How to access the property function within a function object javascript -

the following code have written

var nums = [1, 5, 4, 2, 3]; var sortednums = [1, 2, 3, 4, 5];  var sorter = function makesorter() {     'sortnums': function(nums) {         return this.nums.sort();     }; };  qunit.test("numeric list can sorted", function(assert) {     var sorted = sorter.sortnums(nums);     assert.deepequal(sorted, sortednums, "passed!"); }); 

my supposition follows:

1. sorter function object referencing makesorter() function

2. sortnums property of makesorter turns out object , hence has function syntax

but produces error expected ";" on line sortnums declared.why?

this set property sortnums on sorter function provided. however, i'm not sure trying in accomplishing , there may better way design behavior you're trying accomplish.

  var nums = [1, 5, 4, 2, 3];   var sortednums = [1, 2, 3, 4, 5];    var sorter = function makesorter() {};   sorter.sortnums = function(nums) {       return this.nums.sort();   };    qunit.test("numeric list can sorted", function(assert) {       var sorted = sorter.sortnums(nums);       assert.deepequal(sorted, sortednums, "passed!");   }); 

in short, syntax error seems mixing function body declaration object literal. statements inside function body (between { , }) executed when function called. cannot define properties on function adding them in object literal syntax { prop : value }.

var sorter = {   sortnums: function(nums) {       return this.nums.sort();   } }; 

might more along lines of looking if sorter not need callable.