关于前端:axios-请求参数去空

const filterNullParams = (params, allValue) => {  Object.keys(params).filter(    key => (      params[key] === ''      || params[key] === undefined      || params[key] === null    )      && delete params[key]  );  return params;} const queryList = () => {    const reqData = {      a: 1,      b: '',      c: -1,    }    axios.get('xxxxxxx', { params: filterNullParams(reqData) })      .then(res => res.data)      .then((res) => {        // 代码      });  }