Останнє оновлення:
20 січ. 2022 р.
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Також застосовується до ColdFusion
Description
Iterates over every element of a List object and can call a UDF function, passed as the second argument.
Returns
None
History
ColdFusion (2018 Release): Made the following changes:
- Parameter str is renamed to list
- Parameter function is renamed to closure
- Parameter delim is renamed to delimiters
Category
Syntax
ListEach(String list, UDFMethod closure [, String delimiters, boolean includeEmptyFields])
Parameters
Parameter |
Description |
---|---|
list |
An input list object. |
closure |
UDF or closure object. |
delimiters | A list delimiter to be used. The default value is comma (,). |
includeEmptyFields | Boolean. Whether to allow empty fields. Default is false. |
Also, the original array can also be passed to the closure function. So the following code is also valid:
... function xclosure(empname, index, empArray) { } ...
Example 1
<cfscript> cityList = "San Jose,New York, Boston, Las Vegas"; function printCity(String city) { WriteOutput("<br>Current city: " & city); } ListEach(cityList ,printCity); </cfscript>
Output
Current city: San Jose
Current city: New York
Current city: Boston
Current city: Las Vegas
Example 2
<cfscript> myList="Tokyo,Bangkok,Jakarta,Manila,Bangalore,Shanghai"; ListEach(myList,function(myListElement,index,myList){ WriteOutput("#index#:#myListElement#" & " "); }); </cfscript>
Output
1:Tokyo 2:Bangkok 3:Jakarta 4:Manila 5:Bangalore 6:Shanghai