Spliceslice _ basic knowledge

Spliceslice difference 1. slice method (Array)
Returns an array.

ArrayObj. slice (start, [end])

Parameters
ArrayObj

Required. An Array object.

Start

Required. The starting element of the part specified in arrayObj is the subscript calculated from scratch.

End

Optional. The ending element of the part specified in arrayObj is the subscript calculated from scratch.

Description
The slice method returns an Array object, which contains the specified part of arrayObj.

The slice method is always copied to the end specified element, but this element is not included. If start is negative, it is processed as length + start. here, length is the length of the array. If end is negative, it is processed as length + end. here, length is the length of the array. If end is omitted, the slice method will always be copied to the end of arrayObj. If end appears before start, no elements are copied to the new array.

Example
In the following example, all elements in myArray are copied to newArray except the last element:

NewArray = myArray. slice (0,-1)
2. splice method
Remove one or more elements from an array. if necessary, insert a new element to the position of the removed element to return the removed element.

ArrayObj. splice (start, deleteCount, [item1 [, item2 [,... [, itemN])

Parameters
ArrayObj

Required. An Array object.

Start

Required. Specifies the start position of the element to be removed from the array. This position is calculated from 0.

DeleteCount

Required. The number of elements to be removed.

Item1, item2,..., itemN

Required. The new element to be inserted at the position of the removed element.

Description
The splice method can remove the specified number of elements starting from the start position and insert new elements to modify arrayObj. The returned value is a new Array object consisting of the removed elements.

Requirements
Release 5.5