React Essentials · Forms & Events · Lesson 14 of 26
Handling Form Submission
Concept
Handling Form Submission
onSubmit on a form, combined with event.preventDefault(), lets you control what happens when a form is submitted.
By the end of this lesson
- Explain the core idea behind Handling Form Submission.
- Predict output before running a change.
- Test one realistic and one unusual input.
- Use the result to make the next decision.
How to study this page
- 1. Read one concept.
- 2. Change the example.
- 3. Run, compare, and explain.
- 4. Complete the challenge below.
Self-check before continuing
Without looking at the example, describe what changes when you modify one input in Handling Form Submission. Then reopen the editor and prove your explanation with a small test.
You are ready to continue when you can predict, test, and explain the result.
Your turn
Build a form with a name field that logs the name on submit.
Need a nudge?
Ask about this lesson or your next move. The guide explains the path without taking the work away from you.
Ready for the next lesson?
Mark this lesson complete when you have finished the exercise.
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