Update unescapeString.md

snippets/unescapeString.md

@@ -1,14 +1,17 @@
-### unescapeString
+### unescapeHTML
 
-Unescapes a string from HTML.
+Unescapes escaped HTML characters.
 
-Use a chain of `String.replace()` calls combined with regular expressions to replace special characters with the proper symbols.
+Use `String.replace()` with a regex that matches the characters that need to be escaped, using a callback function to replace each escaped character instance with its associated unescaped character using a dictionary (object).
 
 ```js
-const unescapeString = str =>
-  str.replace(/&gt;/g, '>').replace(/&lt;/g, '<').replace(/&#39;/g, '\'').replace(/&quot;/g, '"').replace(/&amp;/g, '&');
-```
-
+const escapeHTML = str => str.replace(/[&<>'"]/g, tag => ({
+    '&amp;': '&',
+    '&lt;': '<',
+    '&gt;': '>',
+    '&#39;': '\'',
+    '&quot;': '"'
+  })[tag] || tag);```
 ```js
-unescapeString('&lt;a href=&quot;#&quot;&gt;Me &amp; you&lt;/a&gt;'); // '<a href="#">Me & you</a>'
+unescapeHTML('&lt;a href=&quot;#&quot;&gt;Me &amp; you&lt;/a&gt;'); // '<a href="#">Me & you</a>'
 ```