Improved www.ttss.krakow.pl
Jacek Kowalski
2019-03-13 4bfa367f643d1c644dada6776fda660df530b92b
Use arrays to store vehicle data and TTSS URLs
5 files modified
472 ■■■■■ changed files
common.js 11 ●●●●● patch | view | raw | blame | history
index.html 4 ●●●● patch | view | raw | blame | history
index.js 18 ●●●● patch | view | raw | blame | history
map.html 4 ●●●● patch | view | raw | blame | history
map.js 435 ●●●●● patch | view | raw | blame | history
common.js
@@ -1,9 +1,12 @@
"use strict";
//var ttss_trams_base = 'http://www.ttss.krakow.pl/internetservice';
var ttss_trams_base = 'proxy_tram.php';
//var ttss_buses_base = 'http://91.223.13.70/internetservice';
var ttss_buses_base = 'proxy_bus.php';
var ttss_urls = {
    t: 'proxy_tram.php',
    // t: 'http://www.ttss.krakow.pl/internetservice',
    b: 'proxy_bus.php',
    // b: 'http://91.223.13.70/internetservice',
};
var ttss_types = ['t', 'b'];
// Special directions
var special_directions = {
index.html
@@ -135,7 +135,7 @@
        </div>
        <script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha384-tsQFqpEReu7ZLhBV2VZlAu7zcOV+rXbYlF2cqB8txI/8aZajjp4Bqd+V6D5IgvKT" crossorigin="anonymous"></script>
        <script type="text/javascript" src="lang_pl.js?v4" id="lang_script"></script>
        <script type="text/javascript" src="common.js?v4"></script>
        <script type="text/javascript" src="index.js?v2"></script>
        <script type="text/javascript" src="common.js?v7"></script>
        <script type="text/javascript" src="index.js?v3"></script>
    </body>
</html>
index.js
@@ -88,14 +88,9 @@
    
    loading_start();
    
    var url = ttss_trams_base;
    var prefix = stopId.substr(0, 1);
    var stop = stopId.substr(1);
    var prefix = 't';
    if(stopId.startsWith('b')) {
        url = ttss_buses_base;
        stop = stopId.substr(1);
        prefix = 'b';
    }
    var url = ttss_urls[prefix];
    
    stop_id = stopId;
    
@@ -191,14 +186,9 @@
    
    console.log('loadRoute(' + tripId + ')');
    
    var url = ttss_trams_base;
    var prefix = tripId.substr(0, 1);
    var trip = tripId.substr(1);
    var prefix = 't';
    if(tripId.startsWith('b')) {
        url = ttss_buses_base;
        trip = tripId.substr(1);
        prefix = 'b';
    }
    var url = ttss_urls[prefix];
    
    route_id = tripId;
    route_vehicle_info = vehicleInfo;
map.html
@@ -25,7 +25,7 @@
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList"></script>
<script src="https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v5.3.0/build/ol.js" integrity="sha384-iQkGyyH4ioz3m+maM3s9MX1Oq67mACa4B9Z3ovUv3Sv37LJ96fx3WnZfLoiC3Wfl" crossorigin="anonymous"></script>
<script tyle="text/javascript" src="lang_pl.js?v6" id="lang_script"></script>
<script tyle="text/javascript" src="common.js?v6"></script>
<script tyle="text/javascript" src="map.js?v16"></script>
<script tyle="text/javascript" src="common.js?v7"></script>
<script tyle="text/javascript" src="map.js?v17"></script>
</body>
</html>
map.js
@@ -1,7 +1,7 @@
"use strict";
var ttss_refresh = 10000; // 10 seconds
var ttss_position_type = 'CORRECTED';
var ttss_position_type = 'RAW';
var geolocation = null;
var geolocation_set = 0;
@@ -11,17 +11,11 @@
var geolocation_source = null;
var geolocation_layer = null;
var trams_xhr = null;
var trams_timer = null;
var trams_last_update = 0;
var trams_source = null;
var trams_layer = null;
var buses_xhr = null;
var buses_timer = null;
var buses_last_update = 0;
var buses_source = null;
var buses_layer = null;
var vehicles_xhr = {};
var vehicles_timer = {};
var vehicles_last_update = {};
var vehicles_source = {};
var vehicles_layer = {};
var vehicles_info = {};
@@ -217,10 +211,10 @@
    }));
}
function markStops(stops, type, routeStyle) {
function markStops(stops, ttss_type, routeStyle) {
    stop_selected_source.clear();
    
    var style = stops_layer['s'+type].getStyle().clone();
    var style = stops_layer['s' + ttss_type].getStyle().clone();
    
