url参数操作

function getQueryString(name) {
  if (URLSearchParams) {
  // https://developer.mozilla.org/zh-CN/docs/Web/API/URLSearchParams
  const params = new URLSearchParams(location.search.replace(/\?/ig, ""));
    return params.has(name)? params.get(name) : null
  } else {
    const reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    const r = window.location.search.substr(1).match(reg);
    if (r != null) return unescape(r[2]); return null;
  }
}

// https://developer.mozilla.org/zh-CN/docs/Web/API/URLSearchParams
const params = new URLSearchParams(location.search.replace(/\?/ig, "")); 
// location.search = "?name=yajun&sex=female"
params.has("yajun"); // true
params.get("sex"); // "female"

/*获取网址参数*/
getQueryString(name) {
  var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
  var r = window.location.search.substr(1).match(reg);
  if (r != null) return unescape(r[2]); return null;
}

/*获取全部url参数,并转换成json对象*/
getAllQuery (url) {
    var url = url ? url : window.location.href;
    var _pa = url.substring(url.indexOf('?') + 1),
        _arrS = _pa.split('&'),
        _rs = {};
    for (var i = 0, _len = _arrS.length; i < _len; i++) {
        var pos = _arrS[i].indexOf('=');
        if (pos == -1) {
            continue;
        }
        var name = _arrS[i].substring(0, pos),
            value = window.decodeURIComponent(_arrS[i].substring(pos + 1));
        _rs[name] = value;
    }
    return _rs;
}

/*删除url指定参数，返回url*/
delQuery(url, name){
    var baseUrl = url.split('?')[0] + '?';
    var query = url.split('?')[1];
    if (query.indexOf(name)>-1) {
        var obj = {}
        var arr = query.split("&");
        for (var i = 0; i < arr.length; i++) {
            arr[i] = arr[i].split("=");
            obj[arr[i][0]] = arr[i][1];
        };
        delete obj[name];
        var url = baseUrl + JSON.stringify(obj).replace(/[\"\{\}]/g,"").replace(/\:/g,"=").replace(/\,/g,"&");
        return url
    }else{
        return url;
    }
}