fix conditional to check whether input is a number, null, or string

The reset button should be disabled if there is nothing to reset.

An element that displays a message to user:

If their guess is too high, it should display: “That is too high”

If their guess is too low, it should display: “That is too low”

• Every time the user wins a round increase the maximum number by 10.
• Every time the user wins a round decrease the minimum number by 10.
• adjust the input fields to accept the new minimum and maximum numbers

An input field for guessing the number

A button for submitting a guess

The application should display an error message if the guess is not a number (e.g. parseInt() returns NaN).

The clear button should be disabled if there is nothing to clear.

looks like the min is being reduced by a factor of ten on user win. Should only be increasing max on user win/loss.

A button for clearing the input field

The application should display an error if the guess is outside of the range of possible answers.

The type attribute for the guess input should be “number”.

It should have “min” and a “max” attributes equal to the minimum and maximum of the range of guesses (e.g. 1 and 100, respectively).

A button that reset the game to its initial state

An element that displays the users most recent guess

Add additional inputs that allows the user to specify what the minimum and maximum numbers should be.