Week Nine lecture notes (MGDP2050)

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The page has lecture notes for Week Nine (MGDP2050).

jQuery UI

jQuery UI is a set of interactive components for web pages.

It is built on jQuery. In order to use jQuery UI, you also need jQuery.

Mixing jQuery UI and Bootstrap

Many of the features in jQuery UI are similar to features in Bootstrap (framework).

Using features from two libraries is not uncommon.

You will probably need to write some custom CSS (and perhaps custom JavaScript).

One library is probably preferable -- simpler, easier.

But sometimes a project is committed to "Library A", which lacks a certain feature. Options include:

  • Also using "Library B", which has the feature. (Easy.)
  • Writing a plug-in for "Library A". (Difficult.)

Web applications

This module will discuss web applications in more depth.

Libraries and frameworks

Libraries and frameworks are similar and overlapping concepts.

There is no formal definition of which does what. The terms are used somewhat differently, in various sub-fields of computer science. Opinions vary from one software developer to another.

I think of it this way:

  • A library is a smaller concept: more like a toolbox
  • A framework is a larger concept: more like an automobile (or better yet, an automobile factory)

See Libraries and frameworks (computing) for more detailed discussion.

Backbone.js

Backbone.js is a JavaScript library which is widely used to build single-page applications.

Ajax

Ajax is a programming paradigm, widely used in web design and development.

Ajax is a number of things, the most important being the fact that JavaScript can:

  • Send requests from a browser
  • Receive responses from the server
  • Update the browser's Document Object Model -- in other words, what the user sees (or hears) in the browser.

Ajax happens without the user browsing from page to page, handled automatically by JavaScript.

Horizonal rule

In HTML, the hr element instructs the browser to display a horizontal rule.

Question for open discussion: how does this element relate to the separation of concerns in web design?

See also

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