challenge 17 readme + root readme updated

nitishdayal · nitishdayal · commit c40407b3ee70 · 2016-12-23T06:49:06.000-08:00
diff --git a/exercises/17 - Sort Without Articles/README.md b/exercises/17 - Sort Without Articles/README.md
@@ -0,0 +1,58 @@
+# Exercise 17: Sort Without Articles
+Nitish Dayal, Software & Applications Developer - [Contact](http://nitishdayal.me)  
+Last Commit Date: Dec 23, 2016
+
+We're given an HTML page with an _unordered list_, and an _array of string
+  values_ in the `script` tag. Sort the values in the array **excluding
+  the prefixes 'The', A', or 'An'** and place the values into the _unordered
+  list_ as _list items_.
+
+## Guide
+
+Declare a `const` variable and define it as a _regular expression pattern_
+  that will match the prefixes we want to exclude that is **case insensitive**.
+  Create a function that will accept a string value as a parameter and
+  and returns the string after replacing any parts of the string that match
+  the previously defined _regular expression pattern_ with an empty string,
+  excluding leading or trailing whitespaces. Declare a `const` and define
+  it as the result of sorting through the provided array, passing each
+  item in the array to the previously defined function. FInally, target
+  the _unordered list_ and update its _inner HTML_ to display each item
+  in the array as a _list item_.
+
+**Steps:**
+
+1. Declare a `const` variable and define as a new Regular Expression object.
+
+    ```JavaScript
+    const namesPrefix = new RegExp('^(a |the |an )', 'i')
+    ```
+
+2. Declare a `const` and define it as an _arrow function_ which accepts
+  a parameter `bandName` and returns the provided argument after replacing
+  any values that match the previously defined RegEx pattern with an empty
+  string and removing any leading or trailing whitespace.
+
+    ```JavaScript
+    const stripPrefixes = (bandName) => bandName.replace(namesPrefixes, '').trim()
+    ```
+
+3. Declare a `const` and define it as the **result** of sorting through the `bands`
+  array, passing each item into the `stripPrefixes` function to remove prefixes (if
+  they exist) before comparing them.
+
+    ```JavaScript
+    const sortedBands = bands.sort((a, b) => stripPrefixes(a) > stripPrefixes(b) ? 1 : -1)
+    ```
+
+4. Select the `#bands` unordered list and update the _inner HTML_ to be the items in
+  the sortedBands array stored within _list items_.
+
+    ```JavaScript
+    document.querySelector('#bands).innerHTML = 
+      sortedBands
+        .map(band => `${<li>${band}</li>`})
+        .join('')
+    ```
+
+Another one down, another one down, another one bites the dust! HEY!
diff --git a/exercises/17 - Sort Without Articles/index-FINISHED.html b/exercises/17 - Sort Without Articles/index-FINISHED.html
diff --git a/exercises/17 - Sort Without Articles/index.html b/exercises/17 - Sort Without Articles/index.html
@@ -57,11 +57,11 @@
   // accepts a 'bandName' property and returns that provided argument
   // after replacing values that match the previously defined
   // regex pattern with an empty string and removing whitespace on either end
-  const stripArticles = (bandName) => bands[0].replace(namePrefixes, '').trim()
+  const stripPrefixes = (bandName) => bandName.replace(namePrefixes, '').trim()
 
   // Declare constant variable and define as the result of sorting through the 'bands'
   // array depending on the band name excluding prefixes ('A', 'The', 'An')
-  const sortedBands = bands.sort((a, b) => stripArticles(a) > stripArticles(b) ? 1 : -1);
+  const sortedBands = bands.sort((a, b) => stripPrefixes(a) > stripPrefixes(b) ? 1 : -1);
 
   // Select the #bands unordered list and update the inner html
   // to be the values in the sortedBands array stored within
diff --git a/readme.md b/readme.md
@@ -44,7 +44,7 @@ Completed written guides can be found in the corresponding challenge directory (
 14. [x] ~~[JavaScript References vs. Copying](./exercises/14\ -\ JavaScript\ References\ VS\ Copying)~~
 15. [x] ~~[LocalStorage](./exercises/15\ -\ LocalStorage/)~~
 16. [x] ~~[Mouse Move Shadow](./exercises/16\ -\ Mouse\ Move\ Shadow/)~~
-17. [ ] Sort Without Articles
+17. [x] ~~[Sort Without Articles](./exercises/17\ -\ Sort\ Without\ Articles/)~~
 18. [ ] Adding Up Times with Reduce
 19. [ ] Webcam Fun
 20. [ ] Speech Detection
