This post includes a list of questions I was asked when interviewing for front end engineering positions last year.
There are many advantages of adding a preloader to your website. Not only can this produce a nice visual effect, it can, more importantly, allow time for images and other assets to load.
If you think of an individual tweet as a Handlebars template, you can understand why it would be expensive to compile a template each time a tweet is rendered. Precompiling templates saves time on the client side by reducing your application’s runtime.
Node.js is tiny and wasn’t really meant to build websites, which is why frameworks like Express.js are useful. Express gives Node structure so you can build a functional website. Along with a templating engine such as Handlebars.js, Node can be used to build fully functional web applications.
If you do any front end development, you will have to navigate your DOM and properly target DOM elements. Several jQuery functions exist to traverse the DOM. Having a strong command of the most common traversal functions will speed up your development time immensely.
Templates are useful when building web applications by allowing you to easily display repeating data. Handlebars.js is a templating engine that allows you to take repeating data and display it in an organized fashion.