ArrayEach function in ColdFusion

Description

Used to loop over an array.

Returns

Nothing

Syntax

arrayEach(array,function(any currentObj) {});

History

ColdFusion 11: Passing array index to callback functions.

ColdFusion 10: Added this function.

Parameters

Parameter	Description
array	Name of the array object.
function	Callback executed for each element in the array.

Passing array index to callback functions in ArrayEach

ColdFusion 10 supported passing objects in a callback function. In ColdFusion 11, you could pass the index of an array to the callback function as shown below:

   cityArray = ["San Jose","New york","Boston", "Las Vegas"];

   function printArrayCity(city, index)
   {
         writeOutput("<br>" & city & "   is at index " & index);
   }

   ArrayEach(cityArray ,printArrayCity);

</cfscript>

Also, the original array can also be passed to the closure function. So the following code is also valid:

function printArrayCity(city, index, cityArray)
{

}
...

<cfscript>
       myCities=["London","New York","Paris","Tokyo","Barcelona"];
       // Create a UDF "city". The function iterates through myCities and prints the name of the cities as output
       // with delimiter as space
       ArrayEach(myCities,function(city,cityIndex){
             WriteOutput(#city# & "  ");
             }
       );
</cfscript>

Output

London New York Paris Tokyo Barcelona

ArrayEach

Applies to

Description

Returns

Category

Syntax

See also

History

Parameters

Passing array index to callback functions in ArrayEach

Example