feat: cleaned up grammar and formatting (#35364)

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/iterate-with-javascript-do...while-loops.english.md

@@ -7,23 +7,22 @@ videoUrl: 'https://scrimba.com/c/cDqWGcp'
 
 ## Description
 <section id='description'>
-You can run the same code multiple times by using a loop.
-The next type of loop you will learn is called a "<code>do...while</code>" loop because it first will "<code>do</code>" one pass of the code inside the loop no matter what, and then it runs "<code>while</code>" a specified condition is true and stops once that condition is no longer true. Let's look at an example.
+The next type of loop you will learn is called a "<code>do...while</code>" loop.  It is called a <code>do...while</code> loop because it will first "<code>do</code>" one pass of the code inside the loop no matter what, and then continue to run the loop "<code>while</code>" the specified condition evaluates to <code>true</code>.
 <blockquote>var ourArray = [];<br>var i = 0;<br>do {<br>&nbsp;&nbsp;ourArray.push(i);<br>&nbsp;&nbsp;i++;<br>} while (i < 5);</blockquote>
-This behaves just as you would expect with any other type of loop, and the resulting array will look like <code>[0, 1, 2, 3, 4]</code>. However, what makes the <code>do...while</code> different from other loops is how it behaves when the condition fails on the first check. Let's see this in action.
-Here is a regular while loop that will run the code in the loop as long as <code>i < 5</code>.
+The example above behaves similar to other types of loops, and the resulting array will look like <code>[0, 1, 2, 3, 4]</code>. However, what makes the <code>do...while</code> different from other loops is how it behaves when the condition fails on the first check. Let's see this in action:
+Here is a regular <code>while</code> loop that will run the code in the loop as long as <code>i < 5</code>:
 <blockquote>var ourArray = []; <br>var i = 5;<br>while (i < 5) {<br>&nbsp;&nbsp;ourArray.push(i);<br>&nbsp;&nbsp;i++;<br>}</blockquote>
-Notice that we initialize the value of <code>i</code> to be 5. When we execute the next line, we notice that <code>i</code> is not less than 5. So we do not execute the code inside the loop. The result is that <code>ourArray</code> will end up with nothing added to it, so it will still look like this <code>[]</code> when all the code in the example above finishes running.
-Now, take a look at a <code>do...while</code> loop.
+In this example, we initialize the value of <code>myArray</code> to an empty array and the value of <code>i</code> to 5. When we execute the <code>while</code> loop, the condition evaluates to <code>false</code> because <code>i</code> is not less than 5, so we do not execute the code inside the loop. The result is that <code>ourArray</code> will end up with no values added to it, and it will still look like <code>[]</code> when all of the code in the example above has completed running.
+Now, take a look at a <code>do...while</code> loop:
 <blockquote>var ourArray = []; <br>var i = 5;<br>do {<br>&nbsp;&nbsp;ourArray.push(i);<br>&nbsp;&nbsp;i++;<br>} while (i < 5);</blockquote>
-In this case, we initialize the value of <code>i</code> as 5, just like we did with the while loop. When we get to the next line, there is no check for the value of <code>i</code>, so we go to the code inside the curly braces and execute it. We will add one element to the array and increment <code>i</code> before we get to the condition check. Then, when we get to checking if <code>i < 5</code> see that <code>i</code> is now 6, which fails the conditional check. So we exit the loop and are done. At the end of the above example, the value of <code>ourArray</code> is <code>[5]</code>.
+In this case, we initialize the value of <code>i</code> to 5, just like we did with the <code>while</code> loop. When we get to the next line, there is no condition to evaluate, so we go to the code inside the curly braces and execute it.  We will add a single element to the array and then increment <code>i</code> before we get to the condition check. When we finally evaluate the condition <code>i < 5</code> on the last line, we see that <code>i</code> is now 6, which fails the conditional check, so we exit the loop and are done. At the end of the above example, the value of <code>ourArray</code> is <code>[5]</code>.
 Essentially, a <code>do...while</code> loop ensures that the code inside the loop will run at least once.
 Let's try getting a <code>do...while</code> loop to work by pushing values to an array.
 </section>
 
 ## Instructions
 <section id='instructions'>
-Change the <code>while</code> loop in the code to a <code>do...while</code> loop so that the loop will only push the number 10 to <code>myArray</code>, and <code>i</code> will be equal to <code>11</code> when your code finishes running.
+Change the <code>while</code> loop in the code to a <code>do...while</code> loop so the loop will push only the number <code>10</code> to <code>myArray</code>, and <code>i</code> will be equal to <code>11</code> when your code has finished running.
 </section>
 
 ## Tests
@@ -31,13 +30,12 @@ Change the <code>while</code> loop in the code to a <code>do...while</code> loop
 
 ```yml
 tests:
-  - text: You should be using a <code>do...while</code> loop for this.
-    testString: assert(code.match(/do/g), 'You should be using a <code>do...while</code> loop for this.');
+  - text: You should be using a <code>do...while</code> loop for this exercise.
+    testString: assert(code.match(/do/g), 'You should be using a <code>do...while</code> loop for this exercise.');
   - text: <code>myArray</code> should equal <code>[10]</code>.
     testString: assert.deepEqual(myArray, [10], '<code>myArray</code> should equal <code>[10]</code>.');
   - text: <code>i</code> should equal <code>11</code>
-    testString: assert.deepEqual(i, 11, '<code>i</code> should equal <code>11</code>');
-
+    testString: assert.equal(i, 11, '<code>i</code> should equal <code>11</code>');
 ```
 
 </section>
@@ -52,13 +50,11 @@ tests:
 var myArray = [];
 var i = 10;
 
-// Only change code below this line.
-
+// Only change code below this line
 while (i < 5) {
   myArray.push(i);
   i++;
 }
-
 ```
 
 </div>