¿Cómo manejarás AJAX?

How will you handle AJAX?

Overcoming AJAX Call Challenges in Selenium WebDriver

• Explicit Waits. Setting a certain desired condition for the system in the code.
• Implicit Waits. You can also go for Implicit Waits, where you can decide on a certain amount of time you require WebDriver to poll the DOM for.
• Fluent Waits.
• WebDriverWait.

Handling AJAX calls is one of the common issues when using Selenium WebDriver. AJAX sends HTTP requests from the client to server and then process the server’s response without reloading the entire page. To handle AJAX controls, wait commands may not work. It’s just because the actual page is not going to refresh.

Implicit wait
Handling of AJAX calls using Implicit wait in Selenium Webdriver. An implicit wait will query the DOM for a specific period while locating one or more elements until they become available.

What is the best way to handle asynchronous data retrieval from the server as in AJAX applications? Run the test case at the slowest speed. Use the pause command. Use the “AndWait” commands.

AJAX calls are one method to load personalized content separately from the rest of the HTML document, which allows for the full HTML document to be cached, improving back end load time.

Ajax (also AJAX /ˈeɪdʒæks/; short for “Asynchronous JavaScript and XML”) is a set of web development techniques that uses various web technologies on the client-side to create asynchronous web applications.

For that, Selenium Webdriver has to use the wait method on this Ajax Call. So by executing this wait command, selenium will suspend the execution of current Test Case and wait for the expected or new value. When the new value or field appears, the suspended test cases will get executed by Selenium Webdriver.

How To Overcome Stale Element Reference Exception in Selenium:

1. Solution 1: Refreshing the web page.
2. Solution 2: Using Try Catch Block.
3. Solution 3: Using ExpectedConditions. refreshed.
4. Solution 4: Using POM.

You can store your promise, you can pass it around, you can use it as an argument in function calls and you can return it from functions, but when you finally want to use your data that is returned by the AJAX call, you have to do it like this: promise. success(function (data) { alert(data); });

Here is some sample JavaScript code where I use the jQuery library to send an Ajax request to a PHP script that does not exist: If you look at the code above, you will notice that I have two functions: success: The success function is called if the Ajax request is completed successfully. i.e. If the server returns a HTTP status of 200 OK.

During AJAX call the data is stored in XML format and retrieved from the server. The biggest challenge in handling Ajax call is knowing the loading time for the web page. Since the loading of the web page will last only for a fraction of seconds, it is difficult for the tester to test such application through automation tool.

How AJAX Works 1. An event occurs in a web page (the page is loaded, a button is clicked) 2. An XMLHttpRequest object is created by JavaScript 3. The XMLHttpRequest object sends a request to a web server 4. The server processes the request 5. The server sends a response back to the web page 6. The response is read by JavaScript

success: The success function is called if the Ajax request is completed successfully. i.e. If the server returns a HTTP status of 200 OK. If our request fails because the server responded with an error, then the success function will not be executed. error: The error function is executed if the server responds with a HTTP error.