arrayEach

Used to iterate over an array and run the function closure for each item in the array.

arrayEach(array, function(item, [index, [array]]){} [, parallel] [, maxThreads]) → returns void

Member Function Syntax

someArray.each(function(item, [index, [array]]){} [, parallel] [, maxThreads])

CF10+

Lucee

BL 1.0.0+

Argument Reference

array array
Required

callback function
Required

Closure or a function reference that will be called for each of the iteration.

Callback parameters:

value* any : The value for the current iteration
index* numeric : The current index for the iteration
array* array : A reference of the original array

parallel boolean
Default: `false`

Lucee 4.5+ CF 2021+ Specifies whether the items can be executed in parallel

maxThreads numeric
Default: `20`

Lucee 4.5+ CF 2021+ The maximum number of threads to use when parallel = true

Links more information about arrayEach

Map, Reduce and other Higher Order Functions - A Primer for map, reduce, filter, and Higher Order Functions in general.
ColdFusion 11: .map() and .reduce() - A look at the new .map() and .reduce() methods that each of array, struct and lists all have

Examples
Sample code invoking the arrayEach function

Simple Example

letters = ["a","b","c","d"]; 
arrayEach(letters, function(element,index) {
    writeOutput("#index#:#element#;");
});

Expected Result: 1:a;2:b;3:c;4:d;

Member Function Example

a = ["a","b","c"];
a.each(function(element,index,array){
    writeOutput("#index#:#element#;"); 
});

Expected Result: 1:a;2:b;3:c;

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https://cfdocs.org/arrayeach