Peleus here with the second major 2012 security announcement for Flash Player. Today’s release of Flash Player contains a new background updater. Acrobat, Reader, Adobe Reader, Enterprise Administration, Acrobat Products, registry, plist, deployment, configuration, wizard, GPO, AIP, Citrix, AppV. Note: When a RAW file is opened in Adobe Camera Raw Plugin ACR, a curve is applied by default, so it doesn't look so weird, but we can apply various curves and many. Find solutions to installation errors that occur in Adobe Creative Suite applications. Keep track of latest updates of all Adobe Products. Learn more. The essential tech news of the moment. Technology's news site of record. Not for dummies. Searches the PDF for items that may not be apparent, such as metadata, file attachments, comments, and hidden text and layers. The search results appear in a dialog. Is Windows Update enabled on your PC? Windows Update protects you from security vulnerabilities by keeping Windows, Internet Explorer, and Microsoft Office up-to-date. Applied j. Query: Being Effective with AJAX . For most developers and designers, these shorthand methods will be all that they ever need to use. The j. Query AJAX shorthand methods post, get, and load are featured in this chapter. This chapter is from the book . For most developers and designers, these shorthand methods will be all that they ever need to use. The j. Query AJAX shorthand methods post, get, and load are featured in this chapter. I'll show you how to use several of j. Query's AJAX features to enhance Web sites and applications. Let's start by completing the form validation that you started in Chapter 3. Simply put, AJAX (Asynchronous Java. Script and XML) lets you use Java. Script to send and receive information from the server asynchronously without page redirection or refreshes. You can use AJAX to grab information and update the Web page that your user is currently viewing with that information. Complex requests can be made to databases operating in the background. When new users register to use the Web site, they need to have unique user names. Their user name will be associated with other information, such as photos they upload or articles they write. It will be the key that lets them update information about the photos they submit. Make sure that you first set up the database for the Web site by running the SQL file chap. Running this script in My. SQL or any other database platform will create the Web- site's database, a user for that database, and the table that will be used to store Web- site visitor registration information. You can then start building the PHP file that will respond to the actions the AJAX functions will request. Building the PHP Registration and Validation File. Photographers who want to share their images and perhaps write articles on photography will need a way to register information with the site that will allow them to log in and gain access to site features not accessible to nonregistered users. You can create an interaction for this that will appear very slick to the user. With j. Query's AJAX functionality, you can avoid page reloads or redirections to other pages (Figure 4. The AJAX engine will send the requests to the PHP scripts on the server without disruption to the user experience. Figure 4. 1 The difference between a typical HTTP request and the XMLHttp. Request utilized by j. Query's AJAX methods. Using PHP and j. Query, you'll create the functions that will support the registration interaction. Open a new text file and save it as chap. Register. php. The proper function will be called based on the name of the form used in the AJAX function. Use PHP's switch method to determine which form is submitted and set up the first case for the registration form. Insert commas in the correct place, and close the initial statement with a closing parenthesis. Insert .= . This is the PHP code that checks the user name to see if it exists in the database. Create a SQL query that selects the user name typed into the registration form from the user database: . If the name is not in the database, the row count is 0. Assign the count of the number of rows returned by the query to the database. Count = mysql. Let's complete the login section of the PHP file. Set up the case statement for the login code. Check to see if the user name and password are set. If the user name and password are correct, this value will be 1: $login. Count = mysql. A cookie is a small file that is placed on the visitor's computer that contains information relevant to a particular Web site. If the user wants to be remembered on the computer accessing the site, the user can select the check box shown in Figure 4. Figure 4. 2 The check box a user can click to be remembered. The user will not have to log in again until the cookie associated with this action expires or is removed from the computer. If the login attempt is good, determine what information should be stored in the cookie. Count)? A year is usually sufficient time for any cookie designed to remember the user. The information in the $domain variable ensures that the cookie will work on a localhost as well as any other proper domain. Create the cookie and echo the $login. Count for AJAX to use. Cookie. Value, $pe. Cookie. Expire. '/', $domain, false). Count; Set a cookie to expire when the browser closes if the user has not selected the remember option. The value should be 0. The form should provide immediate feedback to users and prompt them to make changes to their information prior to the form being submitted. The form input (in chap. The value in each pair is quoted when sending the raw data. Variables such as new. Name do not need the quotes. The results of calling the inc/pe. Register. php script will automatically be stored for later processing in the data variable. Define the callback for the post function and pass the data variable to the function, so that the results can be processed: . You'll recognize most of this conditional statement because it is similar to how validation error messages were delivered in Chapter 3. Count). Who knew there were two of them? The registration function needs to submit the user's data or let the user know if there are still errors with the submission. If there are errors, the user needs to be prompted to fix the registration. Start the registration function by binding the registration form to the submit method: $('#register. Form'). submit(function(e) . To stop that from happening, you set the event to prevent. Default. e. prevent. Default(); Serialize the form data. The serializing creates a text string with standard URL- encoded notation. For most forms, this notation is in the form of key=value pairs. Data = $(this). serialize(); Now you can invoke the j. Query AJAX post method by providing the URL to post to and the serialized form data, and setting up a callback function: $. Register. php', form. Data, function(data) . If not, it will return a higher number, indicating that the user could not be added. Store the information returned by the AJAX function in the mysql. Error. Num variable: var mysql. Error. Num = data; If an error is returned, you'll want to provide users with a prompt to let them know that they need to correct the information. The information is provided in a modal window as you have done before. Figure 4. 4 shows the modal window that you will set up next. Figure 4. 4 The modal prompt letting users know that they need to correct their registration information. In the background you can see that the user name is already taken; this must be changed. Test the value of the variable mysql. Error. Num to set up a conditional statement. Error. Num > 0). Keeping Photoshop Up- To- Date. Many software issues are resolved by simply updating Photoshop and Adobe Camera Raw to the latest version. For details and instructions, see: Photoshop Help / Keep Photoshop up to date. Table of Contents: Looking for info on older versions of Photoshop? See: Legacy version updates.
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