2.3.9 Nested Views Codehs -

This is the #1 source of bugs. For every <LinearLayout> you open, you must have a matching </LinearLayout> closing tag.

A: Yes! CodeHS allows unlimited nesting (e.g., Tab > Panel > Group > Button ). However, for 2.3.9, two levels (parent + direct children) are sufficient.

Positioned relative to the main window canvas (0,0 is the top-left corner of the screen). 2.3.9 nested views codehs

Let’s write a practical solution. Suppose we need to create a (the parent) that contains a profile picture (Circle), a username (Text), and a "Follow" button (Rectangle + Text).

A: You likely forgot to add the parent view to the main tab or forgot to call start() . This is the #1 source of bugs

Ensure every declared object variable is explicitly instantiated before usage. Best Practices for Clean Code

Acts as a container or wrapper. It dictates the overall positioning, background color, and layout rules for everything inside it. CodeHS allows unlimited nesting (e

function ListView(items) const container = createDiv('list'); items.forEach(it => const row = RowView(it, selected => console.log('selected', selected)); container.appendChild(row); ); return container;

Always use instance variables ( this.x + offset ) so that if the parent view moves, the nested components automatically move with it. 2. Confusing Width and Height Parameters