The function calculates values from Bytes to KB or MB.
Here we are first checking the value of bytes and if its less that zero or not a number returns null.

Otherwise we are calculating,
1024 Bytes = 1 KB.
1024 KB = 1 MB

/**
* Calculates the File size
*
* @param bytes Loaded bytes or file size in bytes
* @return converted bytes to String.
*/
function fileSize( bytes : Number ) : String
{
if(bytes<0 number =” Number(bytes/1024);” string =” Math.round(fileSize)”>0?(fileSize>1024?(fileSize/1024).toFixed(2)+”MB”:((fileSize.toFixed(2))+”KB”)):(fileSize*1024)+”Bytes” ;

return FileSize_str;
}

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