Module: ActionView::Helpers::JavaScriptHelper

Contents:

Provides functionality for working with JavaScript in your views.

For information on using Ajax, see ActionView::Helpers::PrototypeHelper.
For information on using controls and visual effects, see ActionView::Helpers::ScriptaculousHelper.

Rails includes the Prototype JavaScript framework and the Scriptaculous JavaScript controls and visual effects library. If you wish to use these libraries and their helpers (ActionView::Helpers::PrototypeHelper and ActionView::Helpers::ScriptaculousHelper), you must do one of the following:

Use <%= javascript_include_tag :defaults %> in the HEAD section of your page (recommended): This function will return references to the JavaScript files created by the rails command in your public/javascripts directory. Using it is recommended as the browser can then cache the libraries instead of fetching all the functions anew on every request.
Use <%= javascript_include_tag ‘prototype’ %>: As above, but will only include the Prototype core library, which means you are able to use all basic AJAX functionality. For the Scriptaculous-based JavaScript helpers, like visual effects, autocompletion, drag and drop and so on, you should use the method described above.
Use <%= define_javascript_functions %>: this will copy all the JavaScript support functions within a single script block. Not recommended.

For documentation on javascript_include_tag see ActionView::Helpers::AssetTagHelper.

Constants
JAVASCRIPT_PATH

Public Methods
button_to_function	Returns a button that’ll trigger a JavaScript `function` using the onclick handler.
define_javascript_functions	Includes the Action Pack JavaScript libraries inside a single <script> tag. The function first includes prototype.js and then its core extensions, (determined by filenames starting with "prototype"). Afterwards, any additional scripts will be included in undefined order.
escape_javascript	Escape carrier returns and single and double quotes for JavaScript segments.
javascript_cdata_section
javascript_tag	Returns a JavaScript tag with the `content` inside. Example:
link_to_function	Returns a link that will trigger a JavaScript `function` using the onclick handler and return false after the fact.

Protected Methods
array_or_string_for_javascript
options_for_javascript

Private Methods
block_is_within_action_view?

JavaScriptHelper