JavaScript: Form Validation & Async Programming
ECMAscript 2019
| Intermediate
- 10 videos | 1h 1m 50s
- Includes Assessment
- Earns a Badge
Form validation is a common use case for Javascript. Learners will explore basic steps involved in this process, including an overview of asynchronous programming and the use of promises to handle such code, in this 10-video course. Key concepts covered here include how to define simple registration forms with text, numerical input fields, radio buttons, check boxes and drop-down menu; how to access individual form elements and their data contents from Javascript; and learning when variables are destroyed by Javascript when a form submission navigates users to a different web page. Begin by observing a variety of form validations for different input fields; learning operations which run asynchronously in your Javascript application; and learning how to use promises to chain the execution of two functions where one depends on the results returned by the other. Next, learn a function making multiple asynchronous function calls by using async/await syntax. Finally, observe how to use the fetch function to asynchronously retrieve an image file and relate it to the XMLHttpRequest of AJAX.
WHAT YOU WILL LEARN
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Discover the key concepts covered in this course
Define a simple registration form with text, numerical input fields, radio buttons, check boxes and a drop-down menu
Access individual form elements and their data contents from javascript
Recognize when variables are destroyed by javascript when a form submission navigates the user to a different web page
Define a variety of form validations for different input fields -
Identify operations which run asynchronously in your javascript application
Use promises to chain the execution of two functions where one depends on the results returned by the other
Define a function making multiple asynchronous function calls using the async/await syntax
Use the fetch function to asynchronously retrieve an image file and relate it to the xmlhttprequest of ajax
Summarize the key concepts covered in this course
IN THIS COURSE
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2m
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6m 16sDuring this video, you will learn how to define a simple registration form with text, numerical input fields, radio buttons, check boxes, and a drop-down menu. FREE ACCESS
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3. Retrieving Form Data from JavaScript6m 32sLearn how to access individual form elements and their data contents from JavaScript. FREE ACCESS
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4. Logging Form Inputs to the Console4m 14sUpon completion of this video, you will be able to recognize when variables are destroyed by JavaScript when a form submission navigates the user to a different web page. FREE ACCESS
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5. Validating Form Data9m 7sFind out how to define different form validations for different input fields. FREE ACCESS
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6. An Introduction to Asynchronous Programming7m 45sIn this video, find out how to identify operations which run asynchronously in your JavaScript application. FREE ACCESS
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7. An Introduction to Promises8m 2sIn this video, you will learn how to use promises to chain the execution of two functions where one depends on the results returned by the other. FREE ACCESS
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8. The async/await Syntax7m 19sLearn how to define a function that makes multiple asynchronous function calls using the async/await syntax. FREE ACCESS
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9. The fetch API and AJAX9m 34sIn this video, learn how to use the fetch function to retrieve an image file asynchronously and relate it to the XMLHttpRequest of AJAX. FREE ACCESS
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10. Course Summary1m 3sIn this video, we will summarize the key concepts covered in this course. FREE ACCESS
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