Overview
Startup is asynchronous and automatic via blazor.server.js or blazor.webassembly.js. The Blazor <script> tag is in wwwroot/index.html (WASM) or Pages/_Host.cshtml (Server).
- Documentation: https://learn.microsoft.com/en-us/aspnet/core/blazor/fundamentals/startup?view=aspnetcore-7.0
Manually Starting Blazor
Add autostart="false" to the Blazor <script> tag.
Place a script that calls Blazor.start() after the <script> tag inside the closing <body> tag.
JavaScript Initializers
JS initializers execute logic before and after a Blazor app loads.