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 getVertices() {
    const cos = Math.cos(this.rotation)
    const sin = Math.sin(this.rotation)

    return [
      {
        x: this.position.x + cos * 30 - sin * 0,
        y: this.position.y + sin * 30 + cos * 0,
      },
      {

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/* This adds the animation to slide a div with text up and down. 

   However, I only want this to happen if the feature is supported (it is on most browsers --
   https://developer.mozilla.org/en-US/docs/Web/CSS/-webkit-text-fill-color) 
*/
@supports (-webkit-text-fill-color: transparent) {
  .container {
    /* hide the container above it's actual location */
    transform: translateY(-100%);
    transform-origin: top;

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React's Tutorial

Table of Contents

• Goal
• The Tutorial
• Post Tutorial
• Conclusion
• About the Author

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GraphQL, Sequelize, and an Apollo server - Comments on a tutorial

Table of Contents

• Introduction
• The Database
  • Configuration
  • Models
  • Migrations
• The Server

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RegEx Tutorial: Matching a [US] Phone Number

There are many times we need to validate the data that is entered is what we expect it to be. A common area we need to validate data for is a phone number. In the United States, although there is a proper format for the phone number, in this day of computers, many people don't use that format. Regex will allow us to test the most common formats of phone numbers for validity.

Table of Contents

• Introduction
• Regex Components
  • Area Code
• Exchange Code