ArrayShift

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Cập nhật gần đây nhất vào 26 thg 12, 2022

Description

Removes the first element of an array and returns the element that is removed. This method removes the element at the first index and shifts the values at consecutive indexes down. If you use ArrayShift in an empty array, you get an exception.

Returns

The shifted element.

Syntax

ArrayShift(array)

Member function

array.shift()

History

ColdFusion (2021 release): Added this function.

Parameters

Parameter	Required/Optional	Description
array	Required	The array to update.

Lưu ý:

If the array is empty, there is an exception.

Example

Example 1

<cfscript>
    arr=["Jan","Feb","Mar","Apr","May"]
    shiftedElement=ArrayShift(arr)
    WriteOutput(shiftedElement) // Returns Jan
</cfscript>

Example 2

<cfscript>
    arr=[{"id":101,"name":"John"},
         {"id":102,"name":"Paul"},
         {"id":103,"name":"George"}
        ]
    shifted=ArrayShift(arr)
    WriteDump(shifted)
</cfscript>

Output