diff --git a/JS/lib/util.ym.js b/JS/lib/util.ym.js
new file mode 100644
index 0000000..489c7ea
--- /dev/null
+++ b/JS/lib/util.ym.js
@@ -0,0 +1,158 @@
+import 'assets://js/lib/uri.min.js'
+import cheerio from 'assets://js/lib/cheerio.min.js';
+import 'assets://js/lib/crypto-js.js'
+
+var charStr = 'abacdefghjklmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789';
+export function randIndex(min, max, i) {
+    let index = Math.floor(Math.random() * (max - min + 1) + min),
+        numStart = charStr.length - 10;
+    if (i == 0 && index >= numStart) {
+        index = randIndex(min, max, i);
+    }
+    return index;
+}
+
+export function randomStr(len) {
+    let min = 0, max = charStr.length - 1, _str = '';
+    len = len || 15;
+    for (var i = 0, index; i < len; i++) {
+        index = randIndex(min, max, i);
+        _str += charStr[index];
+    }
+    return _str;
+}
+
+export function urljoin(base, url) {
+    base = base || '';
+    url = url || '';
+    let baseU = new Uri(base.trim().rstrip('/'));
+    url = url.trim().rstrip('/');
+    let u = undefined;
+    if (url.startsWith('http://') || url.startsWith('https://')) {
+        u = new Uri(url);
+    } else if (url.startsWith('://')) {
+        u = new Uri(baseU.protocol() + url);
+    } else if (url.startsWith('//')) {
+        u = new Uri(baseU.protocol() + ':' + url);
+    } else {
+        u = new Uri(baseU.protocol() + '://' + baseU.host() + (baseU.port() ? ':' + baseU.port() : '') + '/' + url);
+    }
+    if ((!u.path() || u.path().trim().length === 0) && baseU.path())
+        u.path(baseU.path());
+    if (!u.query() && baseU.query())
+        u.query(baseU.query());
+    return u.toString();
+}
+
+const DOM_CHECK_ATTR = /(url|src|href|data-original|data-src)$/;
+const SELECT_REGEX = /:eq|:lt|:gt|#/g;
+const SELECT_REGEX_A = /:eq|:lt|:gt/g;
+
+export function pdfh(html, parse, base_url) {
+    if (!parse || !parse.trim()) {
+        return ''
+    }
+    let eleFind = typeof html === 'object';
+    let option = undefined;
+    if (eleFind && parse.startsWith('body&&')) {
+        parse = parse.substr(6);
+        if (parse.indexOf('&&') < 0) {
+            option = parse.trim();
+            parse = '*=*';
+        }
+    }
+    if (parse.indexOf('&&') > -1) {
+        let sp = parse.split('&&');
+        option = sp[sp.length - 1];
+        sp.splice(sp.length - 1);
+        if (sp.length > 1) {
+            for (let i in sp) {
+                if (!SELECT_REGEX.test(sp[i])) {
+                    sp[i] = sp[i] + ':eq(0)';
+                }
+            }
+        } else {
+            if (!SELECT_REGEX.test(sp[0])) {
+                sp[0] = sp[0] + ':eq(0)';
+            }
+        }
+        parse = sp.join(' ');
+    }
+    let result = '';
+    const $ = eleFind ? html.rr : cheerio.load(html);
+    let ret = eleFind ? ((parse === '*=*' || $(html.ele).is(parse)) ? html.ele : $(html.ele).find(parse)) : $(parse);
+    if (option) {
+        if (option === 'Text') {
+            result = $(ret).text();
+        }
+        else if (option === 'Html') {
+            result = $(ret).html();
+        }
+        else {
+            result = $(ret).attr(option);
+        }
+        if (result && base_url && DOM_CHECK_ATTR.test(option)) {
+            if (/http/.test(result)) {
+                result = result.substr(result.indexOf('http'));
+            } else {
+                result = urljoin(base_url, result)
+            }
+        }
+    } else {
+        result = $(ret).toString();
+    }
+    return result;
+}
+
+export function pdfa(html, parse) {
+    if (!parse || !parse.trim()) {
+        return [];
+    }
+    let eleFind = typeof html === 'object';
+    if (parse.indexOf('&&') > -1) {
+        let sp = parse.split('&&');
+        for (let i in sp) {
+            if (!SELECT_REGEX_A.test(sp[i]) && i < sp.length - 1) {
+                sp[i] = sp[i] + ':eq(0)';
+            }
+        }
+        parse = sp.join(' ');
+    }
+    const $ = eleFind ? html.rr : cheerio.load(html);
+    let ret = eleFind ? ($(html.ele).is(parse) ? html.ele : $(html.ele).find(parse)) : $(parse);
+    let result = [];
+    if (ret) {
+        ret.each(function (idx, ele) {
+            result.push({ rr: $, ele: ele });
+        });
+    }
+    return result;
+}
+
+const defaultParser = {
+    pdfh:pdfh,
+    pdfa:pdfa,
+    pd(html,parse,uri){
+        let ret = this.pdfh(html,parse);
+        if(typeof(uri)==='undefined'||!uri){
+            uri = '';
+        }
+        if(DOM_CHECK_ATTR.test(parse)){
+            if(/http/.test(ret)){
+                ret = ret.substr(ret.indexOf('http'));
+            }else{
+                ret = urljoin(MY_URL,ret)
+            }
+        }
+        return ret
+    },
+};
+
+globalThis.randIndex = randIndex;
+globalThis.randomStr = randomStr;
+globalThis.urljoin = urljoin;
+globalThis.joinUrl = urljoin;
+globalThis.defaultParser = defaultParser;
+globalThis.pdfa = defaultParser.pdfa;
+globalThis.pdfh = defaultParser.pdfh;
+globalThis.pd = defaultParser.pd;