Layers (Cambridge (CIE) IGCSE ICT)

Layers

What are layers?

• A webpage is made of three layers, a layer is one specific part of a webpage

• A benefit of a layered approach is that issues can be addressed independently

• This allows teams to specialise in each area and work efficiently

• Webpages consist of a:

  • Content layer

  • Presentation layer

  • Behaviour layer

Content layer

• The content layer forms the structure of a web page

• This is where text, images, and other content that make up the body of the web page are entered

• It's typically constructed using HTML (Hypertext Markup Language)

Presentation layer

• The presentation layer is used to display and format elements within a web page

• It controls how the content looks, including layout, colours, fonts, and more

• This layer is mainly handled by CSS (Cascading Style Sheets)

Behaviour layer

• The behaviour layer uses scripting languages to control elements within a web page

• It enables interactive elements and complex functionality, such as form validation, image sliders, and dynamic content updates

• JavaScript is the primary language used for the behaviour layer