Dataset can be filtered by one of multiple parameters. To apply simple one parameter filtering , code similar to the next can be used

//will show object where string "Alex" exists in Maintainer name
//by default filtering is case insensitive
    view.filter("Maintainer","Alex");

If some more complex filtering need to be applied, it possible through providing of filtering method as first parameter

    view.filter(function(obj){
        if (obj.valueA > 10 && obj.valueB < 100) return true;
        return false;
    })

Filtering method receives the object and filtering value ( if it was provided as part of filter command ). Result of method must be true - if object need to be shown and false otherwise.