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Fordi/utf8-btoatob.js

Created May 31, 2017 18:42
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DOM btoa / atob UTF-8 suppport
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utf8-btoatob.js
((win, btoa, atob) => Object.assign(win, {
btoa: (str) => btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, (match, p1) => String.fromCharCode(parseInt(p1, 16)))),
atob: (str) => decodeURIComponent(atob(str).split('').map((c) => '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)).join(''))
}))(this, btoa, atob);
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