Using the Console

This video tutorial covers the use of a live server and the console in web development. It explains how to set up and stop a live server, and focuses on using the console for testing and debugging JavaScript code. The tutorial demonstrates logging various data types, including strings, numbers, booleans, arrays, and objects, and introduces advanced console features like logging errors and using console utilities such as clear, warn, and time. The video aims to familiarize viewers with the console's capabilities for efficient coding and debugging.

What is the primary purpose of using a live server in web development?

• To automatically refresh the browser when files change

• To host websites on the internet

• To debug server-side code

• To edit HTML files directly in the browser

Which key combination opens the developer tools in most browsers?

• F12

• Shift + Esc

• Alt + F4

• Ctrl + D

How can you change the color of an H1 element to red using the console?

• document.querySelector('H1').style.color = 'red';

• document.getElement('H1').color = 'red';

• document.changeColor('H1', 'red');

• document.style('H1').color = 'red';

What color are numbers displayed in the Chrome console?

• Black

• Red

• Blue

• Green

Which console method can be used to display an object as a table?

• console.table()

• console.displayTable()

• console.showTable()

• console.logTable()

What is the purpose of console.error in JavaScript?

• To measure execution time

• To clear the console

• To log messages in green

• To display error messages in red

How can you measure the time taken by a block of code using the console?

• console.timeMeasure()

• console.startTimer()

• console.time() and console.timeEnd()

• console.timer()