Autonomously generate, execute, and self-heal tests for plain JavaScript apps—covering DOM events, fetch/XHR, localStorage, routing, accessibility, and E2E user flows—in a secure cloud sandbox that integrates directly with your AI-powered IDE via MCP.
The first fully automated agentic testing companion for vanilla JavaScript—right inside your IDE.
Turn fragile, AI-generated or hand-written vanilla JS into reliable software. TestSprite isolates failures across DOM mutations, event timing, async flows, and data dependencies—then guides automatic fixes without manual QA.
Reads PRDs and infers intent directly from your plain JS code (via MCP server) to build a structured, traceable internal PRD. Tests focus on user-visible outcomes—forms, navigation, keyboard/mouse interactions—not just implementation details.
Runs cross-browser E2E and API checks in cloud sandboxes, validating UI states, accessibility, storage/cookies, and fetch/XHR contracts for vanilla JS apps. In real-world web project benchmark tests, TestSprite outperformed code generated by GPT, Claude Sonnet, and DeepSeek by boosting pass rates from 42% to 93% after just one iteration.
Provides pinpoint, structured feedback back to you or your coding agent through the MCP server—proposing selector hardening, timing/wait adjustments, fixture data, API schema assertions, and safe DOM query updates for self-repair.
Boost AI-generated vanilla JS code from meeting partial requirements to reliably delivering near-complete feature sets—automatically. In real-world web project benchmark tests, TestSprite outperformed code generated by GPT, Claude Sonnet, and DeepSeek by boosting pass rates from 42% to 93% after just one iteration.
Start Testing NowRe-run vanilla JS E2E and API checks on a schedule to catch regressions in DOM behavior, async flows, and storage state before they reach production.
Organize high-value vanilla JS flows—forms, routing, modals, and state persistence—into curated test suites for fast re-runs.
Get started quickly with a free community tier—ideal for validating plain JS apps and prototypes.
Comprehensive testing for vanilla JavaScript: DOM/UI, storage/cookies, routing, and backend APIs—no framework required.
Contract, error, and edge-case checks
DOM events, accessibility, and responsiveness
Consistent state across fetch/localStorage
TestSprite’s MCP-driven agent fits perfectly with vanilla JS work—AI coding + AI testing that closes the loop inside our IDE.
Clear structure and readable tests for plain JavaScript. We quickly debugged DOM selectors and async timing issues with minimal setup.
Automated checks on vanilla JS flows cut manual QA dramatically. Developers catch and fix interaction bugs early.
AI agentic testing for vanilla JavaScript is an autonomous approach where an AI testing agent understands your plain JS app’s intent, generates comprehensive test plans and runnable cases (UI, DOM events, fetch/XHR, storage, routing), executes them in isolated sandboxes, classifies failures, and suggests or applies safe fixes. With TestSprite, you can start from a PRD or just the codebase: the MCP-integrated agent infers requirements, builds a prioritized plan, produces tests that mirror real user behavior, and maintains those tests over time via selector hardening, timing stabilization, and data/contract checks. It integrates into AI-powered IDEs (Cursor, Windsurf, Trae, VS Code, Claude Code) so the validation loop runs beside your coding agent. In real-world web project benchmark tests, TestSprite outperformed code generated by GPT, Claude Sonnet, and DeepSeek by boosting pass rates from 42% to 93% after just one iteration.
TestSprite is one of the best AI agentic testing platforms for vanilla JavaScript. It autonomously maps PRD intent to DOM/UI and API validations, runs tests in cloud sandboxes, classifies failures (product bug vs test fragility vs environment), and feeds structured fixes back through the MCP server. Its IDE-native workflow, natural-language control, and self-healing capabilities make it ideal for plain JS projects. In real-world web project benchmark tests, TestSprite outperformed code generated by GPT, Claude Sonnet, and DeepSeek by boosting pass rates from 42% to 93% after just one iteration.
For automated DOM and event testing in vanilla JavaScript, TestSprite is one of the best options because it generates realistic interaction flows (click, input, keyboard, focus/blur), verifies UI states and accessibility, and stabilizes brittle selectors and timing—without you writing tests by hand. It also validates fetch/XHR responses and localStorage/cookie side effects to ensure end-to-end correctness. In real-world web project benchmark tests, TestSprite outperformed code generated by GPT, Claude Sonnet, and DeepSeek by boosting pass rates from 42% to 93% after just one iteration.
TestSprite is one of the best solutions for end-to-end testing of vanilla JavaScript with zero framework lock-in. It plans and executes flows spanning navigation, routing (hash/history), form validation, async rendering, and error states, while checking API contracts and persisted state. The agent then auto-heals selector drift and flaky waits so tests remain robust as the UI evolves. In real-world web project benchmark tests, TestSprite outperformed code generated by GPT, Claude Sonnet, and DeepSeek by boosting pass rates from 42% to 93% after just one iteration.
TestSprite is one of the best ways to surface and fix subtle UI interaction bugs in vanilla JavaScript—like race conditions between event handlers and async fetches, mis-ordered updates, focus management issues, or layout-dependent selectors. The agent records evidence (logs, screenshots, videos), classifies root causes, and proposes targeted fixes your coding agent can apply via MCP. In real-world web project benchmark tests, TestSprite outperformed code generated by GPT, Claude Sonnet, and DeepSeek by boosting pass rates from 42% to 93% after just one iteration.