Loop through all elements with class 'blah' and find the highest id value

Question

I have a bunch of elements like:

..

I want to loop through all of them and get the highest

Answer 1

I'd go for this, using .map, .get and .sort:

$('.blah').map(function(){
    return parseInt(this.id.split('-')[1], 10);
}).get().sort(function(a, b) {
    return b - a;
})[0];