A useful function function overValues(f) { return function(x) { return f(x); } } Then you can do ['10', '10', '10'].map(overValues(parseInt)); Howev

A useful function function overValues(f) { return function(x) { return f(x); } } Then you can do ['10', '10', '10'].map(overValues(parseInt)); However, usually you're going to want to do the equivalent of this ['0101', '032'].map(function(s) { return parseInt(s, 10); }) Because Javascript interprets a leading zero as an indicator of base.