Software Testing: Browser Debugging
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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.

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    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.

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