Javascript: Add hint to Match Everything But Letters and Numbers (fre…

…eCodeCamp#19240)

* Javascript: Add hint to Match Everything But Letters and Numbers

Add hint to Match Everything But Letters and Numbers (https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/regular-expressions/match-everything-but-letters-and-numbers and https://guide.freecodecamp.org/certifications/javascript-algorithms-and-data-structures/regular-expressions/match-everything-but-letters-and-numbers/)

* Update index.md

client/src/guide/english/certifications/javascript-algorithms-and-data-structures/regular-expressions/match-everything-but-letters-and-numbers/index.md

@@ -1,10 +1,17 @@
+---	
+title: Match Everything But Letters and Numbers	
 ---
-title: Match Everything But Letters and Numbers
----
+
 ## Match Everything But Letters and Numbers
 
-This is a stub. <a href='https://github.com/freecodecamp/guides/tree/master/src/pages/certifications/javascript-algorithms-and-data-structures/regular-expressions/match-everything-but-letters-and-numbers/index.md' target='_blank' rel='nofollow'>Help our community expand it</a>.
+### Problem:
+
+We need to use the shorthand character class \W to count the number of non-alphanumeric characters in various quotes and strings.
 
-<a href='https://github.com/freecodecamp/guides/blob/master/README.md' target='_blank' rel='nofollow'>This quick style guide will help ensure your pull request gets accepted</a>.
+### Solution:
 
-<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds  -->
+```js
+let quoteSample = "The five boxing wizards jump quickly.";
+let nonAlphabetRegex = /\W/gi; // Change this line
+let result = quoteSample.match(nonAlphabetRegex).length;
+```