JavaScriptLocalizer

Localizes strings inside JavaScript files when they run though ASP.NET Optimization.

It works with any ResourceManager types, including Resource files (.resx).

The JavaScriptLocalizer will determine what language to apply by examing variuos things about the current request.

The order of which it determins the language is:

• The QueryString parameter "lang"
• The Aceept-Language HTTP header
• and finally the application defaults

Setup

The JavaScriptLocalizer plugs in to the BundleTable. To use it you must first declare your bundles:

ScriptBundle scripts = new ScriptBundle("~/locscript");
scripts.Include("~/scripts/loc1.js", "~/scripts/loc2.js");

Then add the LocalizerTransform to the bundle and specify your resource:

scripts.Transforms.Add(new LocalizationTransform(typeof(Resources.text)));

In this case, a .resx file with the name text is used.

And finally add the ScriptBundle to the BundleTable:

BundleTable.Bundles.Add(scripts);

Now you have the bundles configured to use the JavaScriptLocalizer.

You need to use the LocScript.Render() method to include your bundled scripts on your pages:

@LocScripts.Render("~/locscript")

That will automatically append the current language as a URL parameter and produce this output:

<script src="/locscript?lang=en-US&v=Fn60oK0d4Rp7vKzYVdh4fKui3uBPccGcZXSmges4aac1"></script>

Using it in JavaScript

The JavaScriptLocalizer looks for patterns in your script files to localize. The pattern uses colons and looks like this:

demo.innerHTML = "::nameOfPage::";

The above maps directly to the resx key Resources.text.nameOfPage.