Asp net postback with javascript

ASP.NET is a popular programming language used for developing web applications. One common question that arises when working with ASP.NET is how to postbacks with JavaScript. In this article, we will explore different approaches to solve this question and provide to illustrate the solutions.

Approach 1: Using __doPostBack()

One way to handle postbacks with JavaScript in ASP.NET is by using the __doPostBack() function. This function allows you to trigger a postback event from -side JavaScript code. Here's an example:





In this example, we have a JavaScript function called performPostback() that the __doPostBack() function with the ID of the button (‘myButton') as the first parameter. This triggers a postback event on the server-side when the button is clicked.

Approach 2: Using AJAX

Another approach to handle postbacks with JavaScript in ASP.NET is by using AJAX (Asynchronous JavaScript and XML) techniques. AJAX allows you to update of a web page without reloading the entire page. Here's an example:





In this example, we use the jQuery library to make an AJAX request to the server-side code. The server-side code is defined in the “MyPage.aspx/PerformPostback” URL. The data parameter is empty in this example, but you can pass data to the server if needed. The success and error handle the response from the server and any errors that may occur.

Conclusion

postbacks with JavaScript in ASP.NET can be achieved using different approaches. The __doPostBack() function and AJAX techniques are two common methods to accomplish this. Depending on your requirements and preferences, you can choose the approach that best suits your needs.

Remember to test your code and ensure it works as expected. With the examples provided in this article, you should now have a better understanding of how to handle postbacks with JavaScript in ASP.NET.

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