Manipulating Components with jQuery Mobile

Posted: March 28th, 2012Author:

Do you know how to take advantage of custom JavaScript when working with visual components? You can easily access any component in JavaScript via the JavaScript API and manipulate it with the jQuery Mobile API. Here is an example of how to dynamically add items to a list using JavaScript.

On the page, we have the following components: a list named platformsList, a text input named newPlatformField, and a button.

We are going to execute custom JavaScript code on the button click event. Select the button first, go to Events tab in the right panel, and then add a Click event with an action called Run Custom JavaScript.

Paste in the following code:

Note the way we address components using the API. In order to get the reference to the component with a particular name for use in JavaScript we use the following API call:

In the code above, we put a reference for a list component into a list variable and put the value of the text input into a newPlatform variable using the jQuery val function. Then, we use the append method to add a new item with the text we’ve entered in the field and refresh the view using the listview method. Finally, we clear the value of the input field.

Let’s test the project in the browser. As you might already know, we are working on Blackberry and Windows Phone support for, so let’s add them into our list.

Updated 3/29/2012

The post was changed to reflect use of the JavaScript API.