hussion

var throttle = function(fn, wait) {
  var start = 0, remain = 0;
  return function() {
    var self = this, args = arguments;
    remain = Date.now() - start;
    if (remain >= wait) {
      start = Date.now();
      setTimeout(function() {
        fn.apply(self, args);

hussion

function requestMultiUrls(urlArray) {
  "use strict";
  var config = {
    limit: 6
  }; // Each send request limit
  var limit = config.limit,
  cursor = 0,
  index = 0;
  function toRequest(urls, len) {
    if (len) limit = len;