Base64：如何编码/解码页面的整个HTML代码

Question

i'm trying to encode a page:

btoa(document.querySelector('html').innerHTML)

But it doesn't work with such data, does anyone know, how it can be done?

Answer 1

Unicode characters can be reason of this. Try to use this example from mozilla site ( https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/btoa ):

function utoa(str) {
    return window.btoa(unescape(encodeURIComponent(str)));
}

function atou(str) {
    return decodeURIComponent(escape(window.atob(str)));
}

// Usage:
utoa('✓ à la mode'); // 4pyTIMOgIGxhIG1vZGU=
atou('4pyTIMOgIGxhIG1vZGU='); // "✓ à la mode"

utoa('I \u2661 Unicode!'); // SSDimaEgVW5pY29kZSE=
atou('SSDimaEgVW5pY29kZSE='); // "I ♡ Unicode!"