TypeScript Lab: Search Records

LAB / EXPLORATION

Planned

LAB 056 — SQLite & Data Access
Search multiple record fields and display matching results.

LAB TypeScript Lab: Search Records Preview coming soon

LAB 056

TypeScript Lab: Search Records

Concept

A parameterized search query can inspect several fields and relationships.

Concept

A parameterized search query can inspect several fields and relationships.

Objective & Explanation

What the project should make visible and why the concept matters.

Learning Target

Objective

Search multiple record fields and display matching results.

Explanation

A parameterized search query can inspect several fields and relationships.

Project Plan

Structure, technologies, data boundary, and source connection.

Structure

project/
├── package.json
├── tsconfig.json
├── index.html
├── styles.css
├── data/
│   └── learning.db
└── src/
    ├── client.ts
    └── server.ts

Technologies

TypeScript
Node.js
SQLite
HTML
CSS

Data Layer

Use SQLite learning rows. Isolate destructive practice from important Sandbox records.

Sandbox Source

src/local-editor/server.ts → searchRecords()

Build Instructions

Build only the focused behavior, then use the visual layer to inspect it.

Setup

Create the standalone project folder and listed files.

Implement

Implement the smallest version that demonstrates the concept.

Run & Inspect

Render the returned or changed data in the browser.

Code & Configuration

Starter configuration plus the focused implementation example.

Focused TypeScript

Implement this behavior first, then alter the input.

const q = `%${term.trim()}%`;

const rows = database.prepare(`
  SELECT id, title, description
  FROM records
  WHERE title LIKE ? OR description LIKE ?
  ORDER BY title
`).all(q, q);

Starter Configuration

Keep the project independently buildable.

package.json

{
  "type": "module",
  "scripts": {
    "build": "tsc",
    "start": "npm run build && node --enable-source-maps dist/server.js"
  },
  "devDependencies": {
    "@types/node": "^26.4.0",
    "typescript": "^7.0.2"
  }
}

tsconfig.json

{
  "compilerOptions": {
    "rootDir": "./src",
    "outDir": "./dist",
    "target": "ES2022",
    "module": "ES2022",
    "lib": ["ES2022", "DOM"],
    "types": ["node"],
    "strict": true,
    "sourceMap": true
  },
  "include": ["src/**/*.ts"]
}

Expected Visual Result

The output is the proof that the concept is working.

Visible Proof

The browser should visibly demonstrate: search multiple record fields and display matching results.

Data: SQLite