Wednesday, 28 December 2011

JavaScript Array & Boolean Object Reference


Array Object

The Array object is used to store multiple values in a single variable.

Array Object Properties

PropertyDescription
constructorReturns the function that created the Array object's prototype
lengthSets or returns the number of elements in an array
prototypeAllows you to add properties and methods to an object

Array Object Methods

MethodDescription
concat()Joins two or more arrays, and returns a copy of the joined arrays
indexOf()
join()Joins all elements of an array into a string
pop()Removes the last element of an array, and returns that element
push()Adds new elements to the end of an array, and returns the new length
reverse()Reverses the order of the elements in an array
shift()Removes the first element of an array, and returns that element
slice()Selects a part of an array, and returns the new array
sort()Sorts the elements of an array
splice()Adds/Removes elements from an array
toString()Converts an array to a string, and returns the result
unshift()Adds new elements to the beginning of an array, and returns the new length
valueOf()Returns the primitive value of an array



Boolean Object

The Boolean object is used to convert a non-Boolean value to a Boolean value (true or false).

Boolean Object Properties

PropertyDescription
constructorReturns the function that created the Boolean object's prototype
prototypeAllows you to add properties and methods to an object

Boolean Object Methods

MethodDescription
toString()Converts a Boolean value to a string, and returns the result
valueOf()Returns the primitive value of a Boolean object

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