heimdallrj

OOP in JavaScript

Creating a JavaScript Object

Object.create

function Book({name, author, year}) {
	const constructor = {
		getTitle: function() {

heimdallrj

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

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General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules

heimdallrj

Move directory from one repository to another but still preserve the history

Source Repository

git clone git@github.com:<user|org>/<src-repo>.git

cd <src-repo>
git remote rm origin
git filter-branch --subdirectory-filter  -- -- all

heimdallrj

Keybase proof

I hereby claim:

• I am thinkholic on github.
• I am thinkholic (https://keybase.io/thinkholic) on keybase.
• I have a public key ASBnhPdIw8TKISqTf0fcisC4vS0eIjr90WWjm7RvpXlQygo

To claim this, I am signing this object:

heimdallrj

Object.prototype.isEmpty = function() {
	var obj = this;

	for (var key in obj) {
    	if (obj.hasOwnProperty(key)) return false;
  	}
  	return true;
}

heimdallrj

class Validator {
  schema = null;

  constructor(schema) {
    this.schema = schema;
  }

  run(values) {
    const schema = this.schema;
    const errors = {};

heimdallrj

// JS/nodejs version for aunyks/snakecoin.py
// Original: https://gist.github.com/aunyks/8f2c2fd51cc17f342737917e1c2582e2

const sha256 = require('js-sha256');

// Define the Block Class
class Block {
  constructor(index, data, previousHash) {
    this.index = index;
    this.timestamp = new Date();

heimdallrj

    toTitleCase(str: string) {
      console.log('str: ', str);
      return str.toLowerCase().split(' ').map(function(word) {
        return (word.charAt(0).toUpperCase() + word.slice(1));
      }).join(' ');
    }
    
    https://medium.freecodecamp.org/three-ways-to-title-case-a-sentence-in-javascript-676a9175eb27

heimdallrj

// function helloEmail(){
//   var helper = require('sendgrid').mail

//   from_email = new helper.Email("test@example.com")
//   to_email = new helper.Email("test@example.com")
//   subject = "Hello World from the SendGrid Node.js Library"
//   content = new helper.Content("text/plain", "some text here")
//   mail = new helper.Mail(from_email, subject, to_email, content)
//   email = new helper.Email("test2@example.com")
//   mail.personalizations[0].addTo(email)

heimdallrj

.alerts {} /* block */
.alerts__error {} /* element */
.alerts--show {} /* state */