Learning D3.JS 5.0 4.6: The classed() and style() Methods

The video tutorial covers methods for managing HTML attributes and classes, including the use of the classed method to add or remove classes based on boolean values. It also explains how to apply inline styles using parameters. The tutorial concludes with a summary of the methods learned and a preview of upcoming topics, such as data handling and functions in D3.js.

What happens when you add a new attribute using the attribute method?

• It duplicates the original value.

• It merges the new value with the original one.

• It removes the original value and replaces it with the new one.

• It appends the new value to the existing one.

How does the 'classed' method help in managing class names?

• It allows adding or removing classes based on boolean values.

• It duplicates class names.

• It merges multiple class names into one.

• It only adds new class names without removing any.

What is the first parameter in the 'classed' method?

• The boolean value.

• The class name.

• The style name.

• The attribute name.

What is the purpose of the 'style' method in HTML?

• To duplicate existing styles.

• To apply inline styles to elements.

• To add multiple class names.

• To remove existing styles.

What upcoming topic is mentioned in the video?

• Advanced CSS techniques.

• Loading data from external resources.

• Building a complete website.

• Creating animations with JavaScript.