-
Understanding the problem domain is the hardest part of programming
-
Problem domains are hard because it is very difficult to solve a problem before you know the question
-
2 things you can do:
-
Make the problem domain easier
-
Get better at understanding the problem domain
-
-
Chapter 3: Object Literals
-
Objects group together a set of variables and functions to create a model
-
In an object: variables become known as properties
-
In an object: functions become known as methods
-
Example below: This object represents a hotel
-
var Hotel = { name: 'Quay'. rooms: 40, booked: 25, gym: true, roomTypes: ['twin', 'double', 'suite'], checkAvailability: function() { return this.rooms - this.booked; } }
-
Name, rooms, booked, gym, roomTypes are PROPERTIES
-
checkAvailability is the METHOD
-
-
-
Chapter 5: Document Object Model
-
DOM specifies how browsers should create a model of an HTML page and how JavaScript can access and update the contents of a web page while it is in the browser window
-
DOM is neither part of HTML nor part of JavaScript; it is a separate set of rules.
-
It is implemated by all browser makers and covers two areas:
-
Making a model of the HTML page
-
Accessing and changing the HTML page
-
DOM trees have four types of nodes: document nodes, element nodes, attribute nodes, and text nodes
-
You can select element nodes by their id or class attributes, by tag name, or using CSS selector syntax
-
Browsers off tools for viewing the DOM tree
-
-
Information taken from "Javascript & JQuery Interactive Front-End Web Development" by Jon Duckett and the web article Understanding the problem domain is the hardest part of programming