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JavaScript Foundations · Lesson 9 of 10
Debugging simple JavaScript
Practice fixing small JavaScript mistakes by reading code carefully and using the console as a clue tool.
Starter
4 practice exercises
1 homework item
What you will learn
- Explain what debugging means in plain English.
- Recognize a few common early JavaScript mistakes.
- Practice a calm step-by-step debugging mindset.
Lesson shape
14 minute lesson with 11 sections, 4 exercises, 8 checkpoint questions, and 1 homework submission.
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Lesson outline
What this lesson includes
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What debugging means in plain English
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Small JavaScript mistakes are usually the cause
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The console is a clue tool, not a scary judge
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Broken example 1: missing quotes around text
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Broken example 2: a misspelled name
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Broken example 3: targeting the wrong part of the page
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What if the code runs at the wrong moment?
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How to debug calmly
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Common beginner debugging mistakes
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Short recap before lesson 10
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Homework
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Debugging simple JavaScript: quick check
Create a very small example or corrected snippet that demonstrates the main idea from Debugging simple JavaScript.
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Finish this lesson, then move forward without losing your place.
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