I need to sort a big list of Javascript items and I'm using the sort function like this:
var sorted_list = non_sorted.sort(function(a,b){
// Sort stuff here
});
What I'd like to do is to call a function when the sort function is done.
Is it possible to add a callback function to sort or to trigger an event when when sort is over?
You are overcomplicating it. The sort method isn't asynchronous, so you don't need a callback or an event. Just put your code after the code that calls sort:
var sorted_list = non_sorted.sort(function(a,b){
// comparer
});
// The code just continues here after the sort
The sort function is synchronous so you can simply do something right after the call but if you want another way:
Array.prototype.sortCallback = function(compareFunction, resultFunction){
result = this.sort(compareFunction);
resultFunction(result);
}
Usage:
non_sorted.sortCallback(function(a, b) {
// Sort stuff here
}, function(sorted) {
// Do something with the sorted array
});
resultFunction(result) with resultFunction.apply(result, arguments) to allow arguments to be passed to resultFunction. But extending built–ins isn't a good idea.this is a little dirty but it works:
slow enough for the sort function (within reason) and faster than the naked eye.
function sort_with_callback() {
run_sort_function();
setTimeout(function() { run_callback()}, 3);}
.sort()is synchronous.arr.sort(comparefn).arrMethod()orsomeFn(arr.sort(comparefn))since sort returns the sorted object.