completed stretch chrome.md and objects.md with comments

Author: AngelaMcLeary

Sprint-1/4-stretch-explore/chrome.md

@@ -9,10 +9,18 @@ Let's try an example.
 
 In the Chrome console,
 invoke the function `alert` with an input string of `"Hello world!"`;
+alert('Hello World!');
 
 What effect does calling the `alert` function have?
+A pop up modal box appears with "Hello World!"
 
 Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`.
+let myName = prompt("What is your name?");
 
 What effect does calling the `prompt` function have?
+It displays a modal dialog box with a text input field which can be completed.
+
 What is the return value of `prompt`?
+It is hidden, it does not display anything. The box closes.
+When I do a console.log(myName); it returns Angela.
+

Sprint-1/4-stretch-explore/objects.md

@@ -5,12 +5,21 @@ In this activity, we'll explore some additional concepts that you'll encounter i
 Open the Chrome devtools Console, type in `console.log` and then hit enter
 
 What output do you get?
+ƒ log() { [native code] }
 
 Now enter just `console` in the Console, what output do you get back?
+console {debug: ƒ, error: ƒ, info: ƒ, log: ƒ, warn: ƒ, …}
 
 Try also entering `typeof console`
+'object'
 
 Answer the following questions:
 
 What does `console` store?
-What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+It does not store anything. Its purpose is to hold a collection of methods (functions) that help you debug, log, or inspect your code.
+
+What does the syntax `console.log` or `console.assert` mean?,
+They print outputs.It provides methods for debugging, logging, and inspecting code.
+
+In particular, what does the `.` mean?
+The dot is a member access operator that connects the object to its property or method.