Download Ajax on Rails by Scott Raymond PDF

By Scott Raymond

Learn how to construct dynamic, interactive net functions utilizing the 2 most crucial methods to internet improvement at the present time: Ajax and the phenomenally effective Ruby on Rails platform. This ebook teaches intermediate to complex internet builders the way to use either Ajax and Rails to fast construct high-performance, scalable functions with out being beaten with hundreds of thousands of strains of JavaScript code. greater than simply recipes, you furthermore may get an intensive, low-level knowing of what's occurring less than the hood. * Ajax on Rails contains 3 absolutely labored out Rails/Ajax functions, and speedy reference sections for Prototype and script.aculo.us.
* trying out classes make it easier to get rid of cross-browser JavaScript mistakes and DOM debugging nightmares utilizing a mixture of Firebug, and Venkman.
* complicated fabric explains the most up-tp-date layout practices for Ajax usability. You'll learn how to stay away from consumer event blunders with confirmed layout patterns.
past the how-to, Ajax on Rails is helping you think about whilst Ajax is (and isn't) acceptable, and the trade-offs linked to it. For these new to Rails, this publication presents a brief advent, the large photo, a stroll in the course of the set up method, and a few tips about getting all started. If you've already set to work with Rails and search to deepen your ability set, you'll locate dozens of examples drawn from real-world tasks, exhaustive reference for each appropriate function, and specialist suggestion on tips on how to "Ajaxify" your functions.

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Fill the form and click on the GO button. The browser will display the values of form elements in a query string format, as shown in the following screenshot: 48 Chapter 2 How it works... The serialize() method of jQuery turns form elements into query string format. Rather than getting each value manually and creating a query string, this function can be very handy when you want to send the values of all form elements as a part of AJAX requests. You can use any of the methods like GET or POST to send this data to the server.

1. html. 2. Let us design the page first. Create an unordered list and apply some CSS to it. The first item in this list will be a checkbox that will work as a handle to toggle other checkboxes. Then create other items in the list: names of books each having a checkbox before it. All these checkboxes have the same class name toggle. Create another list item consisting of a button that will be used to display the selected books. Finally, create a last list item and assign an ID to it. We will use it to display selected book names.

There's more... serializeArray() method Another useful function for getting values of form elements is serializeArray(). This function turns all the elements into a JavaScript object. serializeArray(); If the form has two textboxes named input1 and input2 and their values are value1 and value2 respectively then the object will be created as shown below: [ { input1: 'value1' { input2: 'value2' }, }, ] 49 Combining PHP and jQuery Not all values are serialized Remember that Submit buttons and File select elements are not serialized.

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