chrome.md and objects.md committed

Author: carlosyabreu

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

@@ -16,3 +16,37 @@ Now try invoking the function `prompt` with a string input of `"What is your nam
 
 What effect does calling the `prompt` function have?
 What is the return value of `prompt`?
+
+Response:
+
+1. Call the alert function
+In the console, typing 'alert("Hello world!");'
+
+Effect:
+A small pop-up dialog box appears in the browser window with the message "Hello world!" and an OK button. The dialog is modal, so it blocks interaction with the web page until you click OK.
+
+2. Call the prompt function typing:
+
+let myName = prompt("What is your name?");
+
+Effect:
+Another pop-up appears, this time with the message "What is your name?", a text input field, and OK/Cancel buttons.
+
+When typed something and press OK, the string typed is returned and stored in the variable myName.
+If pressed Cancel or close the dialog without entering anything, the return value is null.
+
+3. Check the return value
+After entering a name (e.g., "Carlos") and clicking OK, you can check:
+
+console.log(myName);
+Output in the console:
+
+Carlos
+
+In summary:
+alert() displays a message and returns nothing (undefined).
+prompt() displays a message with an input field and returns either of one value:
+
+The input string (if OK is clicked)
+null (if Cancel is clicked or the dialog is closed without input)
+

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

@@ -6,11 +6,58 @@ Open the Chrome devtools Console, type in `console.log` and then hit enter
 
 What output do you get?
 
+When you typed console.log in the Console and hit Enter, shows something like:
+
+ƒ log() { [native code] }
+This shows that console.log is a function (indicated by the ƒ symbol) that's built into the browser (hence "[native code]").
+
 Now enter just `console` in the Console, what output do you get back?
 
+When typed console in the Console, it displays an object that looks something like:
+
+Console {debug: ƒ, error: ƒ, info: ƒ, log: ƒ, warn: ƒ, …}
+This shows that console is an object containing many methods.
+
 Try also entering `typeof console`
 
+Typing typeof console returns:
+
+"object"
+This confirms that console is an object data type.
+
+console stores a collection of methods and properties used for debugging and logging information in the browser. It's a built-in object that provides access to the browser's debugging console. It contains methods like:
+
+log() - for general output
+
+error() - for error messages
+
+warn() - for warnings
+
+info() - for informational messages
+
+assert() - for conditional logging
+
+table() - for displaying tabular data
+
+clear() - for clearing the console
+
+And many more
+
 Answer the following questions:
 
 What does `console` store?
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+
+The dot (.) is the member access operator (also called the property accessor) in JavaScript.
+
+When it shows console.log:
+
+console is the object
+
+. means "access a property of this object"
+
+log is a property of the console object (specifically a method, which is a function stored as a property)
+
+So console.log means "access the log property of the console object." Since log is a function, we can then call it with parentheses: console.log("Hello").
+This dot notation is how JavaScript allows objects to contain related data and functionality, organizing code into logical groups.
+