How to break up a long running function in javascript, but keep performance

Question

I have a long running function. Which iterates through a large array and performs a function within each loop.

longFunction : function(){
       var self =          


        

Answer 1

Here's some batching code modified from an earlier answer I had written:

var n = 0,
    max = data.length;
    batch = 100;

(function nextBatch() {
    for (var i = 0; i < batch && n < max; ++i, ++n) {
        myFunc(n);
    }
    if (n < max) {
        setTimeout(nextBatch, 0);
    }
})();