qns: update

Author: yangshun

questions/describe-the-difference-between-a-cookie-sessionstorage-and-localstorage/en-US.mdx

@@ -71,7 +71,7 @@ document.cookie = 'auth_token=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/';
 
 It is a pain to read/write to cookies. `document.cookie` returns a single string containing all the key/value pairs delimited by `;` and you have to parse the string yourself. The [`js-cookie`](https://github.com/js-cookie/js-cookie) npm library provides a simple and lightweight API for reading/writing cookies in JavaScript.
 
-A modern native way of accessing cookies is via the the [Cookie Store API](https://developer.mozilla.org/en-US/docs/Web/API/Cookie_Store_API) which is only available on HTTPS pages.
+A modern native way of accessing cookies is via the [Cookie Store API](https://developer.mozilla.org/en-US/docs/Web/API/Cookie_Store_API) which is only available on HTTPS pages.
 
 ```js
 // Set a cookie. More options are available too.

questions/what-are-iterators-and-generators-and-what-are-they-used-for/en-US.mdx

@@ -226,10 +226,12 @@ for (const number of range) {
 Generators are well-suited for iterating over data streams, such as fetching data from an API or reading files. This example demonstrates using a generator to fetch data from an API in batches:
 
 ```js
-function* fetchDataInBatches(url, batchSize = 10) {
+async function* fetchDataInBatches(url, batchSize = 10) {
   let startIndex = 0;
   while (true) {
-    const response = await fetch(`${url}?start=${startIndex}&limit=${batchSize}`);
+    const response = await fetch(
+      `${url}?start=${startIndex}&limit=${batchSize}`,
+    );
     const data = await response.json();
     if (data.length === 0) break;
     yield data;

questions/what-are-proxies-in-javascript-used-for/en-US.mdx

@@ -224,5 +224,5 @@ Proxies in JavaScript provide a powerful and flexible way to intercept and custo
 
 ## Further reading
 
-- [Foo](#foo)
-- [Bar](#bar)
+- [Proxy - JavaScript | MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy)
+- [Proxy and Reflect | JavaScript.info](https://javascript.info/proxy)

questions/what-are-some-common-performance-bottlenecks-in-javascript-applications/en-US.mdx

@@ -183,4 +183,3 @@ function throttle(func, limit) {
 
 - [MDN Web Docs: Performance](https://developer.mozilla.org/en-US/docs/Web/Performance)
 - [Google Developers: Web Performance Optimization](https://developers.google.com/web/fundamentals/performance)
-- [JavaScript.info: Optimizing browser rendering](https://javascript.info/rendering)

questions/what-are-the-various-ways-to-create-objects-in-javascript/en-US.mdx

@@ -62,7 +62,7 @@ person.age = 30;
 person.greet(); // Output: Hello, my name is John and I'm 30 years old.
 ```
 
-An object with a prototype can be created by doing `Object.create(null)`.
+An object without a prototype can be created by doing `Object.create(null)`.
 
 ## ES2015 classes