1. What data type is the variable x?

var x = {}; → This is an Object

Object ✔️
Function ❌
Parameter ❌

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2. Output of the code

There is a missing ' → code won’t run → SyntaxError

Correct: Uncaught SyntaxError ✔️
Caught ❌

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3. What value prints?

burger[2] → index 2 → "lettuce"

lettuce ✔️

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4. How many methods does bicycle have?

Methods:

• start

• stop
  Total: 2 ✔️

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5. Output of code

throw new Error() immediately jumps to catch → prints Goodbye

Goodbye ✔️
Hello ❌

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6. Missing bracket leads to which error?

SyntaxError ✔️

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7. Will the following produce a string output?

add(3, "4") → “34” (string concatenation) logs a string → Yes ✔️

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8. What prints?

var result; → uninitialized variable → undefined ✔️

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9. str.match(“jello”)

No match → null ✔️

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10. Output of code

toPrecision(300) → number precision too large → RangeError caught → prints “There was an error”

Correct: “There was an error” ✔️

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📘 Summary Table