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Always add a semicolon to the ____ of your statements.
Use this syntax to include a single-line comment in your script
/* comments */
Use this syntax to include multi-line comments in your script
Always use the keyword var to ____ a variable
If a variable does not start with an underscore (_), dollar sign ($) or letter it is an ____
You will receive a ____ exception if you attempt to access an undeclared variable
If a variable is declared without a value, it is assigned the value ____.
In boolean contexts the values undefined and null behave as ____
not a number
The value NaN means ____
In numeric contexts, null behaves as the number ___
In numeric contexts, undefined is toxic. It returns ____ no matter what the arithmetic operation being performed is.
To declare an array, use the var keyword and assign it a pair of empty ____