Instant Prompt-to-JS & Preview

\n Enter or edit your prompt below to see the script preview update. Edit the value for userInput as rendered in\n the code.\n

\n setPrompt(e.target.value)}\n placeholder=\"Enter your prompt here... (e.g., 'reverse the string')\"\n />\n setUserInput(e.target.value)}\n placeholder=\"Enter user input here...\"\n />\n

Console Output:

\n {isLoading ?

Generating code...

: (\n output.map((log, index) => (\n

\n {log}\n

\n ))\n )}\n

\n {generatedCode && (\n

\n \n {isCodeVisible && (\n

\n              {generatedCode}\n

\n )}\n

\n );\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")).render();\n}\n\nif (typeof document !== \"undefined\") {\n client();\n}\n\nfunction stripCodeFences(code: string): string {\n return code.replace(/^```javascript\\n|^```\\n|```$/gm, \"\").trim();\n}\n\nfunction extractMessage(logOutput: string): string {\n try {\n const parsed = JSON.parse(logOutput);\n return parsed.message || logOutput;\n } catch (e) {\n return logOutput;\n }\n}\n\nconst sleep = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));\n\nasync function retryWithBackoff(fn: () => Promise, maxRetries = 5) {\n let retries = 0;\n while (retries < maxRetries) {\n try {\n return await fn();\n } catch (error) {\n if (error.status === 429) {\n const delay = Math.pow(2, retries) * 1000 + Math.random() * 1000;\n console.log(`Rate limited. Retrying in ${delay}ms...`);\n await sleep(delay);\n retries++;\n } else {\n throw error;\n }\n }\n }\n throw new Error(\"Max retries reached\");\n}\n\nexport default async function server(request: Request): Promise {\n if (request.method === \"POST\" && new URL(request.url).pathname === \"/generate\") {\n const { OpenAI } = await import(\"https://esm.town/v/std/openai\");\n const openai = new OpenAI();\n\n const { prompt } = await request.json();\n\n try {\n const completion = await retryWithBackoff(() =>\n openai.chat.completions.create({\n messages: [\n {\n role: \"system\",\n content:\n \"You are a JavaScript code generator. Generate valid JavaScript code based on the given prompt, without any explanations or markdown code fences. Include console.log statements at the end of the code to output the results of important operations or final values. Do not wrap the code in ```javascript or ``` tags. The variable 'userInput' is available in the code environment and contains the user's input. Use this variable directly in your generated code when the prompt refers to user input.\",\n },\n { role: \"user\", content: prompt },\n ],\n model: \"gpt-4o-mini\",\n max_tokens: 500,\n })\n );\n\n let generatedCode = stripCodeFences(completion.choices[0].message.content);\n\n return new Response(JSON.stringify({ generatedCode }), {\n headers: { \"Content-Type\": \"application/json\" },\n });\n } catch (error) {\n console.error(\"Error generating code:\", error);\n return new Response(JSON.stringify({ error: \"Failed to generate code. Please try again later.\" }), {\n status: 500,\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n }\n\n return new Response(\n `\n \n \n JavaScript Codebed with User Input\n \n \n \n

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