Tips for eliminating redundancy in JavaScript when updating an UpdatePanel in ASP.NET

If JavaScript code is not functioning after the UpdatePanel has been refreshed, it needs to be handled properly. There are multiple ways to address this issue. One preferred method involves implementing the following:

<script language="javascript" type="text/javascript>

 **Your JavaScript code here...**

 var prm = Sys.WebForms.PageRequestManager.getInstance();
 if (prm != null) {
  prm.add_endRequest(function (sender, e) {
   if (sender._postBackSettings.panelsToUpdate != null) {

     **Duplicate JavaScript code as above**

   }
  });
 }
</script>

However, it is not ideal to have the same JavaScript code repeated twice. How can this problem be resolved?

Update: Avoiding the need to call functions in the section. Is there a way to locate functions in the section without duplication?

javascriptasp.netrefreshupdatepaneldopostback

Answer №1

To ensure reusability of the code, it is recommended to encapsulate it within a function and then invoke the function from various parts of the script.

// First function call
doSomething();

var prm = Sys.WebForms.PageRequestManager.getInstance();
if (prm != null) {
    prm.add_endRequest(function (sender, e) {
    if (sender._postBackSettings.panelsToUpdate != null) {

        // Second function call
        doSomething();
    }
}

function doSomething() {
    // Code implementation goes here
}

If the function requires information specific to its calling context, then define parameters for the function (

function doSomething(param1, param2)
etc.) and pass the necessary arguments when invoking it (
doSomething("First argument", "Second argument")
, etc.).

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