Sunday, January 17

Tag: Event Bus

CSS Tricks, Javascript

Let’s Create a Lightweight Native Event Bus in JavaScript

An event bus is a design pattern (and while we’ll be talking about JavaScript here, it’s a design pattern in any language) that can be used to simplify communications between different components. It can also be thought of as publish/subscribe or pubsub.The idea is that components can listen to the event bus to know when to do the things they do. For example, a “tab panel” component might listen for events telling it to change the active tab. Sure, that might happen from a click on one of the tabs, and thus handled entirely within that component. But with an event bus, some other elements could tell the tab to change. Imagine a form submission which causes an error that the user needs to be alerted to within a specific tab, so the form sends a message to the event bus telling the tabs co...
Using Event Bus to Share Props Between Vue Components
CSS Tricks

Using Event Bus to Share Props Between Vue Components

By default, communication between Vue components happen with the use of props. Props are properties that are passed from a parent component to a child component. For example, here’s a component where title is a prop: <blog-post title="My journey with Vue"></blog-post> Props are always passed from the parent component to the child component. As your application increases in complexity, you slowly hit what is called prop drilling that is React-focused, but totally applies). Prop drilling is the idea of passing props down and down and down to child components — and, as you might imagine, it’s generally a tedious process.So, tedious prop drilling can be one potential problem in a complex. The other has to do with the communication between unrelated components. We can tackle a...