Form Submission

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ReactJS
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React Event Forms
PREVIEW1m 24s
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ReactJS: Zero to Hero
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Overview
DifficultyBeginner
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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

- Clicking the submit button on a form raises a non submit event. By default, this will make a HTTP GET request, pending the form data to the URL and sending it back to the server. Obviously, this isn't a desired behavior for our react application, as it will refresh the HTML page, rebuild the DOM and wipe out any JavaScript data we are storing. So how do we get around that? How about we intercept the unsubmit event and have our own submit handler? We give the form and unsubmit event handler and pass the event to a function called handleSubmit. Then, we can define the handleSubmit function. The handleSubmit function takes the event and calls prevent default to stop the HTTP requests from being made. Then, it takes the username state, converts it to JSON and logs it out to the console. Clicking on the submit button in the browser demonstrates this behavior. Of course, we've shown a simple handler function to show you the mechanism. In reality, this will probably do something like validating the phone data and then sending it off in a HTTP request. We'll cover how to do that in working with external data.

Lectures

About the Author
Students4309
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Courses29
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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