floor — GTM Variable Template for Number

VARIABLES › NUMBER

floor EXTENDED Number

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

Rounds the provided input down to the nearest integer.

---

When to Use This

---

Examples

Round down decimal▶ Try

INPUT

Number To Round Down: 4.7

OUTPUT

4

Integer unchanged▶ Try

INPUT

Number To Round Down: 10

OUTPUT

10

---

Live Sandbox

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

floor

Read-Only Try Live

Number To Round Down

💾 The number to round down to the nearest integer.

Supported formats:
  ✓ Number
  ✓ Stringified Number

Input Setup

Input Function (optional)

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

Result Handling

Output Function (optional)

⚙️ Optional function to apply to the result before returning it (e.g., num => num + ' units', val => val.toString() for string conversion). Useful for chaining transformations on the output.

Number To Round Down number

💡 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.

floor()

+ Chain another variable

---

Related Variables

Same category: Number

→ absolute → addValues → calculateDiffRatio → ceil → clamp → classifyByThreshold → countDigits → divide → max → min → multiply → parseCurrency → parseFloatValue → parseIntValue → percentOf → scaleToRange → squareRoot → subtractValues → toFixed → toFixedNumber → toInteger → 🧩 WEIGHTED (Advanced) → 🧩 WEIGHTED (Predefined)

---

Under the Hood

📜 View Implementation Code

/**
* Rounds the provided input down to the nearest integer.
*
* @param {number} data.src - The number to round down.
* @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 rounding.
*
* @returns {number} The largest integer less than or equal to the input.
*
* @framework ggLowCodeGTMKit
*/
const Math = require('Math');

const floor = function(value) {
   return Math.floor(value);
};
const safeFunction = fn => typeof fn === 'function' ? fn : x => x;
const out = safeFunction(data.out);
// ===============================================================================
// floor - Direct mode
// ===============================================================================
const applyCast = (castFn, value) => safeFunction(castFn)(value);
const value = applyCast(data.pre, data.src);
return out(floor(value));
// ===============================================================================
// floor() – Apply Mode
// ===============================================================================
/*
return function(value) {
  return out(floor(value));
};
*/

🧪 View Test Scenarios (5 tests)

✅ '[example] Round down decimal'
✅ Negative decimal number - should round down
✅ '[example] Integer unchanged'
✅ Zero - should return zero
✅ Small positive decimal - should round down to zero