javascript_include_tag(*sources) public

Returns a script include tag per source given as argument. Examples: 

  javascript_include_tag "xmlhr" # =>
    <script type="text/javascript" src="/javascripts/xmlhr.js"></script>

  javascript_include_tag "common.javascript", "/elsewhere/cools" # =>
    <script type="text/javascript" src="/javascripts/common.javascript"></script>
    <script type="text/javascript" src="/elsewhere/cools.js"></script>

  javascript_include_tag :defaults # =>
    <script type="text/javascript" src="/javascripts/prototype.js"></script>
    <script type="text/javascript" src="/javascripts/effects.js"></script>
    ...
    <script type="text/javascript" src="/javascripts/application.js"></script> *see below

If there’s an application.js file in your public/javascripts directory, javascript_include_tag :defaults will automatically include it. This file facilitates the inclusion of small snippets of JavaScript code, along the lines of controllers/application.rb and helpers/application_helper.rb.

Show source
Register or log in to add new notes.
December 2, 2009
1 thank

IE GOTCHA - multiple javascript_include_tags with cache => true

If you have multiple lines of javascript_include_tag ‘jsfile’, :cache => true, IE does not load them all (though it seems Firefox and Safari do). And the error won’t show up until you’re in production (since that’s only when caching kicks in.)

You should include them all on one line: 

   javascript_include_tag 'file1.js', 'file2.js', 'file3.js', :cache => 'myfiles'