jquery - Javascript - How to call any function with a string? -

i want know how call function string value

in other questions found this: window["functionname"](arguments);, , assume not working cause functions not global, , don't want them global.

i have example here:

(function ( $ ) {     "use strict";     var testing,     showme;      testing = function(){         alert('working');     };      showme = function(test){         window[test](arguments);     }      $(document).ready(function(){         showme('testing');     }); })(jquery); 

as can see, want call function, testing() using string value.

window object. can place inside arbitrary object:

(function ( $ ) {     "use strict";     var testing,     showme,     funcs = {};      funcs.testing = function(){         alert('working');     };      showme = function(test){         funcs[test](arguments);     }      $(document).ready(function(){         showme('testing');     }); })(jquery);