JavaScript Variables

Chapter 3 · Check variable declaration and naming rules.

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Exercise 3A

Check variable declaration and naming rules.

QUESTION 1 OF 10

camelCase snake-case ALL spaces dot.case

QUESTION 2 OF 10

A letter, underscore or $ A number only A hyphen A space

QUESTION 3 OF 10

const fixed constant static

QUESTION 4 OF 10

= == === =>

QUESTION 5 OF 10

JavaScript identifiers HTML tag names only CSS comments Browser URLs only

QUESTION 6 OF 10

let goto dim auto

QUESTION 7 OF 10

let varname define new

QUESTION 8 OF 10

let totalScore = 0; let total-score = 0; let 2score = 0; variable totalScore;

QUESTION 9 OF 10

The binding cannot be reassigned The value is always a string It creates global variables only It cannot store objects

QUESTION 10 OF 10

It is block scoped It is automatically global It becomes constant It becomes HTML