thenBy.js

thenBy is a javascript micro library that helps sorting arrays on multiple keys. It allows you to use the native Array::sort() method of javascript, but pass in multiple functions to sort that are composed with firstBy().thenBy().thenBy() style.

Example:

// first by length of name, then by population, then by ID
data.sort(
    firstBy(function (v1, v2) { return v1.name.length - v2.name.length; })
    .thenBy(function (v1, v2) { return v1.population - v2.population; })
    .thenBy(function (v1, v2) { return v1.id - v2.id; })
);

To include it into your page/project, just paste the minified code from https://raw.github.com/Teun/thenBy.js/master/thenBy.min.js into yours (137 characters).

Thanks a lot to https://github.com/bergus for his improvements.

iliyaskhan/thenBy.js

thenBy.js