Sha256: 2b91b98116342ed108aff64491a34714fa08af78d809501602174b138f759ef7
Contents?: true
Size: 879 Bytes
Versions: 4
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Stored size: 879 Bytes
Contents
(function($, corkboard) {
// Ported to JS from weighted_randomizer Ruby gem.
function WeightedRandomizer(setup) {
this.normalize(setup);
}
// Surfaced as part of the corkboard namespace.
corkboard.WeightedRandomizer = WeightedRandomizer;
WeightedRandomizer.prototype.normalize = function normalize(setup) {
var dict = {};
var sum = 0.0;
$.each(setup, function(key, weight) {
sum += weight;
});
$.each(setup, function(key, weight) {
dict[key] = (weight / sum);
});
this.normalized = dict;
};
WeightedRandomizer.prototype.sample = function sample() {
var pick = Math.random();
var result;
$.each(this.normalized, function(key, weight) {
result = key;
if(pick <= weight) {
return false;
}
pick -= weight;
});
return result;
};
})(jQuery, jQuery.corkboard);
Version data entries
4 entries across 4 versions & 1 rubygems