the Tostring() method returns an array as a comma seperated string
the Join() method jins array elements into a string
popping(remove) items out of an array, pushing(adding) items into an array
javascript array pop()
the pop() method removes the last element from an array
The push() method appends a new element to an array
the shift() method removes the first element of an array and shifts the other elements to the left
the unshift() method adds new element to the beginning of an array.
the length porperty provides an easy way to append new element to an array without using the push method.
the concat() method merge arrays
the concat() method also merge string values to an array
the splice() method adds a new element to an array
the splice() method also returns an array with the deleted element
the slice() method slices out a part of an array starting from array element.