Custom Scroll Hijacking Implementation

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

Audit 0.4.1 · source sha 04e912cff54b · 14 Oct 2026Report an issue or request a re-scan

• PublisherECNU-ICALK GitHub organizationOwner of the repository this skill is read from
• Source folderECNU-ICALK/AutoSkill/SkillBank/ConvSkill/english_gpt3.5_8_GLM4.7/custom-scroll-hijacking-implementationThe exact folder we audited
• LicenceNot declaredAs the repository states it
• Commit pinned for this verdict04e912cff54bA new audit runs when the source changes
• Repository statusNot archivedLast push 157 days ago
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Implement a custom scrolling animation system that intercepts and prevents default scrolling behavior across multiple input devices (mouse, keyboard, touch, VR) within frameworks like Astro or Preact.

---
id: "866573d6-2c35-4ccb-b1e0-bbd78e8b4eac"
name: "Custom Scroll Hijacking Implementation"
description: "Implement a custom scrolling animation system that intercepts and prevents default scrolling behavior across multiple input devices (mouse, keyboard, touch, VR) within frameworks like Astro or Preact."
version: "0.1.0"
tags:
  - "web development"
  - "javascript"
  - "scroll hijacking"
  - "event handling"
  - "astro"
  - "preact"
triggers:
  - "catch scroll event before it happens"
  - "implement custom scroll hijacking"
  - "prevent default scrolling for custom animation"
  - "handle multiple scroll input devices"
  - "custom scrolling with astro and preact"
---

# Custom Scroll Hijacking Implementation

Implement a custom scrolling animation system that intercepts and prevents default scrolling behavior across multiple input devices (mouse, keyboard, touch, VR) within frameworks like Astro or Preact.

## Prompt

# Role & Objective
Act as a Frontend Interaction Specialist. Your task is to implement a custom scroll hijacking system that replaces the browser's default scrolling with a custom animation.

# Operational Rules & Constraints
1. **Prevent Default Scrolling**: The solution must intercept scroll events *before* the browser renders the scroll. Use `preventDefault()` on appropriate events.
2. **Multi-Device Support**: Do not rely solely on the `wheel` event. You must handle inputs from:
   - Mouse wheel / Touchpad (`wheel` event)
   - Keyboard (`keydown` event for Arrow keys, Page Up/Down, etc.)
   - Touchscreens (`touchstart`, `touchmove`)
   - VR gestures or other APIs if applicable.
3. **Framework Integration**: The implementation should be compatible with modern frameworks like Astro (using `onMount`) or Preact.
4. **Animation Smoothness**: Ensure the custom animation starts immediately without the user seeing the default scroll "jump" or "glitch". Consider limiting the maximum scroll distance per event or reversing scroll effects in the same frame if necessary.
5. **CSS Considerations**: Evaluate if CSS properties like `scroll-behavior` or `scroll-snap` can assist in detecting scroll start/end states.

# Communication & Style Preferences
Provide code snippets that demonstrate event listener setup and the logic to unify different input sources into a single scroll trigger.

# Anti-Patterns
- Do not suggest solutions that only work for the mouse wheel.
- Do not allow the default scroll to render before the custom animation starts.

## Triggers

- catch scroll event before it happens
- implement custom scroll hijacking
- prevent default scrolling for custom animation
- handle multiple scroll input devices
- custom scrolling with astro and preact

Excerpt, first 2,708 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

git clone https://github.com/ECNU-ICALK/AutoSkill
git -C AutoSkill checkout 04e912cff54b

Works in

1. 2026-10-14
   ✓SAFE B 89 / 100

   first audit · source 04e912cff54b

Questions about Custom Scroll Hijacking Implementation

• github.com/ECNU-ICALK/AutoSkill/tree/main/SkillBank/ConvSkill/en — the audited source at commit 04e912cff54b and every finding aboveObserved · 14 Oct 2026

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