[SalesForce] reference a Static Resource in an HTML Area

If you want to get some file from zipped static resource, you can use getContent():

StaticResource static_resource = [SELECT Id, SystemModStamp
                                  FROM StaticResource 
                                  WHERE Name = 'My Zip Array'
                                  LIMIT 1];
String url_file_ref = '/resource/'
                    + String.valueOf(((DateTime)static_resource.get('SystemModStamp')).getTime())
                    + '/' 
                    + static_resource.get('Name')
                    + '/myfile.json';
PageReference file_ref = new PageReference(url_file_ref);
String res_json_body = file_ref.getContent().toString();

Please, remember, you can not always use this due to limitation on getContent() (it can not be used in triggers) and latest salesforce updates.

References:

• https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_System_PageReference_getContent.htm

you could attach your utility methods to the global window object(SecureWindow) and use it in your controller.

Static Resource: TestScript

(function(w){
    "use strict"; //Optional because LC on LockerService active runs in strict mode

    var utilMethods = {
        "method1":method1,
        "method2":method2
    };

    function method1(){
        console.log("method1 called");
    } 

    function method2(){
        console.log("method2 called");
    }

    w.myUtil = utilMethods;

})(window);

Component:

<ltng:require scripts="{!$Resource.TestScript}" afterScriptsLoaded="{!c.afterScriptsLoaded}" />
<ui:button label="Do job" press="{!c.doJob}"/>

Controller.js:

doJob : function(cmp){
     myUtil.method1(); // Print method1 called
     myUtil.method2(); // Print method2 called
}