typed-arrays - w3toppers.com

How to create an ArrayBuffer and data URI from Blob and File objects without FileReader?

I just put it here: var input = document.querySelector(“input[type=file]”); input.addEventListener(“change”, handleFiles, true); // for url window.URL = window.URL || window.webkitURL; function handleFiles(evnet) { var file = event.target.files[0]; document.querySelector(‘iframe’) .setAttribute(‘src’, window.URL.createObjectURL(file)); } <!DOCTYPE html> <html> <head> </head> <body> <form method=”get” entype=”multipart/form-data” target=”binaryFrame”> <input id=”#avatar” type=”file” name=”file” /> <input type=”submit” /> </form> <iframe name=”binaryFrame”></iframe> </body> </html>

Javascript Typed Arrays and Endianness

The current behaviour, is determined by the endianness of the underlying hardware. As almost all desktop computers are x86, this means little-endian. Most ARM OSes use little-endian mode (ARM processors are bi-endian and thus can operate in either). The reason why this is somewhat sad is the fact that it means almost nobody will test … Read more

How can I merge TypedArrays in JavaScript?

Use the set method. But note, that you now need twice the memory! var a = new Int8Array( [ 1, 2, 3 ] ); var b = new Int8Array( [ 4, 5, 6 ] ); var c = new Int8Array(a.length + b.length); c.set(a); c.set(b, a.length); console.log(a); console.log(b); console.log(c);

Converting between strings and ArrayBuffers

Update 2016 – five years on there are now new methods in the specs (see support below) to convert between strings and typed arrays using proper encoding. TextEncoder The TextEncoder represents: The TextEncoder interface represents an encoder for a specific method, that is a specific character encoding, like utf-8, iso-8859-2, koi8, cp1261, gbk, … An … Read more