reading-notes

Domain Modeling

Domain modeling is the process of creating a conceptual model in code for a specific problem. A model describes the various entities, their attributes and behaviors, as well as the constraints that govern the problem domain. An entity that stores data in properties and encapsulates behaviors in methods is commonly referred to as an object-oriented model.

Table in html

A table represents information in a grid format. Examples of tables include financial reports, TV schedules, and sports results.

Basic Table Structure

The <table> element is used to create a table. The contents of the table are written out row by row.

You indicate the start of each row using the opening <tr> tag. (The tr stands for table row.)

Each cell of a table is represented using a <td> element. (The td stands for table data.) At the end of each cell you use a closing </td> tag

The <th> element is used just like the <td> element but its purpose is to represent the heading for either a column or a row. (The th stands for table heading.)

• example of table

Functions is js

Functions are one of the fundamental building blocks in JavaScript. A function in JavaScript is similar to a procedure a set of statements that performs a task or calculates a value, but for a procedure to qualify as a function, it should take some input and return an output where there is some obvious relationship between the input and the output.

• To use a function, you must define it somewhere in the scope from which you wish to call it.

Defining functions

• The name of the function.
• A list of parameters to the function, enclosed in parentheses and separated by commas.
• The JavaScript statements that define the function, enclosed in curly brackets, {…}.

for example

function square(number) {
  return number * number;
}

Methods example

const person = {
  firstName: "John",
  lastName: "Doe",
  id: 5566,
  fullName: function () {
    return this.firstName + " " + this.lastName;
  },
};