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an object-oriented computer programming language commonly used to create interactive effects within web browsers
an operation that finds the remainder after division of one number by another
a symbol that is used to perform an operation
property indicates that a value is not a legal number
style guidelines for programming
operator that adds to a variable's defined value
a block of code designed to perform a particular task
a message you send, and the result is the response
is located within the parentheses of the method
variable containing letters, numbers, and characters
a technique that can be used to simplify code in scenarios that involve calling multiple functions on the same object consecutively
function that computes a new string in which certain characters have been replaced by a hexadecimal escape sequence
function that creates dialouge box with entered string
comments inserted into the source code without affecting the program
a true or false value
the undefined property indicates that a variable has not been assigned a value
variable inputs to a function
statement that ends function execution and specifies a value to be returned to the function caller