escape(character)— Returns a string containing the ASCII encoding of character in the form %xx; xx is the numeric encoding of the character. (2|3|I)
eval(expression)— Returns the result of evaluating expression, which is an arithmetic expression. (2|3|I)
isNaN(value)— Evaluates value to see if it's NaN. Returns a Boolean value. (2|3|I) (On UNIX platforms, not 2.)
parseFloat(string)— Converts string to a floating-point number and returns the value. It continues to convert until it hits a non-numeric ...