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Template: Variable Comparison (Boolean Conditions)

GTM variable template for comparing two values with boolean operators. Supports equals, not equals, contains, not contains, starts with, and not starts with conditions. Perfect for URL filtering and conditional trigger logic.

General Description

This macro template provides boolean comparison functionality between two variables, allowing flexible conditional checks within Google Tag Manager.

Resources

GitHub Repository
Template Gallery

Input

The template accepts three input parameters:

  • Input Variable: Variable to be checked
  • Condition: Type of comparison to perform
  • User Input: Value to compare against

Supported Conditions

  • Equals
  • Not equals
  • Contains
  • Not contains
  • Starts with
  • Does not start with

Execution Flow

  1. Input Acquisition

    const inputA = data.inputVar;
const inputB = data.inputUsr;
const condition = data.condition;

  2. Conditional Evaluation Specific checks are performed based on the selected condition:

    • Direct equality comparison
    • Substring search
    • String start verification

Use Cases

  • URL filtering
  • Input validation
  • Conditional checks in tags and triggers

Usage Example

// Check if a URL contains a specific domain
const data = {
  inputVar: 'https://www.google.com',
  inputUsr: 'google',
  condition: 'contains',
};
// Will return: true

Important Notes

  • Supports string comparisons only
  • Case-sensitive
  • Always returns a boolean value