React - Forms and Events

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ReactJS
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React Event Forms
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The course is part of this learning path

ReactJS: Zero to Hero
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14
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React Event Forms
Overview
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Beginner
Duration
7m
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251
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Description

This module looks at React Event Forms.  

Learning Objectives 

The objectives of this module are to provide you with an understanding of: 

  • React event forms  
  • React form components  
  • Form Submission 

Intended Audience  

This learning path is aimed at all who wish to learn how to use the ReactJS framework.  

Prerequisites

It is essential you understand the face of contemporary web development to attend this course. We insist upon JavaScript experience, along with good HTML and CSS skills. 

Feedback 

We welcome all feedback and suggestions - please contact us at qa.elearningadmin@qa.com to let us know what you think. 

Transcript

- A lot of file management is done by event handling. So it's important that we understand how React works with any DOM-style events a little more, before we delve into working with forms. In an earlier video, we said we could use any event that could be called on a DOM element in a React component with some subtle syntactic differences. Events used in JSX should become a camel cased rather than in lower case. So, "onclick" becomes "onClick", "onmouseover" becomes "onMouseover", and so on. React will usually recognize the event in any case, but warnings will be given in the console. In JSX, you pass a function as the event handler, rather than a string. So "onClick" with a function call to "clickHandler" as a string becomes onClick with the JSX expression. This is an arrow function that returns the call to clickHandler. You cannot make the handler function return false to prevent default behavior. You must explicitly use the preventDefault call in the handling function. And there is no need to ever call addEventListener in React. You just provide the event in its handler callback when the element is initially rendered. We'll be using event handling with forms to trigger value changes in form submission as we go through the rest of this topic.

Lectures

About the Author
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Ed Wright
Senior Learning Consultant
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7041
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Ed is an Outstanding Trainer in Software Development, with a passion for technology and its uses and holding more than 10 years’ experience.

Previous roles have included being a Delivery Manager, Trainer, ICT teacher, and Head of Department. Ed continues to develop existing and new courses, primarily in web design using: PHP, JavaScript, HTML, CSS, SQL, and OOP (Java), Programming Foundations (Python), and DevOps (Git, CI/CD, etc). Ed describes himself as practically minded, a quick learner, and a problem solver who pays great attention to detail. 

Ed’s specialist area is training in Emerging Technologies, within Web Development. Ed mainly delivers courses in JavaScript covering vanilla JS, ES2015+, TypeScript, Angular, and React (the latter is authored by Ed) and has delivered on behalf of Google for PWAs. Ed has also developed a new suite of PHP courses and has extensive experience with HTML/CSS and MySQL. 

Ed is responsible for delivering QA’s Programming Foundations course using the Eclipse IDE. His skillset extends into the DevOps sphere, where he is able to deliver courses based around Agile/Scrum practices, version control, and CI/CD.

Covered Topics