FileReaderSync.readAsBinaryString() - Web APIs
the readasbinarystring() method of the filereadersync interface allows to read file or blob objects in a synchronous way into an domstring.
... syntax readasbinarystring(file); readasbinarystring(blob); parameters blob the dom file or blob to read.
... specifications specification status comment file apithe definition of 'readasbinarystringsync' in that specification.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetreadasbinarystringchrome full support yesedge full support 12firefox full support 8ie full support yesopera full support yessafari full support yesw...

FileReader.readAsBinaryString() - Web APIs
the readasbinarystring method is used to start reading the contents of the specified blob or file.
... syntax instanceoffilereader.readasbinarystring(blob); parameters blob the blob or file from which to read.
...ent('canvas'); var height = 200; var width = 200; canvas.width = width; canvas.height = height; var ctx = canvas.getcontext('2d'); ctx.strokestyle = '#090'; ctx.beginpath(); ctx.arc(width/2, height/2, width/2 - width/10, 0, math.pi*2); ctx.stroke(); canvas.toblob(function (blob) { var reader = new filereader(); reader.onload = function () { console.log(reader.result); } reader.readasbinarystring(blob); }); specifications specification status comment file apithe definition of 'readasbinarystring' in that specification.

Sending forms through JavaScript - Learn web development
if( file.dom.files[0] ) { reader.readasbinarystring( file.dom.files[0] ); } // if not, read the file once the user selects it.
... file.dom.addeventlistener( "change", function () { if( reader.readystate === filereader.loading ) { reader.abort(); } reader.readasbinarystring( file.dom.files[0] ); } ); // senddata is our main function function senddata() { // if there is a selected file, wait it is read // if there is not, delay the execution of the function if( !file.binary && file.dom.files.length > 0 ) { settimeout( senddata, 10 ); return; } // to construct our multipart form data request, // we need an xmlhttprequest instance const xhr = new xmlhttprequest(); // we need a separator to define each part of the request const boundary = "blob"; // store our body request in a string.

FileReaderSync - Web APIs
filereadersync.readasbinarystring() this method converts a specified blob or a file into a domstring representing the input data as a binary string.
... yeschrome android full support yesfirefox android full support 8opera android full support yessafari ios full support yessamsung internet android full support yesreadasbinarystringchrome full support yesedge full support 12firefox full support 8ie full support yesopera full support yessafari full support yesw...

Index - Web APIs
1342 filereader.onload event handler, file, filereader, property, reference the filereader.onload property contains an event handler executed when the load event is fired, when content read with readasarraybuffer, readasbinarystring, readasdataurl or readastext is available.
... 1344 filereader.readasbinarystring() api, file api, files, method, reference the readasbinarystring method is used to start reading the contents of the specified blob or file.

Using XMLHttpRequest - Web APIs
= this.segments.length; osegmreq.owner = this; /* (end of custom properties) */ osegmreq.onload = pushsegment; this.segments.push("content-disposition: form-data; name=\"" + ofield.name + "\"; filename=\"" + ofile.name + "\"\r\ncontent-type: " + ofile.type + "\r\n\r\n"); this.status++; osegmreq.readasbinarystring(ofile); } } else { /* enctype is application/x-www-form-urlencoded or text/plain or method is get: files will not be sent!
...but, since the aim of this script is to work with a stringifiable raw data, we used the sendasbinary() method in conjunction with the readasbinarystring() method of the filereader api.

Using files from web applications - Web APIs
(e){ self.ctrl.update(100); const canvas = self.ctrl.ctx.canvas; canvas.parentnode.removechild(canvas); }, false); xhr.open("post", "http://demos.hacks.mozilla.org/paul/demos/resources/webservices/devnull.php"); xhr.overridemimetype('text/plain; charset=x-user-defined-binary'); reader.onload = function(evt) { xhr.send(evt.target.result); }; reader.readasbinarystring(file); } the fileupload() function shown above creates a throbber, which is used to display progress information, and then creates an xmlhttprequest to handle uploading the data.

File.getAsBinary() - Web APIs
note: this method is obsolete; you should use the filereader method readasbinarystring() or readasarraybuffer() instead.

FileReader.onload - Web APIs
the filereader.onload property contains an event handler executed when the load event is fired, when content read with readasarraybuffer, readasbinarystring, readasdataurl or readastext is available.

FileReader.result - Web APIs
readasbinarystring() the result contains the raw binary data from the file in a string.

FileReader - Web APIs
filereader.readasbinarystring() starts reading the contents of the specified blob, once finished, the result attribute contains the raw binary data from the file as a string.

XMLHttpRequest.sendAsBinary() - Web APIs
you can create the binary string using the filereader method readasbinarystring().