directive_example.js

angular.module("testModule", [])
    // syntax: module.directive("namespaceName", factory)
    // factory will be invoked once by $compiler to create a directive for the first time match happens
    // and invoked via $inject.invoke makes it injectable just like a controller.
    .directive("testDirective", function directiveFactory($log) {
        var directiveDefinitionObject = {};
        
        return directiveDefinitionObject;
        
        // or return a constructor function
        // Prefer using the definition object over returning a function.
    });