Laatst bijgewerkt op
20 jan. 2022
|
Ook van toepassing op 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
