title: Convert FileReader.readAsBinaryString to Unicode escaped string
body: <p>FileReader.<a href="https://developer.mozilla.org/en-US/docs/Web/API/FileReader/readAsBinaryString" rel="nofollow">readAsBinaryString()</a> returns a UTF-8 encoded binary string. How can I get the data as a series of Unicode escaped sequences (\uxxxx) instead?</p>