From 71177b5465d0dfb6dd335b51290a2e446d775234 Mon Sep 17 00:00:00 2001
From: JMVL64 <hanna.van.leent@hotmail.com>
Date: Tue, 27 Nov 2018 10:25:55 +0100
Subject: [PATCH] Added warning for infinite while statements (#22805)

---
 .../javascript/loops/while-loop/index.md      | 75 ++++++++++++-------
 1 file changed, 47 insertions(+), 28 deletions(-)

diff --git a/guide/english/javascript/loops/while-loop/index.md b/guide/english/javascript/loops/while-loop/index.md
index 33235c65ea..c810168fd7 100644
--- a/guide/english/javascript/loops/while-loop/index.md
+++ b/guide/english/javascript/loops/while-loop/index.md
@@ -1,42 +1,61 @@
 ---
 title: While Loop
 ---
-The while loop starts by evaluating the condition. If the condition is true, the statement(s) is/are executed. If the condition is false, the statement(s) is/are not executed. After that, while loop ends.
+The `while` loop starts by evaluating the condition. If the condition is true, the statement(s) is/are executed. If the condition is false, the statement(s) is/are not executed and the `while` loop ends. `while` loops deserve some attention, since you will create an infinite loop if the false condition is never met. An infinite loop can crash your application or browser, so make sure all the `while` loops in your code are finite.
 
-Here is the **syntax** for while loop:
+Here is the **syntax** for the `while` loop:
 
 ## Syntax:
-
-    while (condition)
-
-    {
-
-      statement(s);
-
-    }
-
+```javascript
+while (condition) {
+  statement(s);
+}
+```
 _statement(s):_ A statement that is executed as long as the condition evaluates to true.
 
 _condition:_ Here, condition is a Boolean expression which is evaluated before each pass through the loop. If this condition evaluates to true, statement(s) is/are executed. When condition evaluates to false, execution continues with the statement after the while loop.
 
 ## Example:
+```javascript
+let i = 1;
+while (i < 10) {
+  console.log(i);
+  i++; // same as i = i + 1
+}
 
-        var i = 1;
-        while (i < 10) 
-        {
-          console.log(i);
-           i++; // i=i+1 same thing
-        }
+Output:
+1 
+2 
+3 
+4
+5
+6
+7
+8
+9
+```
 
-        Output:
-        1 
-        2 
-        3 
-        4
-        5
-        6
-        7
-        8
-        9
+## Example of an infite loop:
+```javascript
+let x = 0;
+while (x < 10) {
+  console.log(x);
+  x--; // same as i = i - 1
+}
 
-*Source: [While Loop - MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/while)*
+Output:
+0
+-1
+-2
+-3
+-4
+-5
+-6
+-7
+-8
+-9
+...etc.
+```
+
+### Other Resources
+* [MDN - while](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/while)