How I bypassed Blazor WebAssembly's Virtual DOM using raw WASM pointers
The article discusses a method to improve performance in Blazor WebAssembly applications by bypassing the Virtual DOM. It introduces a framework called V.A.L.I.D. that utilizes raw WebAssembly memory for state management. This approach aims to reduce CPU spikes and latency during high-frequency updates in applications.
- ▪Blazor WebAssembly can experience performance issues when rendering large data sets due to its Virtual DOM processing.
- ▪The V.A.L.I.D. framework allows direct interaction with WebAssembly memory to manage application state more efficiently.
- ▪This method reduces garbage collection overhead and improves responsiveness during frequent updates.
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| Canonical URL | https://dev.to/unitbuilds_cc/how-i-bypassed-blazor-webassemblys-virtual-dom-using-raw-wasm-pointers-4jn7 |
| Publication time | Sun, 24 May 2026 17:53:21 +0000 |
| Retrieval time | 2026-05-24T18:07:33.784Z |
| Last seen | 2026-05-24T18:07:33.784Z |
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3949275) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } UnitBuilds for UnitBuilds CC Posted on May 24 How I bypassed Blazor WebAssembly's Virtual DOM using raw WASM pointers #blazor #webassembly #performance #csharp Table Of Contents The Bottleneck Step 1: The Memory Slab Step 2: JSExport Bridge Step 3: DOM Mutation The Performance Payoff Compile-time Generation with Roslyn Try it yourself! The Bottleneck: When WebAssembly UI gets sluggish If you've ever built a heavy data grid, a real-time telemetry dashboard, or a line-of-business…
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