isEqualTo — GTM Variable Template for Logic

VARIABLES › LOGIC

isEqualTo EXTENDED Logic

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

Checks if the provided inputs are exactly equal, including case sensitivity. Returns true if identical, false otherwise. Primitive values only.

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When to Use This

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Examples

Equal strings▶ Try

INPUT

Value To Compare: hello
Reference Value: hello

OUTPUT

true

Different values▶ Try

INPUT

Value To Compare: hello
Reference Value: Hello

OUTPUT

false

Strict type check▶ Try

INPUT

Value To Compare: 42
Reference Value: 42

OUTPUT

false

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Live Sandbox

This is what you'll see when you open this variable in Google Tag Manager. Hover the icons for details.

isEqualTo

Read-Only Try Live

Value To Compare

💾 The value to compare.

Supported formats:
  ✓ Primitive value

Reference Value

🎯 Value to compare against. Case-sensitive, exact match required.

Supported formats:
  ✓ Primitive value

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 Compare 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]

Reference Value string

🔗 Result Handling — Chain Variables

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

isEqualTo()

+ Chain another variable

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Related Variables

Same category: Logic

→ isArray → isDefined → isEmpty → isEmptyString → isFalsy → isFunction → isGreaterThan → isGreaterThanOrEqualTo → isInRange → isInfinity → isInteger → isJSON → isLessThan → isLessThanOrEqualTo → isNaN → isNotArray → isNotEmptyString → isNotFunction → isNotJSON → isNotNaN → isNotNull → isNotNumber → isNotObject → isNotString → isNotURL → isNull → isNumber → isObject → isPrimitive → isSHA256 → isString → isStringifiedNumber → isTruthy → isURL → isUndefined → isUnixTimestamp → isUnixTimestampMilliseconds → isUnixTimestampSeconds → isValidNumber → 🧩 AND → 🧩 IF (else) → 🧩 IF AND_OR → 🧩 IF ELSE IF (Advanced) → 🧩 IF ELSE IF (Predefined) → 🧩 NOT → 🧩 OR → 🧩 XOR

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Under the Hood

📜 View Implementation Code

/**
 * Checks if the value is strictly equal to a reference value.
 *
 * @param {any} data.src - The value to check.
 * @param {any} data.ref - The reference value to compare against.
 * @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 checking.
 *
 * @returns {boolean} True if the value is strictly equal to the reference, false otherwise.
 *
 * @framework ggLowCodeGTMKit
 */
const isEqualTo = function(value, reference) {
  return value === reference;
};
const safeFunction = fn => typeof fn === 'function' ? fn : x => x;
const out = safeFunction(data.out);
// ===============================================================================
// isEqualTo - Direct mode
// ===============================================================================
const applyCast = (castFn, value) => safeFunction(castFn)(value);
const value = applyCast(data.pre, data.src);
return out(isEqualTo(value, data.ref));
// ===============================================================================
// isEqualTo(...) – Apply Mode
// ===============================================================================
/*
return function(value, reference) {
   reference = data.rp1 ? reference : data.ref;
   return out(isEqualTo(value, reference));
};
*/

🧪 View Test Scenarios (5 tests)

✅ '[example] Equal strings'
✅ Equal numbers - should return true
✅ '[example] Different values'
✅ '[example] Strict type check'
✅ Both null - should return true