Write Reusable Reporting Functions (Overview)

Name: Write Reusable Reporting Functions (Overview)
Uploaded: 2026-11-06T14:00:00+00:00
Duration: 1 min 54 s
Description: Someone on a support team reads customer feedback and asks: which of this week’s messages are about delivery? Here’s the report you’ll build to answer that. Three of this week’s six messages are about delivery. It also lists their IDs, so you can…

Write Reusable Reporting Functions Martin Breuss 01:54

In this video, you met the report you’ll build in this course: it answers a question about customer feedback and lists the message IDs behind every count, so you can check each number yourself. Here’s what to keep from it.

Key Points

Someone on a support team reads customer feedback and asks: which of this week’s messages are about delivery? In this course, you’ll build the report that answers that question.
Three of this week’s six messages are about delivery. The report also lists their IDs, so you can open each message and check the count.
On next week’s messages, the same report finds three of five about the app.
Right now, a second report means copying your counting loop and changing the topic. Fix one copy, forget the other, and the two reports stop agreeing.
In this course, you’ll write each rule once, as a small function with clear inputs and results. Then you’ll combine those functions into a report that works for any topic and any set of messages.
In the project, you’ll plan this report, build it on two sets of messages, add a function of your own, and explain your report to the mentor, message by message.
AI can write useful code. Learning programming helps you understand how that code works. It also helps you describe what you want and adapt the result. That’s what lets you explain every number in your report.
You should already be able to count matching records with a loop and a condition. You’ll write your code in RealJS exercises, in your browser.