将任何数据转换为JavaScript中的数组缓冲区

Question

I'm not sure if I understand the concept of UInt8Array right, but I'm trying to convert any given data which can be image/png,jpg,gif text/html,json,js,css,less or any type of data including octet binary and then I can create data type UInt8Array

So, for any given data how can I convert them so I can make this possible?

var value = new Uint8Array([2, 4, 6, 8]);

Obviously that numbers in the array is hardcoded with random numbers, but the idea I think I want that part to be the data that I'm trying to convert to.

Answer 1

If you can get the data in a Base64 string MDN can help with this.

To sum up, use base64DecToArr

var myArray = base64DecToArr("QmFzZSA2NCDigJQgTW96aWxsYSBEZXZlbG9wZXIgTmV0d29yaw=="); // "Base 64 \u2014 Mozilla Developer Network"

var myBuffer = base64DecToArr("QmFzZSA2NCDigJQgTW96aWxsYSBEZXZlbG9wZXIgTmV0d29yaw==").buffer; // "Base 64 \u2014 Mozilla Developer Network"

alert(myBuffer.byteLength);