docs(blog): update every for snippets

documentation/blog/2024-02-07-js-every.md → documentation/blog/2025-01-17-js-every.md

@@ -4,11 +4,11 @@ description: We expound with examples what the JavaScript every method is, how i
 slug: javascript-every-method
 authors: abdullah_numan
 tags: [javascript]
-image: https://refine.ams3.cdn.digitaloceanspaces.com/blog/2022-11-02-js-every/social.png
+image: https://refine.ams3.cdn.digitaloceanspaces.com/blog/2022-11-02-js-every/social-2.png
 hide_table_of_contents: false
 ---
 
-**_This article was last updated on February 7, 2024, to reorganize content for clarity and add new 'use cases' sections for the JavaScript 'every' method._**
+_**This article was last updated on January 17, 2025, to include best practices for using the JavaScript every method, a detailed table comparing every with some, and tips for avoiding common mistakes when working with sparse arrays, empty arrays, and callbacks involving thisArg.**_
 
 ## Introduction
 
@@ -23,13 +23,19 @@ In this post, we expound with examples what `Array.prototype.every` is and how i
 Steps we'll cover:
 
 - [What is the JavaScript `Array.prototype.every` Method ?](#what-is-the-javascript-arrayprototypeevery-method-)
+  - [JS `Array.prototype.every`: Details of the Callback Function](#js-arrayprototypeevery-details-of-the-callback-function)
+  - [How JavaScript Array `every` Method Works](#how-javascript-array-every-method-works)
+- [Comparison Table: JavaScript `every` vs `some`](#comparison-table-javascript-every-vs-some)
 - [When to Use the JS Array `every` Method](#when-to-use-the-js-array-every-method)
   - [JavaScript Array `every()` With `thisArg` Argument](#javascript-array-every-with-thisarg-argument)
   - [JavaScript Array `every(callback, thisArg)` Doesn't Work With Arrow Functions](#javascript-array-everycallback-thisarg-doesnt-work-with-arrow-functions)
   - [JavaScript Array `every(callback, thisArg)` Works With Non-Arrow Functions](#javascript-array-everycallback-thisarg-works-with-non-arrow-functions)
   - [JavaScript Array `every` Method: Modifying the Caller Array](#javascript-array-every-method-modifying-the-caller-array)
 - [Nuances of Using JS Array `every` Method](#nuances-of-using-js-array-every-method)
+  - [The JS `Array.prototype.every`: Using with Sparse Arrays](#the-js-arrayprototypeevery-using-with-sparse-arrays)
+  - [Using JavaScript `every` With Empty Arrays](#using-javascript-every-with-empty-arrays)
 - [Difference Between Some and Every in JavaScript?](#difference-between-some-and-every-in-javascript)
+- [When Should You Use the JavaScript every Method?](#when-should-you-use-the-javascript-every-method)
 
 ## What is the JavaScript `Array.prototype.every` Method ?
 
@@ -75,6 +81,17 @@ console.log(areAllDoubledEven); // true
 
 In the chunk of code above, `even` is our callback function, which we pass to `every()`. Apparently, we have at least one odd number in our `numbers` array and so not all elements pass the test. So, `every()` returns `false` for `areAllEven`. In contrast, all items in `numbersDoubled` are even, so we get `true` for `areAllDoubledEven`.
 
+## Comparison Table: JavaScript `every` vs `some`
+
+| Feature            | `every` Method                             | `some` Method                                        |
+| ------------------ | ------------------------------------------ | ---------------------------------------------------- |
+| **Purpose**        | Tests if **all** elements pass a condition | Tests if **at least one** element passes a condition |
+| **Returns**        | `true` if all elements pass the test       | `true` if any element passes the test                |
+| **Stops Checking** | At the first failing element               | At the first passing element                         |
+| **Empty Arrays**   | Always returns `true`                      | Always returns `false`                               |
+
+You can now directly copy and paste this table into your Markdown editor!
+
 ## When to Use the JS Array `every` Method
 
 The JS Array `every` method can be used in a wide range of scenarios where we need to verify that all items, with no exception, satisfy the test specified in the callback function. In all cases, the first argument (`element`) has to be passed to the callback. The complexity of the test would determine whether to access the second (`index`), third arguments (`array`), or any additional argument via the `thisArg` object.
@@ -348,6 +365,60 @@ In JavaScript, `some()` returns `true` if any array element meets a condition, w
   - Returns `true` only if all elements pass the test, otherwise `false`.
   - Stops checking once it finds a failing element.
 
+## When Should You Use the JavaScript every Method?
+
+### Data Validation
+
+Use it to check if all form fields are filled in:
+
+```javascript
+const fields = ["[email protected]", "password123"];
+const allFieldsFilled = fields.every((field) => field.trim() !== "");
+console.log(allFieldsFilled); // true if no empty fields
+```
+
+### Check Data Types
+
+Confirm that an array contains only numbers:
+
+```javascript
+const data = [1, 2, 3];
+const allNumbers = data.every((item) => typeof item === "number");
+console.log(allNumbers); // true
+```
+
+### Team Permissions
+
+Verify if all team members have admin roles:
+
+```javascript
+const team = [{ role: "admin" }, { role: "admin" }];
+const allAdmins = team.every((member) => member.role === "admin");
+console.log(allAdmins); // true
+```
+
+## FAQs About the JavaScript every Method
+
+### 1. What is the purpose of the every method in JavaScript?
+
+This checks whether all the elements in an array pass a test provided in a callback function. If all pass, it returns true; otherwise, false.
+
+### 2. Does the every method work for empty arrays?
+
+Yes, this always returns true for empty arrays since there are no elements that could fail the condition.
+
+### 3. Can the every method modify the array?
+
+No, the method itself doesn't change the array. However, the array can change inside the callback function.
+
+### 4. What is the difference between every and some?
+
+every checks if all elements meet the condition, while some checks if at least one element meets the condition.
+
+### 5. Does the every Method Work with Objects?
+
+Yes, but you would need to access the object properties in the callback function to test them.
+
 ## Summary
 
 In this article, we explored in depth the **JavaScript every** which helps us test whether all items in an array pass the test we implement in a callback function. We saw with examples that the callback function can take three arguments, and additional arguments can be bound to its execution context by setting its `this` value with a `thisArg` passed to `every()` as the second argument.