Bug Tracker

#9992 closed feature (patchwelcome)

Opened August 06, 2011 11:39AM UTC

Closed August 18, 2011 04:44PM UTC

$.get binary

Reported by: sfornengo@gmail.com Owned by:
Priority: low Milestone: None
Component: ajax Version: 1.6.2
Keywords: Cc: jaubourg
Blocked by: Blocking:
Description

it would be nice if we could get "arraybuffer" or "blob" response type from ajax request.

it seems direct "blob" response is not yet supported by all browser (chrome don't) but we can easily build it from arraybuffer:

var xhr=new XMLHttpRequest();
xhr.open("GET",url,true);
xhr.responseType="arraybuffer";
xhr.onload=function(){
    if (this.status==200){
        var bb=new BlobBuilder();
        bb.append(this.response);
        var blob=bb.getBlob());
        //...
    }
};
xhr.send();
Attachments (0)
Change History (3)

Changed August 07, 2011 01:25PM UTC by timmywil comment:1

cc: → jaubourg
component: unfiled → ajax
priority: undecided → low

I think this is best implemented with a converter, but I'll defer to jaubourg.

Changed August 07, 2011 02:45PM UTC by jaubourg comment:2

description: it would be nice if we could get "arraybuffer" or "blob" response type from ajax request.[[BR]] \ it seems direct "blob" response is not yet supported by all browser (chrome don't) but we can easily build it from arraybuffer:[[BR]] \ \ var xhr=new XMLHttpRequest();[[BR]] \ xhr.open("GET",url,true);[[BR]] \ xhr.responseType="arraybuffer";[[BR]] \ xhr.onload=function(){[[BR]] \ if (this.status==200){[[BR]] \ var bb=new BlobBuilder();[[BR]] \ bb.append(this.response);[[BR]] \ var blob=bb.getBlob());[[BR]] \ ...[[BR]] \ }[[BR]] \ };[[BR]] \ xhr.send(); \ → it would be nice if we could get "arraybuffer" or "blob" response type from ajax request.[[BR]] \ it seems direct "blob" response is not yet supported by all browser (chrome don't) but we can easily build it from arraybuffer: \ {{{#!js \ var xhr=new XMLHttpRequest(); \ xhr.open("GET",url,true); \ xhr.responseType="arraybuffer"; \ xhr.onload=function(){ \ if (this.status==200){ \ var bb=new BlobBuilder(); \ bb.append(this.response); \ var blob=bb.getBlob()); \ //... \ } \ }; \ xhr.send(); \ }}}

Maybe it could be implemented using a "text bin" converter. You'd need a prefilter for bin requests to add responseType: "arraybuffey" into options.xhrFields though. And that's provided xhr.responseText === xhr.response which I'm really not sure about.

So, this may require changes in the xhr transport... but I'm unsure if this is already "standard" enough (ie. not requiring insane jumping through hoops).

Changed August 18, 2011 04:44PM UTC by dmethvin comment:3

resolution: → patchwelcome
status: new → closed

Sounds like this should start life as a converter, outside core. If it's popular we can incorporate it.