🧩 IF AND/OR — GTM Variable Template for Logic

VARIABLES › LOGIC

🧩 IF AND/OR CORE Logic

Direct (.tpl) Add to GTM

Applies AND if condition is true, OR if false.

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When to Use This

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Examples

AND all truthy▶ Try

INPUT

Condition to decide which logic to apply: true
Values To Test: [{val: 'hello'}, {val: 'world'},{val: 'test'}]

OUTPUT

test

OR first truthy▶ Try

INPUT

Condition to decide which logic to apply: false
Values To Test: [{val: false}, {val: 'first truthy'}, {val: 'second truthy'}]

OUTPUT

first truthy

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Live Sandbox

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🧩 IF AND/OR

Read-Only Try Live

IF ⬇

Condition to decide which logic to apply

🔀 Applies AND if the condition is true, otherwise applies OR.

↳ AND: Returns the first falsy value found, or the last value if all are truthy

↳ OR: Returns the first truthy value found or the last value if all are falsy.

AND/OR ⬇

Values To Test

⊖

Add Row

Result Handling

Output Function (optional)

Optional function to apply to the result before returning it (e.g., `str => str + ' €'`). Useful for chaining transformations on the output.

Condition to decide which logic to apply 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]

Values To Test list

✕

✕

✕

+ Add Row

🔗 Result Handling — Chain Variables

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

ifAndOr()

+ Chain another variable

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Related Variables

Same category: Logic

→ isArray → isDefined → isEmpty → isEmptyString → isEqualTo → 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

/**
 * Evaluates conditions using dynamic logic selection based on a flag.
 * Switches between AND logic (true) and OR logic (false).
 *
 * @param {boolean} useAnd - Flag to determine logic type (true = AND, false = OR)
 * @param {Array<Object>} ls1 - Array of value objects to evaluate
 * @param {*} ls1[].val - Value to evaluate in the logic operation
 *
 * @returns {*} Result based on AND or OR logic.
 *
 * @framework ggLowCodeGTMKit
 */
const ifAndOr = function(useAnd, ls1) {
    if (useAnd) {
        // AND Logic: all must be truthy
        let lastValue;
        for (let i = 0; i < ls1.length; i++) {
            const item = ls1[i];
            if (!item) {
                return false;
            }
            const value = item.val;
            if (!value) {
                return value;
            }
            lastValue = value;
        }
        return lastValue;
    } else {
        // OR Logic: first truthy wins
        for (let i = 0; i < ls1.length; i++) {
            const item = ls1[i];
            if (!item) {
                continue;
            }
            const value = item.val;
            if (value) {
                return value;
            }
        }
        return false;
    }
};
const safeFunction = fn => typeof fn === 'function' ? fn : x => x;
const out = safeFunction(data.out);
// ===============================================================================
// ifAndOr - Direct mode
// ===============================================================================
return out(ifAndOr(!!data.con, data.ls1 || []));

🧪 View Test Scenarios (5 tests)

✅ '[example] AND all truthy'
✅ AND logic - one falsy value, returns first falsy
✅ '[example] OR first truthy'
✅ OR logic - all values are falsy, returns false
✅ AND logic with output function