Javascript. Append to blob

Question

Because BlobBuilder is deprecated, we have to use Blob, so instead of

var bb = new (window.MozBlobBuilder || window.WebKitBlobBuilder || window.BlobBuilder)();
bb.append(data);
var blob = bb.getBlob();

We do

var blob = new Blob([data]);

That is ok, but what if I want to append Data to same blob more times? Something like:

for(var i=0;i<10;i++){
    bb.append(" "+i);
}

How to do it without BlobBuilder? Thanks all!

Answer 1

Thanks to minitech♦!

You answer moved me to answer my question. So what you show is again working with a variable and at the end write it to blob. I wanted so said update a blob, or with other words append to blob. So you can do it on this way:

var blob = new Blob([],  {type: "text/plain"});
for (var i=0; i<10; i++){
    blob = new Blob([blob," "+i], {type: "text/plain"});
}

Here is Fiddle: http://jsfiddle.net/yuM2N/111/

Answer 2

[data] is an array of parts, so you can just append to an array:

var parts = [];

for (var i = 0; i < 10; i++) {
    parts.push(" " + i);
}

var blob = new Blob(parts);