Sys.Application.add_load() vs. $(document).ready() vs. pageLoad()

Question

I have page that has some javascript that needs to run at page load. Said javascript needs to locate the client-side component of a ServerControl, which it does with $find(

Answer 1

If you have control over the code-behind, you can register the JavaScript to run at startup via something like:

this.Page.ClientScript.RegisterStartupScript(
    this.GetType(), 
    "StartupScript", 
    "Sys.Application.add_load(function() { functioncall(); });", 
    true);

As long as your component has been loaded via Sys.Application.add_init() you should be fine...