-1
之間的性能差異鑑於這兩個片段,這將是更有效的(考慮到了約20000點的數據集):Lodash:在_.filter和_.each
_.each
片段:
var someIds = getIds(); //someIds is an array of ids in data
var resultEach = [];
_.each(data, function(dataItem, index){
if (someIds.indexOf(dataItem.id) != -1){
resultEach.push(dataItem);
}
});
_.filter
片段:
var someIds = getIds(); //someIds is an array of ids in data
var resultEach = _.filter(data, function (dataItem) {
return someIds.indexOf(dataItem.id) != -1;
});
我跑這個測試:http://jsperf.com/filter-vs-each-lodash 看來,過濾器是有點快日一個_each ... 這是另一個更復雜的例子: http://jsperf.com/complex-filter-vs-each-lodash
你知道什麼是差異的根源?
你爲什麼不試試jsperf並找出自己的? – Andy
https://jsperf.com/ – epascarello
看看他們的來源,盧克! – Bergi