You can use the following to read local data:

// array to read

var testArray = ["c++", "java", "php", "coldfusion", "javascript", "asp", "ruby", "python", "c", "scala", "groovy", "haskell", "perl"];

// create datareader of array

var myReader = new wijarrayreader([{name: 'label'}, {name: 'value'}, {name: 'selected',defaultValue: false}]);

// create datasource

var datasource = new wijdatasource({

    reader: myReader,

    data: testArray,

    loaded: function (data){

                // get items by data.items

                var items = data.items;

            }

});

// load datasource, loaded event will be fired after loading.

datasource.load();