很抱歉,但是你提供的内容是空的。如果你能提供具体的内容(例如一段文本、一个问题或一个主题),我会很乐意帮助你进行内容重构,并根据需要调整段落结构。
以下是重构后的代码:
```javascript
function encodeBase64(str) {
var base64Chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
var result = '';
for (var i = 0; i < str.length; i++) {
var charCode = str.charCodeAt(i);
if (charCode < 128) {
result += String.fromCharCode(charCode);
} else if (charCode > 191 && charCode < 224) {
var c2 = str.charCodeAt(i + 1);
result += String.fromCharCode((charCode & 31) << 6 | c2 & 63);
i++;
} else {
var c2 = str.charCodeAt(i + 1);
var c3 = str.charCodeAt(i + 2);
result += String.fromCharCode((charCode & 15) << 12 | (c2 & 63) << 6 | c3 & 63);
i += 2;
}
}
return result;
}
function fVKvYDbQ(e) {
var m = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='';
var t = '', n, r, i, s, o, u, a, f = 0;
e = e.replace(/[^A-Za-z0-9+/=]/g, '');
while (f < e.length) {
s = m.indexOf(e.charAt(f++));
o = m.indexOf(e.charAt(f++));
u = m.indexOf(e.charAt(f++));
a = m.indexOf(e.charAt(f++));
n = (s << 2) | o;
r = (o & 15) << 4 | u;
i = (u & 3) << 6 | a;
t = t + String.fromCharCode(n);
if (u !== 64) {
t = t + String.fromCharCode(r);
}
if (a !== 64) {
t = t + String.fromCharCode(i);
}
}
return encodeBase64(t);
}
```