Anime Ratings

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anime ratings

Ajax Rating Script - Php & MySQL


Frequent visitors of ajax enabled websites, such as ajaxian, have all witnessed them: ajax rating widgets. They are flashy, animated, you can use them to rate content (Usually without refreshing the page) and if you could, would present them to your parents and marry them. Compared to the classic rating system, such as the IMDb, they incite people to click on them, reducing the effective method of rating that is just a click.
In this tutorial, I want to show you how JavaScript to create a framework to show the animated rating widget and how to connect it to your server backend by using some of the most common frameworks Ajax out there. I clearly separate page creation functions from JavaScript and ratings backend, to allow the script to be as flexible as possible and to be easily integrable into your existing website.
This tutorial is not meant to present to you a complete script (though you can just copy and paste the results on your website and do this work without any problems), but rather to explain the design and implementation of processes that enable you to create your own widgets if you need to. Getting Started with HTML markup

What It Is

This is a rating bar script done with PHP and MySQL that allows users on things like rates can make all the web 2.0-like with no page refresh. This is a major improvement on the previous version because it was quiet now, meaning that if Javascript is off it will still work (although the page refreshes). You can also set the number of rating units you want to use (ie say, 4 stars, 5 stars or 10 stars) to someone in person basis (see samples below or read the docs). Some other changes were made to also see the docs for details. Note that this script is not tied to any particular system (like WordPress), so you should be able to adapt it to your situation without too many problems. What are you waiting for? Check out the demo Ajax Rating .

It is most important no line breaks in this code, as this will complicate the Dom tree unnecessarily. If you are not sure about what I just said, please read W3Schools Dom HTML Tutorial for further reference, because we are going to be accessed directly from the Dom within our JavaScript.
As you can see, the container div is fairly easy language to develop server-side scripting, which requires most of the time only one line:
printf ("% s", ratingId, rating);

The "continue" keyword in our JavaScript code, as in most other programming languages, continue to the next iteration of the loop and prevents the execution of the rest of the code at the time of repetition. Read rating value

Now that we are all ratings containers, we can start by reading the rating value written as text within the container div. To read this value, we access the first child node of the div container, which is a TextNode, and access nodeValue it, which returns the CDATA text nodes in the case of text. This is done through the following lines:
var rating = ratings [i]. firstChild.nodeValue;

No graceful way to recover from error, so I just decided to proceed to the next container rating and prevent errors from happening in the backend server.
Now, we need to loop over the number of stars to display and check what is that graphic image is displayed on the star. Using HTML function createElement Dom (), we initiate a new image and progressively add value to the corresponding element. Of course, the first thing we are interested in is the image display: We could either test rating against the current amount of times or we may be reducing the rating value to each iteration and testing against 1, 0.5 and 0. I decided reducing the rating on each iteration, which presents me with three simple test cases: if the rating is greater than or equal to 1, the star is "on", If the rating is exactly 0.5, the star is "half" on the other hand, the star is "off". Results in the following code:
for (var j = 0, j (
var star = document.createElement ('img');
if (rating> = 1)
star.setAttribute ('src', '. / Images / stars / rating_on.gif ');
rating -;
else if (rating == 0.5)
star.setAttribute ('Src', '. / Images / stars / rating_half.gif');
rating = 0;
star.setAttribute ('src', '. / Images / stars / rating_off.gif ');
ratings [i]. appendChild (star);


Our JavaScript is currently allows us to transform a special container marked with animated div rating widget that we can use to link specialized Ajax frameworks our backend servers. HTML markup will be completely separated from the JavaScript code, which would leave the user with a not very modern but still visual display current rating in case JavaScript is disabled. I've put together a ZIP file with the current results, which contains an HTML file, a CSS file, the JavaScript files and images. Connect the widget server with different frameworks

Please be sure to remove the "Window.onload = init_rating;" line "script.js" file if you downloaded the. Zip file, because we are using the special structure onload event.
The examples below are just an illustration of how this task was given to achieve a variety of different JavaScript frameworks. It should not be used as a reference about what the structure is superior because each plot following the same route and have the same goals. Before jumping to conclusion, you should read more sources and also hear each site. There are good reasons for not having $ dojo operators and some interesting points can be found here (in comments). When you need decide which structure you choose, your decision based on your specific tasks and the framework you are most comfortable with. PHP backend

About the Author

I am Asif Khalyani. I am software Engineer. PHP and ajax free script download site phpasks. User can download ajax rating script

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