解析 URL Params 为对象

Question

支持对象和数组

function parseParams(url) {
  let params = {};
  let queryString = url.split("?")[1];
  if (queryString) {
    queryString = queryString.split("#")[0];
    let pairs = queryString.split("&");
    for (let i = 0; i < pairs.length; i++) {
      let [key, value] = pairs[i].split("=");
      key = decodeURIComponent(key);
      value = decodeURIComponent(value);

      let keys = key.split("[");
      let obj = params;

      for (let j = 0; j < keys.length; j++) {
        let k = keys[j].replace("]", "");
        if (j === keys.length - 1) {
          if (obj[k]) {
            if (!Array.isArray(obj[k])) {
              obj[k] = [obj[k]];
            }
            obj[k].push(value);
          } else {
            obj[k] = value;
          }
        } else {
          if (!obj[k]) {
            obj[k] = {};
          }
          obj = obj[k];
        }
      }
    }
  }
  return params;
}