Posted by Tool Man | Posted in Vintage Tools | Posted on 05-04-2009
Tags: blog, business, government, software, tools
Through concepts like Ajax and scripting languages such as PHP, we now have a much more robust tools with which to address the image. Thorugh Ajax that can dynamically load and display images without the rest of the page have to reload, which speeds the process considerably. We also have more control on what the user sees, while the screen or load images. Users are generally understanding of load times, provided they know what is happening. Thorugh Ajax and a little PHP magic, we can help the user experience seamless and enjoyable as possible.
The base load, handling and dynamics displaing images using PHP and Ajax.
Uploading images
I suppose it is necessary to bring a bit of bad news to Ajax at this point, no is possible upload process through the XMLHtrtpRequest Object. The reason for this is that javascript can not access the file system of your computer. While this is somewhat disappointing, there are still ways to do Ajax-like functionality of this wighout using the XMLHttpRequest object. Smart Developeres have discovered that you can use hidden iframes to send a request form, which allows one title = "Load image without refreshing the page"> Top wiothout image refresh.
I am designing a website with AJAX and PHP. My goal is to make every free full page update. I have done all over. I partially solved through IFRAME.
Setting the property of the iframe CSS display to none, the element is left of the page to be used by the upload form, but not visible to the end user. assiging a name for the iframe tag, Use the target attribute in form tag to send the request to the hidden iframe. Once you have the iframe set, you can make any charges you like, and then use Ajax to perform any additional functionality. Consider the following example, which will allow yout to upload an image to a folder on your specification. Consider the code, allowing you to create applications.
An Ajax-enabled file system load using hidden iframes to hide the load
The code to create form with a hidden iframe for processing
As you can see, is using the same functionality and is now used to load the image you just uploaded in its
Web page dynamically and without a screen refresh. The function of the load will still take place on form submission, but is now, along with a feature called the download to be triggered process_upload.php once the script has finished loading the image (determined by the load evernt). The doneuploading function has no parent frame of hidden IFRAME and good name as arguments. Then Ajax dyanmically users to upload the image of the item there speicified parent frame.
Im trying to create a page for a frameset site where users can upload images to see how it would look framed.
Image loading can be broken down into the following three steps he looked back:
* An HTML form with a Browse button to allow the client choose the file to upload
* A script for the loading process, validate the file, the name and put it in the file system
* Finally a page to advise the client of the load was successful
* Is there a solution based on AJAX or PHP-based solution to check the file size a user is trying to upload via a form.
* If the file size exceeds 2 MB more than we want to give a message to the user having to upload a file smaller
size.
You can upload the zip file of all your pictures in one shot. Can = "Load image using title zip file "> upload image using the zip file.
* You can create a zip file for the image file and another file doc.
* This script will find only jpg file loaded and one deletion.
* You can configure the extension to permitted or not permitted to use this script loaded.
About the Author:
I am Asif Khalyani. I am software Engineer. PHP and ajax free script download site phpasks
Article Source: ArticlesBase.com - Upload Image Without Refresh Page - Asynchronous Image File Upload Without Ajax
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