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Automation Lesson 5

Scripting for Workflows

Use JavaScript or Python snippets to clean, transform, validate, and route workflow data.

Practical40 min

Lesson Guide

Why scripts are useful

Visual workflow blocks handle many tasks, but scripts are useful when you need custom formatting, filtering, calculations, or data cleanup.

  • Keep scripts short.
  • Use clear variable names.
  • Return structured data for the next step.

Transforming data

A common script takes incoming JSON, selects the fields that matter, normalizes names or dates, and creates a clean object for later actions.

  • Check for missing fields.
  • Normalize text before comparing it.
  • Avoid changing the original data unexpectedly.

Handling errors

Scripts should fail clearly. If a required value is missing, the workflow should know whether to stop, retry, or ask for human review.

  • Validate before transforming.
  • Use helpful error messages.
  • Do not log secrets or private content unnecessarily.

Practice Task

Design a small script step that receives a form payload, trims text fields, validates email, and returns a clean lead object.

Ready Checklist

  • The script has one clear job.
  • Missing data is handled safely.
  • The output shape is predictable.
Scripting for Workflows | Automation Learning | ThutaTech