add common.js

+/**
+ * 页面公共逻辑和接口
+ * @author: xuqi<qi.xu@yoho.cn>
+ * @date: 2015/11/23
+ */
+
+function cookie(name) {
+    var re = new RegExp(name + '=([^;$]*)', 'i'),
+        matchPattern = '$1';
+
+    return re.test(decodeURIComponent(document.cookie)) ? RegExp[matchPattern] : '';
+}
+
+function setCookie(name, value, options) {
+    var expires = '',
+        path,
+        domain,
+        secure,
+        date;
+
+    if (typeof value !== 'undefined') {
+        options = options || {};
+        if (value === null) {
+            value = '';
+            options.expires = -1;
+        }
+
+        if (options.expires &&
+            (typeof options.expires === 'number' || options.expires.toUTCString)) {
+            if (typeof options.expires === 'number') {
+                date = new Date();
+                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
+            } else {
+                date = options.expires;
+            }
+            expires = '; expires=' + date.toUTCString();
+        }
+        path = options.path ? '; path=' + options.path : '';
+        domain = options.domain ? '; domain=' + options.domain : '';
+        secure = options.secure ? '; secure' : '';
+        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
+    }
+}
+
+function queryString() {
+    var vars = {},
+        hash,
+        i,
+        search = window.location.search,
+        hashes = search ? decodeURIComponent(search).slice(1).split('&') : [];
+
+    for (i = 0; i < hashes.length; i++) {
+        hash = hashes[i].split('=');
+        vars[hash[0]] = hash[1];
+    }
+    return vars;
+}
+
+window.cookie = cookie;
+
+window.setCookie = setCookie;
+
+window.queryString = queryString;