in lib/dd.breakpoints.js [145:157]
var parseValue = function(val) {
if (typeof (val) === 'string') {
// Strip whitespace
val = val.replace(/\s/g, '');
// If val only contains digits, convert it to a number
if (/^\d+$/.test(val)) {
val = parseInt(val, 10);
}
}
return val;
},