further explanation (#27620)

guide/english/javascript/tutorials/iterate-with-javascript-while-loops/index.md

@@ -1,11 +1,13 @@
 ---
 title: Iterate with JavaScript While Loops
 ---
-Another type of JavaScript loop is called a `while loop` because it runs `while` something is true, and stops once that something is no longer true.
+Another type of JavaScript loop is called a `while loop` because it runs `while` something is true, and stops once that something is no longer true. Unlike the `for loop`, which is made up of three parts, the `while loop` only contains a condition statement.
 
     var ourArray = [];
     var i = 0;
     while(i < 5) {
       ourArray.push(i);
       i++;
-    }
+    }
+ 
+ It is important to remember to increase the variable used in this example, without the addition of `i++` the loop would continue forver.