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HTML5 File API - slicing or not?

There are some nice examples of loading files in HTML5 Rocks , but there is something that is not enough for me.

As far as I can see, the download monitoring example code also notes that this is useful when we upload large files.

I'm sure without slicing the file? I mean server problems, memory, etc. Chrome doesn't support File.slice()at the moment, and I don't want to use a bloated jQuery plugin if possible.

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2 answers

Chrome FF File.slice(), File.webkitSlice() File.mozSlice(), . , .zip . :

Blob.webkitSlice( 
  in long long start, 
  in long long end, 
  in DOMString contentType 
);

, ? , , . HTML5Rocks . - . 500 , 99%:)

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, blobs:

function readBlob() {
    var files = document.getElementById('files').files;
    var file = files[0];
    var ONEMEGABYTE = 1048576;
    var start = 0;
    var stop = ONEMEGABYTE;

    var remainder = file.size % ONEMEGABYTE;
    var blkcount = Math.floor(file.size / ONEMEGABYTE);
    if (remainder != 0) blkcount = blkcount + 1;

    for (var i = 0; i < blkcount; i++) {

        var reader = new FileReader();
        if (i == (blkcount - 1) && remainder != 0) {
            stop = start + remainder;
        }
        if (i == blkcount) {
            stop = start;
        }

        //Slicing the file 
        var blob = file.webkitSlice(start, stop);
        reader.readAsBinaryString(blob);
        start = stop;
        stop = stop + ONEMEGABYTE;

    } //End of loop

} //End of readblob
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