blobs

Since Blobbuilder is deprecated and I have recently decided to use a new facial recognition API I am having a hard time switching over to just "blob". function dataURItoBlob(dataURI, callback) { // convert base64 to raw binary data held in a string // doesn't handle URLEncoded DataURIs var byteString; if (dataURI.split(',')[0].indexOf('base64') >= 0) { byteString = atob(dataURI.split(',')[1]); } else { byteString = unescape(dataURI.split(',')[1]); } // separate out the mime component var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0]; // write the bytes of the string to an

Ok, Let's say I have document data stored somewhere, let's arbitrarily take this pdf . Issue #1. What I want to do is make an AJAX call to this URL (because I need to pass some authentication headers and it is cross domain). Then take the returned data, create a blob url for it, append an iFrame to the DOM, and direct the src to the blob url. Currently my code looks like this: $.ajax({ url:'http://www.grida.no/climate/ipcc_tar/wg1/pdf/tar-01.pdf' }).done(function(data){ var file = new Blob([data], {type:'application/pdf'}), url = URL.createObjectURL(file), _iFrame = document.createElement(

I have a whole lot of records where text has been stored in a blob in MySQL. For ease of handling I'd like to change the format in the database to TEXT... Any ideas how easily to make the change so as not to interrupt the data - I guess it will need to be encoded properly? Yuma That's unnecessary. Just use SELECT CONVERT(column USING utf8) FROM ..... instead of just SELECT column FROM ... Ólafur Waage Here's an example of a person who wants to convert a blob to char(1000) with UTF-8 encoding: CAST(a.ar_options AS CHAR(10000) CHARACTER SET utf8) This is his answer. There is probably much more

I am allowing the user to load images into a page via drag&drop and other methods. When an image is dropped, I'm using URL.createObjectURL to convert to an object URL to display the image. I am not revoking the url, as I do reuse it. So, when it comes time to create a FormData object so I can allow them to upload a form with one of those images in it, is there some way I can then reverse that Object URL back into a Blob or File so I can then append it to a FormData object? As gengkev alludes to in his comment above, it looks like the best/only way to do this is with an async xhr2 call: var xhr