Read the console
Definition and example
Read the console is the focus of this lesson. Errors name a file and a line; read the first error, not the last. The task asks you to apply that idea in a small example: What should you read first in an error. Before you run the code, predict what should happen. Then Inspect the result produced by the exercise and compare it with your prediction. If the result differs, change one relevant line and run it again. Testing one change at a time makes the cause of a result easier to understand.
What should you read first in an error?
Pick an answer to check
Pick the right option in the middle column. A wrong answer keeps the next task locked.
Why this works
One question, one correct answer. The explanation appears as soon as you are right, and the next task unlocks with it.
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Incorrect attempts before answer: 0 / 3
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0 passed of 56 tasks
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Worked answer
You have made three incorrect attempts. Review this example, close the window, and continue practising.