diff --git a/README.md b/README.md
index c3401a5..a997d74 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@
 
 > Yokto simply means smallest SI prefix. 
 
-No framework framework 😛
+Simple/tiny jQuery replacement/alternative library 😛
 
-YoktoJS is supposed to be used with VanillaJS, using any frameworks* parallelly might bug things up!
---
-\*frameworks as in: jQuery, etc.
+YoktoJS is supposed to be used with VanillaJS, using any library/frameworks* parallelly might bug things up!
+---
+\*library/frameworks as in: jQuery, etc.  (Basically any library/framework that uses `$_`, `$`, `$$`, `_`, `__` since Yokto uses it.)
diff --git a/yokto.js b/yokto.js
index 5025d9b..15c20f2 100644
--- a/yokto.js
+++ b/yokto.js
@@ -23,24 +23,38 @@ const _ = (parentSelector, tag, attrs, innerText) => {
     };
     parentElem.appendChild(elem);
 };
-const $$ = (callback) => {
-    window.addEventListener("DOMContentLoaded", () => {
-        callback();
+const $$ = (fn) => {
+    if (typeof fn !== 'function') {
+    throw new Error('Argument passed to ready should be a function');
+  }
+
+  if (document.readyState != 'loading') {
+    fn();
+  } else if (document.addEventListener) {
+    document.addEventListener('DOMContentLoaded', fn, {
+      once: true // A boolean value indicating that the listener should be invoked at most once after being added. If true, the listener would be automatically removed when invoked.
     });
+  } else {
+    document.attachEvent('onreadystatechange', function() {
+      if (document.readyState != 'loading')
+        fn();
+    });
+  }
 };
 const $_ = async (method, url, data) => {
     var headers = {};
     if (data) {
         headers['Content-Type'] = 'application/json';
+        headers['Accept'] = 'application/json';
     };
     const resp = await fetch(url, {
         method: method,
-        mode: 'same-origin',
+        mode: 'cors',
         cache: 'no-cache',
         credentials: 'same-origin',
         headers: headers,
         redirect: 'follow',
-        referrerPolicy: 'no-referrer',
+        referrerPolicy: 'unsafe-url',
         body: JSON.stringify(data)
     });
     return await resp.json();