Software Testing: Browser Debugging

Questions and Answers

What key combination is used to open the debug panel in most web browsers, specifically Google Chrome?

Ctrl-Shift-I (correct)

Ctrl-Alt-D

Shift-Ctrl-I

Alt-Shift-D

What is the purpose of the 'greeting' function in the JavaScript code?

To concatenate strings

To create a pop-up message (correct)

To display a greeting without parameters

To return a welcome message directly

Which statement accurately describes the 'popup' function?

It returns a string without displaying it to the user.

It directly modifies the web page content.

It takes no parameters and generates a console log.

It alerts a formatted welcome message to the user. (correct)

What will the output be if 'greeting' is called with the argument 'Earthling'?

<p>Welcome, Earthling!</p> Signup and view all the answers

What is a common feature of web browser debugging tools?

<p>They allow developers to inspect and modify JavaScript code.</p> Signup and view all the answers

Study Notes

Browser Debugging Overview

Most web browsers include built-in debugging tools for troubleshooting web applications.
Google Chrome is a widely used browser with robust debugging capabilities.

Debugging Tools in Google Chrome

Access the debug panel using the shortcut Ctrl + Shift + I.
The debug panel offers developer tools to inspect HTML/CSS, monitor console messages, and debug JavaScript.

Example Program: Greeting Function

The example program consists of HTML and JavaScript files to demonstrate debugging techniques.
The JavaScript file, greeting.js, contains two functions: greeting and popup.

Function Breakdown

greeting(name):
- Accepts a name as a parameter.
- Constructs a welcome phrase using template literals.
- Calls the popup function to display the message.
popup(phrase):
- Receives a phrase as a parameter.
- Displays the phrase in an alert box, formatted with asterisks for emphasis.

Debugging Steps

Set breakpoints in the JavaScript code to pause execution and inspect variables.
Use the console to log output and trace function calls during execution.
Modify code in real-time within the debug panel to test changes quickly.

Description

This quiz focuses on using debugging tools in web browsers, specifically Google Chrome. You will learn how to troubleshoot and debug JavaScript code in web applications. Practical examples, including a greeting function, will be discussed to enhance your understanding of browser debugging.