Test

Data Types: Part II

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Preguntas del test (5)

1Which of the following are valid operators in JavaScript?
1. A+
2. B/
3. C%
4. D**
2If we create a new variable, but we don't assign that variable to anything right away, what data type does the new variable default to?
1. Anull
2. Bundefined
3. CNaN
3If we have a variable called middleName and we're saving information for a user who has no middleName, what data type might that variable contain?
1. Anull
2. Bundefined
3. CNaN
4If we try to assign a variable to the result of a mathematical operation that is not valid (e.g. var result = Math.log(-1); ), what type would that variable be?
1. Anull
2. Bundefined
3. CNaN
5Which of the following are boolean expressions?
1. A5 > 1
2. Btrue === true
3. C6 % 2
4. D"Hello world".length > 10

Descripción: Test sobre Data Types: Part II, creado por Code Ramp el 11/11/2018.
Autor: Code Ramp
Idioma: English
Visitas: 122
Etiquetas: toefl
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