Using AJAX to dynamically inject a JavaScript function into the webpage

Question

Using AJAX to dynamically inject a JavaScript function into the webpage

When I load a portion of a page using AJAX calls, sometimes the loaded content may contain script functions attached to controls with different events. The issue arises when these events are triggered, resulting in an error message saying "object not found," implying that the function is not defined. However, when checking with Firebug, it shows that the function is indeed defined and available. How can I ensure that the browser can find the respective function?

I have tried various approaches but still facing issues. Here is what I am currently doing:

       Page
           --->Partial View A
                  ----->Partial View B

The main page loads Partial View A with Ajax Calls, which further loads Partial View B also using Ajax Calls. Both Partial Views A & B contain few JavaScript functions logically associated only with them and not with the master page. The pages load correctly, but the functions fail to execute, causing an "Object Not Found" error.

javascript ajax

Answer 1

Answer №1

It's recommended to define functions using the following syntax:

myFunction = function(foo) {}

Avoid using this alternative syntax:

function myFunction(foo) {}

The second format might not execute properly when passed through eval() (which could be the issue)

Answer 2

It's recommended to define functions using the following syntax:

myFunction = function(foo) {}

Avoid using this alternative syntax:

function myFunction(foo) {}

The second format might not execute properly when passed through eval() (which could be the issue)

Answer 3

Answer №2

When working with a framework or library, it's important to remember to set a parameter for evaluating scripts in the response from an ajax request. This parameter is often referred to as evalScripts.

evalScripts:true

You can also utilize the success and error callbacks of the request to handle events more efficiently and help centralize your code, avoiding potential issues.

If you are using plain JavaScript and XmlHttpObject, you will need to manually locate all script tags in the response and execute them using eval().

Answer 4

When working with a framework or library, it's important to remember to set a parameter for evaluating scripts in the response from an ajax request. This parameter is often referred to as evalScripts.

evalScripts:true

You can also utilize the success and error callbacks of the request to handle events more efficiently and help centralize your code, avoiding potential issues.

If you are using plain JavaScript and XmlHttpObject, you will need to manually locate all script tags in the response and execute them using eval().

Using AJAX to dynamically inject a JavaScript function into the webpage

Answer №1

Answer №2

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