Example analysis of slice function usage in JavaScript

This example describes the use of slice functions in JavaScript. Share to everyone for your reference. The specific analysis is as follows:

The slice function in JavaScript, which returns a section of an array for the slice function of the array object. (still an array)

Arrayobj.slice (start, [end])

Parameters:

Arrayobj, required option. An Array object.

Start, required option. The starting element of the part specified in Arrayobj is the zero-based subscript.

End, optional. The end element of the part specified in Arrayobj is the zero-based subscript.

Description

The slice method returns an Array object that contains the specified portion of the arrayobj.

The slice method is copied to the element specified by end, but does not include the element. If start is negative, it is the length + start processing, where length is the size 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, the slice method is copied to the ending of arrayobj. If End appears before start, no elements are copied into the new array.

Example:

In the following example, all elements in the myarray are copied to the NewArray except for the last element:

NewArray = Myarray.slice (0,-1)--------Str Slice

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