cant find jquery.js for rails app

i have an error , when trying to use highcharts.

开发者_如何学运维javascript_include_tag "jquery-1.4.2.min","rails","highcharts" 

"C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/jquery-rails-1.0.14/vendor/assets/javascripts/jquery.js isn't in paths: C:/Users/Home/proj/lp/app/assets/images, C:/Users/Home/proj/lp/app/assets/javascripts,..."

i am newbie. using rails 3.1.0 Dont know what to do.

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Instead of this:

javascript_include_tag "jquery-1.4.2.min","rails","highcharts"

Use this:

javascript_include_tag "application"

Then configure your js in application.js:

like so:

//= require jquery-1.4.2.min
//= require rails
//= require highcharts

Information regarding how to format your assets so that they are brought in the way you want them is located here:

http://guides.rubyonrails.org/asset_pipeline.html#manifest-files-and-directives

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Try just renaming your app/assets/javascripts/jquery-1.4.2.min.js to jquery.js. I think somewhere you're trying to include the file by just jquery.js and it's not finding it. If you do this, make sure you change all references to jquery-1.4.2.min.js to point to just jquery.js