wrapInArray — GTM Variable Template for Array

VARIABLES › ARRAY

wrapInArray EXTENDED Array

Direct (.tpl) Apply (.tpl) Add to GTM

Wraps the provided input into a new array.

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When to Use This

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Examples

Wrap string▶ Try

INPUT

Value To Wrap: hello

OUTPUT

["hello"]

Wrap number▶ Try

INPUT

Value To Wrap: 42

OUTPUT

[42]

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Live Sandbox

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wrapInArray

Read-Only Try Live

Value To Wrap

💾 The value to be wrapped into an array.

Input Setup

Input Function (optional)

⚙️ Optional pre-processing function applied to the input before internal logic (e.g., convert object to string, normalize case). Internal transformations such as case handling will still apply afterward.

Result Handling

Output Function (optional)

⚙️ Optional function to apply to the result before returning it (e.g., str => str + ' €', val => val !== undefined for boolean conversion). Useful for chaining transformations on the output.

Value To Wrap string

💡 Type any text to see the result update live

🎯 Using special value — click input to type instead

Test with:

Falsy undefined null "" empty 0 false NaN

Truthy true 42 "hello" {} empty [] empty {a:1} [1,2,3]

🔗 Result Handling — Chain Variables

Chain apply-mode variables to the output. Each variable receives the result of the previous one.

wrapInArray()

+ Chain another variable

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Related Variables

Same category: Array

→ chunk → compact → dropItems → dropItemsRight → every → filterArray → find → findIndexByCallback → findIndexByRegex → flatten → head → includesAll → includesAny → includesNone → join → last → lastIndexOf → map → reduce → reduceRight → reverse → selectFromArray → some → sort → tail → takeItems → takeItemsRight → uniq → ⚡ ARRAY › From Indexed Values → ⚡ ARRAY › From Values

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Under the Hood

📜 View Implementation Code

/**
* Wraps the provided input into a new array and returns the array.
*
* @param {any} data.src - The value to be wrapped into the array.
* @param {Function|string} [data.out] - Optional output handler: function to transform result or string with format.
*
* Direct-mode specific parameters:
* @param {Function} [data.pre] - Optional pre-processor function to transform src before wrapping.
*
* @returns {Array} The new array containing the input value as the only element.
*
* @framework ggLowCodeGTMKit
*/
const wrapInArray = function(input) {
   const result = [];
   result.push(input);
   return result;
};

const safeFunction = fn => typeof fn === 'function' ? fn : x => x;
const out = safeFunction(data.out);

// ===============================================================================
// wrapInArray - Direct mode
// ===============================================================================
const applyCast = (castFn, value) => safeFunction(castFn)(value);
const value = applyCast(data.pre, data.src);
return out(wrapInArray(value));

// ===============================================================================
// wrapInArray() – Apply Mode
// ===============================================================================
/*
return function(value) {
  return out(wrapInArray(value));
};
*/

🧪 View Test Scenarios (4 tests)

✅ '[example] Wrap string'
✅ '[example] Wrap number'
✅ Object value - wraps in array
✅ Null value - wraps null in array