jQuery(Write less, do more)

• jQuery: JavaScript file that you include in your web pages . offers a simple way to achieve a variety of common JavaScript tasks quickly and consistently, across all major browsers and without any fallback code needed.

• Select elements
• Perform tasks
• Handle events

Why use JQuery

• Simple selectors
• Common tasks in less code
• The • htm 1 () and • text () methods both retrieve and update the content of elements.
• Getting and setting attribute values (.attr() , . removeAttr() , . addClass() , .removeClass())
• Inserting elements ( .before() , .after() , .prepend() , .append()
• Working with each element in aselection ( .each() , this or $(this) )

The position of elements can affect how quickly a web page seems to load.

BASIC EFFECTS:

• . show() Displays selected elements
• . hi de() Hides selected elements
• . togg 1 e () Toggles between showing and hiding selected elements

  FADING EFFECTS

• .fadeln() Fades in selected elements making them opaque
• .fadeout() Fades out selected elements making them transparent
• .fade To() Changes opacity of selected elements
• .fade Togg 1 e (} Hides or shows selected elements by changing their opacity (the opposite of their current state) ______

  Notes

DOM

The HTML DOM is an Object Model for HTML. It defines:

HTML elements as objects

Properties for all HTML elements

Methods for all HTML elements

Events for all HTML elements

The HTML DOM is an API (Programming Interface) for JavaScript:

JavaScript can add/change/remove HTML elements

JavaScript can add/change/remove HTML attributes

JavaScript can add/change/remove CSS styles

JavaScript can react to HTML events

JavaScript can add/change/remove HTML events

Some OF Pair Programming Advantages

• Two heads are better than one.

If the driver encounters a hitch with the code, there will be two of them who’ll solve the problem.

• More efficient.

Common thinking is that it slows down the project completion time because you are effectively putting two programmers to develop a single program, instead of having them work independently on two different programs. But studies have shown that two programmers working on the same program are only 15% slower than when these programmers work independently, rather than the presupposed 50% slow down.

• Develops your staff’s interpersonal skills.

Collaborating on a single project helps your team to appreciate the value of communication and teamwork.