fix style height when rotating + move cookie util to their specific file

web/assets/js/util/common.js

@@ -56,14 +56,37 @@ function toFixed(num, n) {
     return Math.round(num * n) / n;
 }
 
-function debounce (fn, delay) {
-    var timeoutID = null
+function debounce(fn, delay) {
+    var timeoutID = null;
     return function () {
-      clearTimeout(timeoutID)
-      var args = arguments
-      var that = this
-      timeoutID = setTimeout(function () {
-        fn.apply(that, args)
-      }, delay)
+        clearTimeout(timeoutID);
+        var args = arguments;
+        var that = this;
+        timeoutID = setTimeout(function () {
+            fn.apply(that, args);
+        }, delay);
+    };
+}
+
+function getCookie(cname) {
+    let name = cname + '=';
+    let decodedCookie = decodeURIComponent(document.cookie);
+    let ca = decodedCookie.split(';');
+    for (let i = 0; i < ca.length; i++) {
+        let c = ca[i];
+        while (c.charAt(0) == ' ') {
+            c = c.substring(1);
+        }
+        if (c.indexOf(name) == 0) {
+            return c.substring(name.length, c.length);
+        }
     }
-  }
+    return '';
+}
+
+function setCookie(cname, cvalue, exdays) {
+    const d = new Date();
+    d.setTime(d.getTime() + exdays * 24 * 60 * 60 * 1000);
+    let expires = 'expires=' + d.toUTCString();
+    document.cookie = cname + '=' + cvalue + ';' + expires + ';path=/';
+}