Yes... Like most languages, JavaScript requires symbols to be unique within their scope. In JavaScript, if you create multiple definitions for a function within a given scope, then the last one to be defined "wins" - it will be as though the previous definitions never existed.
Yes... Like most languages, JavaScript requires symbols to be unique within their scope. In JavaScript, if you create multiple definitions for a function within a given scope, then the last one to be defined "wins" - it will be as though the previous definitions never existed. What you need to do, in order to make your redundant pageLoad function work, is to use the Sys.Aplication.
Add_load() method. Using it, you can attach as many handlers as you want to the page load event. What's more, you can use anonymous function to add in the add_load method.
Doing this will guarantee you that there is no danger of to handlers with duplicate names. Example: StringBuilder sb = new StringBuilder(); sb. Append("Sys.Application.
Add_load("); sb. Append("function() { alert('page load'); });"); ClientScript. RegisterStartupScript(this.GetType(), "Page_Load", sb.ToString(), true); You can as easily use the Sys.Application.
Add_load on the client side, you can even add the same handler more than once. This will result in firing the same function multiple times :).
I have to disagree with Shog9... I know it's possible to have multiple $(document). Ready(f(n)) calls in a single document, with each being called in turn when the DOM finishes loading. I don't believe that multiple calls to ClientScript.
RegisterStartupScript() cause any issues either.
4 Josh, you're talking about jQuery, which supports binding multiple handlers to a single event. He's talking about the built-in ASP. NET AJAX auto-binding of the global pageLoad function.
While ASP. NET AJAX also supports binding multiple handlers to a single event, that does not change the fact that the underlying language does not support multiple functions with the same name! – Shog9?
Jun 12 '09 at 18:37 ahh good point! I missed that in the original post. Thanks for correcting me on that – Josh E Jun 12 '09 at 18:56.
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