handleAllRouteListsDelete(r) {
  let self = this;
  for (let i = 0; i < r.length; i++) {
      this.handleRouteListDelete(r[i]);
  }
}
/**
* Event handler used to delete all routes from the database when the 
* user clicks on the delete all button.
* @param {Object} r The routeList object to be deleted.
*/
Event handler used to delete all routes from the database when the
user clicks on the delete all button.
Event handler used to delete all routes from the database when the user clicks on the delete all button .
handleAllRouteListsDelete(r) {
  let self = this;
  for (let i = 0; i < r.length; i++) {
      this.handleRouteListDelete(r[i]);
  }
}
handleAllRouteListsDelete ( r ) { let self = this ; for ( let i = 0 ; i < r . length ; i ++ ) { this . handleRouteListDelete ( r [ i ] ) ; } }
Event handler used to delete all routes from the database when the
user clicks on the delete all button.
Event handler used to delete all routes from the database when the user clicks on the delete all button .