slice Method (Array)
Returns a section of an array.
The slice method returns an Array object containing the specified portion of the array.
The slice method copies up to, but not including, the element indicated by end. If start is negative, it is treated as length + start where length is the length of the array. If end is negative, it is treated as length + end where length is the length of the array. If end is omitted, extraction continues to the end of the array. If end occurs before start, no elements are copied to the new array.
In the following example, all but the last element of myArray is copied into newArray:
var myArray = new Array(4,3,5,65); var newArray = myArray.slice(0, -1)