声明Marionette / Backbone路由器没有未使用的变量 - JSLint

Question

I'm in a refactoring stage right now, and I'm getting the familiar 'Unused variable' JSLint when declaring and instantiating a Marionette Router. Here is my code:

App.Application.addInitializer(function () {

        var globalRouter = new App.Routers.GlobalRouter({
            controller: new App.Controllers.GlobalController()
        });

        //Start Backbone History
        Backbone.history.start();

});

The error I get is:

 unused 'globalRouter'

Basically, I'm using a variable declaration to create the router before I start my app. I'm trying to avoid doing this:

       new App.Routers.GlobalRouter({
            controller: new App.Controllers.GlobalController()
        });

As it just introduces a different JSLint error, saying 'Do not use 'new' for side effects'. Does anyone have any advice on this?

In addition, I've tried adding:

 /*jslint unparam: true */

but this does not work :(

Answer 1

The following code is debatable, but you could use an IIFE like this:

App.Application.addInitializer(function () {
    (function(){
        return new App.Routers.GlobalRouter({
            controller: new App.Controllers.GlobalController()
        });
    }());
});

Or use an intermediate variable:

App.Application.addInitializer(function () {
    (function(){
        var router = new App.Routers.GlobalRouter({
            controller: new App.Controllers.GlobalController()
        });
        return router;
    }());
});

On a side note, since you're refactoring, I would start history in an "initialize:after" listener to ensure all routing controller have been initialized before a routing event is triggered.