Author
Jason Seifer is a web developer, podcaster, world traveler, astronaut, and more. He also teaches at Treehouse. You can find him on Twitter @jseifer.
August 24, 2021 in Learn
TL;DR: In HTML5 it is not strictly necessary to close certain HTML tags. Tags that aren’t required to have specific closing tags are called self-closing tags. What is a self closing tag? An example of a self closing tag is…
July 6, 2015 in Learn
If you’ve worked with a Rails application, you’ve used the rails command. In this post, we’re going to go in depth with the rails command and find out what it does. For the purposes of this post, placeholder text will…
May 27, 2015 in Learn
Roll Your Own Static Pages in a Rails App Have you ever wanted to create static pages in a Rails application? These are pages which don’t necessarily contain any dynamic info or pull from the database, and don’t require an…
December 30, 2014 in Learn
It’s Tuesday which means that the Treehouse Show is back! In episode 121 of The Treehouse Show, Nick (@nickrp) and Jason (@jseifer) talk about multi-touch gestures, logic in UI, SVG animation, and more. For a free month’s trial, Join Jason…
October 20, 2014 in Career Advice
Part of my job as the Ruby teacher for Treehouse is to stay on top of what employers are looking for when hiring people to fill Ruby and Rails positions. The landscape changes often but below are some of the trends…
September 12, 2014 in Learn
Throughout the course of your Rails career, you’re bound to have to work on an existing Rails application. If you’re doing consulting, this can be a process you have to go through time and time again in order to get…
August 4, 2014 in Learn
MiniTest is the preferred method of testing in Ruby 1.9.3 and up. Ruby is currently at version 2.1.2, so if you haven’t taken a look at MiniTest just yet, I recommend checking it out. There are some compelling features of…
June 3, 2014 in Learn
It’s Tuesday which means that the Treehouse Show is back! In episode 93 of The Treehouse Show, Nick (@nickrp) and Jason (@jseifer) talk about parallax scrolling, the Pictuefill project for picture element polyfills, projects to refine your CSS, and more….
November 26, 2013 in Learn
It’s Tuesday which means that the Treehouse Show is back! In episode 67 of The Treehouse Show, Nick and Jason (@jseifer) talk about responsive HTML email, fullscreen mobile apps, WebGL and much more. There’s also the usual round up of…
June 6, 2013 in Learn
In this Treehouse Quick-Tip, Jason Seifer shows you how to use the Select2 Plugin with Ruby on Rails. Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.
April 11, 2013 in Learn
The “each” method in Ruby on Rails allows you to iterate over different objects inside an array-like structure. It’s an important part of development in Ruby, and Treehouse’s Ruby teacher, Jason, explains how to use it effectively in this Treehouse…
November 7, 2012 in Learn
The Rails core team recently introduced a project called strong parameters. Strong parameters is the latest tool in the fight against mass assignment vulnerabilities. Let’s take the problem of your typical web form that creates a user. Your code might…