JavaScript Dates and Exceptions

Feature of JavaScript that allows the same variable to hold different data types.

• Dynamic Type

• typeof

• const

• Nan

Statement that returns the data type of a variable or expression.

• Dynamic Type

• typeof

• const

• Nan

Use to create variables that cannot be changed.

• var const

• var fixed

• var no.changy

• none of the selections are correct.

Converts a string to an integer

• parseInt()

• parseFloat()

• Number()

• string()

Converts a string to a Floating point number.

• parseInt()

• parseFloat()

• Number()

• string()

Converts a string or expression to its' numerical equivalent.

• parseInt()

• parseFloat()

• Number()

• string()

Data type for a variable or expression that is not a number.

• parseInt()

• parseFloat()

• Number()

• string()

Yore code asked the user to input a number. Some idiot enters "seven".

Which error code is going to appear?

• NaN

• null

• no error code appears

• StringError

You want users to enter a number between 1 and 10. If they don't you'll give them an alert message. Which selection should be placed in location J ?

• try

• throw

• catch

• finally

You want users to enter a number between 1 and 10. If they don't you'll give them an alert message. Which selection should be placed in location K ?

• try

• throw

• catch

• err