Tag: javascript

HTML5 Fullscreen Background Video with CSS and JS (Plugin/Library)

Fullscreen background videos that autoplay right when the webpage loads (above the fold) has become quite a popular trend these days. Personally I think a fullscreen good quality video that autoplays does increases engagement for the users/customers. It should be kept in mind that the story of the video must be relevant to the brand. These days we’re surrounded by loads of videos on social networks like FB and Twitter as well which autoplay (but is muted of course). Analytical studies have also reported higher engagement due to this.

Continue reading “HTML5 Fullscreen Background Video with CSS and JS (Plugin/Library)”

Getting Started with React – Setting up the Development Environment

React (also React.js or ReactJS) is a JavaScript library for building user interfaces developed by Facebook & Instagram. It is not a full blown framework like Angular or Ember or even Backbone.js. It is a very simple View library which can replace the V in any other client-side MVC framework, i.e., you can use Backbone and React together for instance. In fact a lot of people are already doing that. Although when combined with a design pattern like Flux, you can totally give up on an MVC framework for your client-side architecture and happily develop apps with just React in conjunction with the Flux application architecture. React encompasses some interesting concepts too like Virtual DOM, uni-directional reactive data flow, etc. but don’t worry we’ll discuss all those much later when you’re already comfortable with the library and hacking your way through it.

Continue reading “Getting Started with React – Setting up the Development Environment”

Compiling Next Generation JavaScript (ES6, ES7, React) in Browser with Babel 6 and Above

Babel is an amazing tool for writing ES6 (ES2015), ES7 (ES2016), JSX, etc. code that finally gets compiled (or transpiled) into JavaScript (mostly ES5 as of now) that can be executed by most browsers. So basically you can use JS features like classes, promises, etc. without worrying about the browser support as Babel will eventually convert all your code into browser-understandable program.

Continue reading “Compiling Next Generation JavaScript (ES6, ES7, React) in Browser with Babel 6 and Above”

JavaScript Fire onSubmit Event Handler Programmatically by Calling form.submit()

Unless you code your web pages in vanilla javascript, you’ll probably not notice this but when you do it’ll quite baffle you that the event listener you attach to a form’s submit event using addEventListener or onSubmit will not be invoked when you submit the form directly like this – form.submit().

Continue reading “JavaScript Fire onSubmit Event Handler Programmatically by Calling form.submit()”

Passing Data Across Components with Contexts (childContextTypes, getChildContext(), contextTypes) in ReactJS

Using React Contexts we can communicate across a hierarchy of Components. To understand this, think of a widget represented by a View component which has lots of child view components. You might use/re-use this component and want to pass certain properties or attributes that are relevant to different child components affecting the overall state (look and behaviour) of the main component in combination. Now one way to achieve this is by using props. But imagine passing an attribute all the way down from the parent to a child at the 5th level in the hierarchy. At every component level the property passed from the parent will have to be accessed (this.props.propName) and further passed down. This can get really messy. So let’s see how contexts can be used to pass data across components in a much elegant manner.

Continue reading “Passing Data Across Components with Contexts (childContextTypes, getChildContext(), contextTypes) in ReactJS”

Remove a Mounted React Component with React.unmountComponentAtNode()

While going through the codebase of React Bootstrap (for some reason), I came across an interesting implementation of a “React playground”. The code behind the playground is in ReactPlayground.js. I found this piece of interesting code there:

Continue reading “Remove a Mounted React Component with React.unmountComponentAtNode()”

React Integrating Routing to Material UI’s Left Nav (or Other Components)

Working with the React Material UI and trying to make routing work (or even understand how it works) with clicks on the LeftNav item items ? It’s actually quite simple once you get a hang of it. I’ll show you the code and explain the logic behind how on clicking navigation links in LeftNav you navigate to different pages/URLs in your app/website (in a snap). We’ll be using React Router, Material UI and obviously, ReactJS itself. I’ve also uploaded the code to Github.

Continue reading “React Integrating Routing to Material UI’s Left Nav (or Other Components)”