- #HOW TO HAVE A COMPONENT TRIGGER AN EVENT IN PRINCIPLE APP HOW TO#
- #HOW TO HAVE A COMPONENT TRIGGER AN EVENT IN PRINCIPLE APP FULL#
- #HOW TO HAVE A COMPONENT TRIGGER AN EVENT IN PRINCIPLE APP CODE#
You’ll need useState to manage the application state when the user chooses to view the tooltip.
#HOW TO HAVE A COMPONENT TRIGGER AN EVENT IN PRINCIPLE APP CODE#
The next code block imports React, useState from React, and the css file we created earlier.
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Since React allows you to write component-based code, the code for the main tooltip functionality would, indeed, be a component. We’ll write the code for Tooltip.css later in the article. Now, in Tooltip.js, let’s write some code.
#HOW TO HAVE A COMPONENT TRIGGER AN EVENT IN PRINCIPLE APP FULL#
Click here to see the full demo with network requests Creating a React tooltipįirst, you’ll need to set up a React project if you don’t already have one. They are onMouseEnter and onMouseLeave.įor this demonstration, you’ll create a tooltip, which is a UI element whose content is shown when a user hovers over a webpage element.
#HOW TO HAVE A COMPONENT TRIGGER AN EVENT IN PRINCIPLE APP HOW TO#
In this section, I’ll demonstrate how to create a hover event using two event handlers supported by React’s SyntheticEvent. How to create hover events using SyntheticEvent Let’s take a look at this in the next section. This is what we’re here to talk about - and luckily, there is a workaround. You’ll notice as you read through them that there is no onHover, which would allow you to create a hover event. The available Mouse Events are listed in the next code block. React supports an array of SyntheticEvent types, but for this article, our main concern is Mouse Events. SyntheticEvent is React’s cross-browser wrapper that wraps around the browser’s native event, which allows your events to work identically across all browsers. Your event handlers receive instances of the SyntheticEvent.You cannot return false to prevent a default behavior as you would in JavaScript instead, you must explicitly call preventDefault.The event handlers are named using the camel-case convention.
![how to have a component trigger an event in principle app how to have a component trigger an event in principle app](https://f.hubspotusercontent40.net/hubfs/318095/hub_generated/resized/5feab36a-dd46-4e56-90d1-d507c2b9d285.png)
React handles events that you would usually write in vanilla JavaScript, but with some key differences: The latter allows you to show other components on hover. The first will make use of two event handlers supported by React SyntheticEvent, and the second employs an npm library called React Hover. This article explains two alternative ways you can overcome these limitations in React. You can’t use it to show other components on hover.You can’t make changes or alter the actual :hover selector through JavaScript.You can achieve a basic hover event in React by using the native CSS :hover selector, but there are two limitations that you can encounter: Creating hover events with SyntheticEvent and React Hover
![how to have a component trigger an event in principle app how to have a component trigger an event in principle app](https://media.nngroup.com/media/articles/opengraph_images/Visual-Design-Principles-Social-Media-Posts_2020.png)
Habdul Hazeez Follow I teach and write code with interests in web development, computer security, and artificial intelligence.