Update xml using ajax

Your vvmsUrl is the link to the file, the file is on server, correct? So to update that file you'll need server side language. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.

Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled. I'm always a big fan of understanding what goes on under the hood as I believe it makes me a better programmer.

If you're reading this article, and you read the last one, then you believe the same. To follow along with this article, download the projects created in the last article. You should also read the previous article, so you know how these projects were created. There were three projects created in the last article, a. You need the. Download the projects at www.

Install this database into your SQL Server. After you've downloaded the sample projects to your hard drive, the first project to load is the Web API project. If you're using a node application, open a terminal window and type npm install. Then type npm run dev to start the Web server running and to have it display the index page in your browser.

If you're using the. The index page should now be displayed in your browser window. Go to your browser for the front-end Web server localhost and you should see a page that looks like Figure 1.

Open the Browser Tools in your browser, usually accomplished by clicking the F12 key. Click the Get Products button and you should see the product data retrieved from the Product table in the AdventureWorksLT database and displayed in your console window. Instead of displaying the list of product data in the console window, let's modify the page to display the product data in a table, as shown in Figure 2. Instead of writing code in JavaScript to build a table, let's use a templating engine to help build the table.

I've been using mustache. However, I'll show you exactly what to do, so you don't need to fully understand mustache to still follow along. To get your table to look like the one in Figure 2 , you need to add some styles.

Open the sites. Next, locate the form HTML element. Modify the form element to look like the following code snippet. Now it's time to add the HTML table where you're going to display the list of product information. Just above the form element, add the code shown in Listing 2. The button used to add a product isn't hooked up to the add function yet; you'll do that later in this article.

I know that many developers don't use these, but they're needed for the demo here. It's the properties from each of these objects you need to display in the HTML table. Using mustache. The values within the double curly braces are the names of the properties in each product object in the array passed back from the Web API.

Don't worry, you're going to create that very soon. The product. You need to add two additional functions to display the list of product data as an HTML table. This means that neither one is displayed when the page is loaded. After you build the product table, you want it to appear on the page, so create a function named displayList in the product.

Open the product. The code in the buildList function is passed in a JSON object that has a list property containing the array of product objects. This is how you match the name of a property to that data template. Pass both the HTML template and the vm object to the mustache render method.

This method loops through all the data in the array and creates the appropriate HTML for each product object. You now have almost all the various pieces built to support the building of the HTML table.

First, you need the JSON object with the list property to hold the product array. Within the if statement of the get function, replace the code within the if with the lines of code shown below. That array is placed into the vm. The view model object is passed to the buildList function where mustache is used to create the HTML from the template and this array of product data.

The final piece of refactoring is to call the get function after the index page has completely loaded. Add the following code to call the get function from the window. Save all the changes and go to your browser. If you've done everything correctly, you should see a page that looks like Figure 2. If you don't see this page, check the console window for any errors you may have accidently typed in.

Open the index page and replace the empty getProduct function with the code in the following snippet. The code above is very similar to the get function, except you pass a productId value after the URL. The value is what's passed into this function as the productId. This function is in the product. The last thing the getProduct function does is to call a function named displayDetail. All you need to do now is to somehow pass a product ID from the table to the getProduct function.

Add a new table header before all the other headers, as shown in the code below. Add the code shown below to create a new button and for each button's click event, call the getProduct function passing in the product ID for that product object.

Save all the changes in your pages and go back to the browser and you should now see an Edit button in the left-most column of the table. Click on any of those buttons and you should be shown the detail information for that product in the input elements of the form. To get back to the list of product data, click the Get Products button. Now, it's time to refactor the index page to add a button for adding a new product, and two buttons within the table for editing and deleting individual products.

In this case, the callback function should contain the code to execute when the response is ready. This means that both the web page and the XML file it tries to load, must be located on the same server. If you want to use the example above on one of your own web pages, the XML files you load must be located on your own server. With the XMLHttpRequest object you can define a callback function to be executed when the request receives an answer.

The onreadystatechange property defines a callback function to be executed when the readyState changes. The onreadystatechange function is called every time the readyState changes. The onreadystatechange event is triggered four times , one time for each change in the readyState.