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Frontend AI

Prepare for AI-focused frontend interviews with build exercises, interface architecture, agent patterns, and the underlying concepts that make them reliable.

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AI preparation index

20 questions + guides

AI Machine Coding8 builds

AI Streaming Chat WindowMedium

Slash-Command Prompt InputMedium

AI Citations PanelPROMedium AI Inline Diff ViewerPROHard AI Agent Trace RendererPROHard AI Model Picker + Cost/Latency BadgeMedium

AI Tool-Call Cards in ChatPROHard AI Speculative / Optimistic Token UIPROHard

AI System Design7 briefs

Design Perplexity (RAG Search with Citations)PROHard Design a Self-healing React ComponentPROHard Design Cursor (AI Code Editor with Agent Edits)PROHard Design AI Agent Traces & Artifacts UIPROHard Design an AI Customer Support AgentPRONEWHard Design ChatGPT (Streaming Chat with Branching & Share-link)PROHard Stream Over HTTP FirstMedium

Underlying Knowledge5 concepts

Streaming protocols compared: SSE vs WebSockets vs HTTP/2 Push vs chunked transferEasyConcept AbortController and how it composes with fetch + ReadableStreamMediumConcept TextDecoder({ stream: true }): why UTF-8 boundaries break naïve streamingMediumConcept From token generation to character render: the full streaming pipelineMediumConcept RAG: where does the frontend's responsibility start and end?MediumConcept

Guides11 walkthroughs

Streaming LLM Responses in ReactFoundational12 min read AI Chat UI Patterns for Frontend EngineersCore10 min read LLM API Essentials for Frontend EngineersCore11 min read AI Agents and Tool Use for Frontend EngineersCore9 min read RAG for Frontend Engineers: Retrieval and CitationsCore10 min read Production AI Frontend PatternsAdvanced9 min read LLM Frontend Architecture: BFF, Edge, or On-DeviceCore10 min read Streaming Markdown Without a Broken UIAdvanced9 min read Structured Outputs and Generative UICore10 min read Prompt Injection and Security for AI FrontendsAdvanced9 min read Human-in-the-Loop AI Approval FlowsCore8 min read

Reference32 terms

AI Frontend GlossaryReferenceStreaming, agents, retrieval, SDKs

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AI preparation index

Master LLM streaming and AI agent UI interviews

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Frontend System Design Interview Questions & Rubric

React & UI Machine Coding Sandbox Challenges

Web Fundamentals — Rendering & Performance

JavaScript Coding — Polyfills & Custom Hooks