest. also, there numerous jquery plugins doing job, @ them.


Comments

Post a Comment

Popular posts from this blog

android - Spacing between the stars of a rating bar? -

-
ho can set spacing beween stars? thats ratingbar: ratingbar = (ratingbar) inflater.inflate(r.layout.ratingbar, null); ratingbar.setlayoutparams(new layoutparams(layoutparams.wrap_content, layoutparams.wrap_content)); the layout: <?xml version="1.0" encoding="utf-8"?> <ratingbar xmlns:android="http://schemas.android.com/apk/res/android" style="@style/mystyle" android:layout_alignparentright="true" android:layout_height="19dp" android:layout_width="wrap_content" android:numstars="5"> </ratingbar> the style: <style name="mystyle" parent="@android:style/widget.ratingbar"> <item name="android:progressdrawable">@drawable/android_r2_ratingstar_yellow</item> <item name="android:indeterminatedrawable">@drawable/android_r2_ratingstar_grey</item> </style> thanks, cheers you have ...
Read more

html - Instapaper-like algorithm -

-
does of algorithm extracts contents webpage? instapaper ? there 2 steps instapaper does: find main content block on page (excluding headers, footers, menus etc) from content block extract , format text to find content block (typically html block element, div containing key page text content) instapaper uses algorithm 1 used readability . can @ source of readability.js see what's going on, @ core tries find area on page highest text/link ratio, although has other simple scoring metrics (e.g. off top of head, things ratio of text commas, para elements etc) go heuristics. once have identified root node element, relevant content, you'll need format it, if want can pull node element containing text out of source document , insert yours, in reality you'll want remove existing styles , apply own, standard , feel. if want output nice text-only can use jericho's renderer . update1 : should mention else instapaper - follow 'pagination' links (...
Read more

c# - How to execute a particular part of code asynchronously in a class -

-
i creating speech recognition engine that's going respond user commands.i have created button enable , disable speech recognition per user convenience.i have used dispose() of speech engine disable speech recoginition.here code private void button1_click(object sender, routedeventargs e) { engineon = !engineon; if (engineon) { speechengine = speech.createspeechengine(); //speech class creates , returns new speech engine. speechengine.audiolevelupdated += new eventhandler<audiolevelupdatedeventargs>(speechengine_audiolevelupdated); // use system's default microphone speechengine.setinputtodefaultaudiodevice(); speechengine.loadgrammar(new dictationgrammar()); // start listening speechengine.recognizeasync(recognizemode.multiple); } else { speechclass.myengine.dispose(); } } but disposal of speech obj...
Read more