These are my reading notes for Code Fellows
Domain modeling is the process of creating a conceptual model in code for a specific problem
-Ryan Sobol, Sam Hamm, Keli Hansen
-https://github.com/codefellows/domain_modeling#domain-modeling
Determine the metrics whose variables you can easily change. In the reading’s example, the popularity of a sample video can be determined by a 1-10 rating, and a true/false value. To determine popularity, you just have need to factor in 2 measurable variables.
New term: instantiated.
to call a constructor of a Class which creates an an instance or object, of the type of that Class
new instantiates an object.
this variable initializes properties of an object – (is this still necessary?)
This article is a perfect summary of what we did in lab today!
Create table wit <table>
<tr> indicates the start of each row
<td> represents the data in the cell
<th> = table heading – remember to add info to an empty cell otherwise formatting will be wonky
<td colspan="[number here]"> allows one cell to extend across multiple columns
<td rowspan="[number here]"> allows one cell to extend across multiple rows
<thead> contains table headings
<tbody> contains the body of the table
<tfoot> contains the footer
Note: <thead>, <tbody>, and <tfoot> are for really long/tall tables that will display the header and footer even if a user scrolls
Objects allow you to store many pieces of data within one function. Objects can have many things like names, descriptions, heights, locations, numbers, etc.
Create many objects like so:
function restaurant(name, tables, reserved) {
this.name = name;
this.tables = tables;
this.reserved = reserved;
}
Then add any new restaurants by doing this:
let timsRestaurant = new restaurant('Tim\'s Restaurant', 30, 10);
let marisasRestaurant = new restaurant(Marisa\'s Restaurant', 20, 18);
You can use the above information to dynamically update a web page to display the available tables at either Tim’s Restaurant or Marisa’s Restaurant. You’d just have the reserved subtracted from tables!
As we learned in Lab06, arrays are objects! They just hold many pieces of data that you can access with an index number (usually “i”).
document.write() - simply displays text
document.getElementById() - returns an element
document.querySelectorAll() - shows a list of elements that correspond with a CSS selector
` document.createElement` - creates an element
document.createTextNode - creates a text node
Really helpful ways of selecting particular elements of a string (just lower case letters/just character # 5, just the very last character, delete white space, etc.) on page 128-129 of Jon Duckett’s JavaScript & JQuery.
An object is considered a “complex data type.”
An integer = a whole number
Math.round() rounds to nearest integer
Math.ceil() rounds up to nearest integer
Math.floor() rounds down to nearest integer
Math.random() creates a random number