get / set / delete url parameter javascript

urlParamTool

getUrlParameter: function (name) {
    return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search)||[,""])[1].replace(/\+/g, '%20'))||null;
  },
  setUrlParameter: function (name, value) {
    var search;
    if(this.getUrlParameter(name)){
      search = location.search.replace(new RegExp('([?|&]'+name + '=)' + '(.+?)(&|$)'),"$1"+encodeURIComponent(value)+"$3");
    }else if(location.search.length){
      search = location.search +'&'+name + '=' +encodeURIComponent(value);
    }else{
      search = '?'+name + '=' +encodeURIComponent(value);
    }
    //router.navigate(location.pathname + search, {trigger: true});
  },
  deleteUrlParameter: function (name) {
    var search;
    if(this.getUrlParameter(name)) {
      search = location.search.replace(new RegExp('([?|&]'+name + '=)' + '[^&]+'),"");
      if (search.indexOf('?') === -1) {
        search = '?' + search;
      }
    } else {
      search = '';
    }
    //router.navigate(location.pathname + search);
  }