Unit 1 Chapter 3 & 4

Some Key Points from Chapter 3 & 4

• What are HTML elements: html, head, hyperlinks, title, body, h1, h2, h3, p, div, span, img, ul, ol, li, em, strong, a

• <a href="Link here">Content here</a>, where href stands for hypertext reference;

• Difference between id and class: each element can only have one id and each id can be used only once. In contrast, elements can have multiple class(separated by space), and each class can be used for multiple times.

• Comments: “<!-- Comments here -->”

• DOM stands for Document Object Model, which refers to “the hierarchical structure of HTML” (p.50).

• CSS: Cascading Style Sheets. How to use CSS: Check here.

• In CSS, a child adopts the style of the parent.

• JavaScript: Arrays, Objects, JSON (JavaScript Object Notation)

• SVG: Scalable Vector Graphics