Douyin Comment Auto-Reply Assistant

Problem

Creators often have to open multiple Douyin videos or image posts, scroll through lazy-loaded comments, check which comments lack a creator reply, and type each response manually. Plain window.scrollBy may not trigger comment loading, and Draft.js editors do not accept document.execCommand. Manual work is repetitive, while formulaic replies can feel robotic.

How It Works

• Entry point: Prefer the personal profile post flow, opening /video/{id} or /article/{id} and entering the comment section.
• Comment loading: Use page.evaluate to find the real scroll container, scroll inside it step by step, and detect the end marker such as no more comments.
• Reply state: Check for the creator or author marker under each user comment to determine whether it has already been answered.
• Sending: Scroll the target into view, then type with page.keyboard.type; avoid identical phrasing, rapid consecutive sends, and overused emoji.

Boundaries and Caveats

• The browser must already be logged in to Douyin, and the target posts must be accessible to the owner.
• This is closer to a personal operations helper than a mass-marketing automation tool; replies should remain natural and spaced.
• DOM changes can affect container selection, reply-button location, or author-marker detection, so selectors may need adjustment.