Web and Mobile Development articles
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()”
Writing CSS is really simple, we’ve been doing that since many years. But the problem is, in larger projects where the CSS code grows over thousands of lines, whether you’re alone or it is a team maintaining and building on the code, it gets really unwieldy (spaghetti code). Code gets hard to maintain, harder to debug, unoptimized leading to poor performance and highly inefficient. New team members start adding more code (classes, IDs, etc.) and start using them leading to a lot of redundant and unoptimized code here and there. Basically it gets hard, really hard. You end up into too many issues.
Continue reading “An Overview of OOCSS, BEM, SMACSS (CSS Methodologies/Practices) with References”
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)”
This is more of a quick tip on a Material UI integration than a detailed article. We’ll see how to open the LeftNav component on clicking the AppBar’s left icon (hamburger menu icon). Unfortunately the documentation as of now doesn’t show the ReactJS code for this. Obviously it’s not too hard to figure it out either if you go through the website’s source itself on Github.
Using the cut and copy commands via document.execCommand(), a text selection can be cut or copied to the user’s clipboard in Chrome 43+, Opera 29+ and IE 10+. This means we can now cater to a part of our web userbase with the copy to clipboard feature without using Flash. Let’s write some code to see these commands in action.
The JS document.execCommand() method is quite interesting. It can be used to execute certain commands to play with an editable region that is achieved either via the contenteditable attribute or when the HTML document (of the main window or some iframe window) has been switched to designMode using this code:
document.designMode = 'on'; // or 'off' // or for an iframe iframeNode.contentDocument.designMode = 'on'; // or 'off')
Infact try the first snippet right in dev tools and see what happens 🙂
Continue reading “JavaScript document.execCommand() Web Method”
Before we go through a lot of code samples, make sure you understand the different testing terms like mocks, stubs and test doubles. That’ll help you understand this article much better as I use a lot of those terminologies while going through different code samples.
A test double is a generic term (for stubs and mocks) that represents a real object (but sort of fake) to which messages can be passed (method calls) and fake return values can be specified. It’s used in unit testing to test a particular system or object in isolation. In this article we’ll go through test doubles (mocks) in RSpec. Let’s see how to create a test double representing the object being faked.
Continue reading “Quick Walkthrough of RSpec Mocks (Introduction) in Code”