November 2012
Intermediate to advanced
888 pages
54h 46m
Polish
Content preview from Ruby. Receptury
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15.15. Dodawanie efektów DHTML z wykorzystaniem biblioteki script.aculo.us
Problem
Chcemy wprowadzić ciekawe efekty w aplikacji, na przykład zanikanie treści, bez konieczności pisania w tym celu kodu w języku JavaScript.
Rozwiązanie
Każda aplikacja Rails ma dostęp do wbudowanych bibliotek JavaScript, które umożliwiają tworzenie efektów Ajax i DHTML. Aby umieścić elementy DHTML w witrynie Rails, nie trzeba nawet pisać kodu JavaScript.
Po pierwsze, należy zmodyfikować główny szablon układu (zobacz „15.3. Tworzenie układu nagłówka i stopki”), aby wywołał funkcję javascript_include_tag w obrębie znacznika <HEAD>:
<!-- app/views/layouts/application.rhtml -->
<html>
<head>
<title>Moja witryna WWW</title>
<%= javascript_include_tag "prototype", ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.