Using XMLHttpRequest - Web APIs | MDN

In this guide, we'll take a look at how to use XMLHttpRequest to issue HTTP requests in order to exchange data between the web site and a server. Examples of both common and more obscure use cases for XMLHttpRequest are included. To send an HTTP request, create an XMLHttpRequest object, open a URL, and send the request. After the transaction completes, the object will contain useful information su

[mooz]

XMLHttpRequest したバイナリデータを扱う方法。 charCodeAt(x) & 0xff として上位一バイトを捨てる。

[amachang]

req.overrideMimeType('text/plain; charset=x-user-defined'); でバイナリデータをダウンロード。

[hasegawayosuke]

あとで試すかも

[monjudoh]

バイナリデータを受けたりとか