    if(routeStyle) {
        style.getImage().setRadius(5);
@@ -253,29 +247,29 @@
function unstyleSelectedFeatures() {
    stop_selected_source.clear();
    route_source.clear();
    if(feature_clicked && (feature_clicked.getId().startsWith('t') || feature_clicked.getId().startsWith('b'))) {
    if(feature_clicked && ttss_types.indexOf(feature_clicked.getId().substr(0, 1)) >= 0) {
        styleVehicle(feature_clicked);
    }
}
function updateTrams() {
    if(trams_timer) clearTimeout(trams_timer);
    if(trams_xhr) trams_xhr.abort();
    trams_xhr = $.get(
        ttss_trams_base + '/geoserviceDispatcher/services/vehicleinfo/vehicles'
function updateVehicles(prefix) {
    if(vehicles_timer[prefix]) clearTimeout(vehicles_timer[prefix]);
    if(vehicles_xhr[prefix]) vehicles_xhr[prefix].abort();
    vehicles_xhr[prefix] = $.get(
        ttss_urls[prefix] + '/geoserviceDispatcher/services/vehicleinfo/vehicles'
            + '?positionType=' + ttss_position_type
            + '&colorType=ROUTE_BASED'
            + '&lastUpdate=' + encodeURIComponent(trams_last_update)
            + '&lastUpdate=' + encodeURIComponent(vehicles_last_update[prefix])
    ).done(function(data) {
        trams_last_update = data.lastUpdate;
        vehicles_last_update[prefix] = data.lastUpdate;
        
        for(var i = 0; i < data.vehicles.length; i++) {
            var vehicle = data.vehicles[i];
            
            var vehicle_feature = trams_source.getFeatureById('t' + vehicle.id);
            if(vehicle.isDeleted) {
            var vehicle_feature = vehicles_source[prefix].getFeatureById(prefix + vehicle.id);
            if(vehicle.isDeleted || !vehicle.latitude || !vehicle.longitude) {
                if(vehicle_feature) {
                    trams_source.removeFeature(vehicle_feature);
                    vehicles_source[prefix].removeFeature(vehicle_feature);
                    if(feature_clicked && feature_clicked.getId() === vehicle_feature.getId()) {
                        featureClicked();
                    }
@@ -291,14 +285,14 @@
            }
            
            vehicle.geometry = getGeometry(vehicle);
            vehicle.vehicle_type = parseVehicle('t' + vehicle.id);
            vehicle.vehicle_type = parseVehicle(prefix + vehicle.id);
            
            if(!vehicle_feature) {
                vehicle_feature = new ol.Feature(vehicle);
                vehicle_feature.setId('t' + vehicle.id);
                vehicle_feature.setId(prefix + vehicle.id);
                
                styleVehicle(vehicle_feature);
                trams_source.addFeature(vehicle_feature);
                vehicles_source[prefix].addFeature(vehicle_feature);
            } else {
                vehicle_feature.setProperties(vehicle);
                vehicle_feature.getStyle().getImage().setRotation(Math.PI * parseFloat(vehicle.heading ? vehicle.heading : 0) / 180.0);
@@ -306,68 +300,12 @@
            }
        }
        
        trams_timer = setTimeout(function() {
            updateTrams();
        vehicles_timer[prefix] = setTimeout(function() {
            updateVehicles(prefix);
        }, ttss_refresh);
    }).fail(fail_ajax);
    
    return trams_xhr;
}
function updateBuses() {
    if(buses_timer) clearTimeout(buses_timer);
    if(buses_xhr) buses_xhr.abort();
    buses_xhr = $.get(
        ttss_buses_base + '/geoserviceDispatcher/services/vehicleinfo/vehicles'
            + '?positionType=RAW'
            + '&colorType=ROUTE_BASED'
            + '&lastUpdate=' + encodeURIComponent(buses_last_update)
    ).done(function(data) {
        buses_last_update = data.lastUpdate;
        for(var i = 0; i < data.vehicles.length; i++) {
            var vehicle = data.vehicles[i];
            var vehicle_feature = buses_source.getFeatureById('b' + vehicle.id);
            if(vehicle.isDeleted || !vehicle.latitude || !vehicle.longitude) {
                if(vehicle_feature) {
                    buses_source.removeFeature(vehicle_feature);
                    if(feature_clicked && feature_clicked.getId() === vehicle_feature.getId()) {
                        featureClicked();
                    }
                }
                continue;
            }
            var vehicle_name_space = vehicle.name.indexOf(' ');
            vehicle.line = vehicle.name.substr(0, vehicle_name_space);
            vehicle.direction = vehicle.name.substr(vehicle_name_space+1);
            if(special_directions[vehicle.direction]) {
                vehicle.line = special_directions[vehicle.direction];
            }
            vehicle.geometry = getGeometry(vehicle);
            vehicle.vehicle_type = parseVehicle('b' + vehicle.id);
            if(!vehicle_feature) {
                vehicle_feature = new ol.Feature(vehicle);
                vehicle_feature.setId('b' + vehicle.id);
                styleVehicle(vehicle_feature);
                buses_source.addFeature(vehicle_feature);
            } else {
                vehicle_feature.setProperties(vehicle);
                vehicle_feature.getStyle().getImage().setRotation(Math.PI * parseFloat(vehicle.heading) / 180.0);
            }
        }
        buses_timer = setTimeout(function() {
            updateBuses();
        }, ttss_refresh);
    }).fail(fail_ajax);
    return buses_xhr;
    return vehicles_xhr[prefix];
}
function updateStopSource(stops, prefix) {
@@ -394,27 +332,19 @@
    }
}
function updateStops(base, suffix) {
function updateStops(stop_type, ttss_type) {
    var methods = {
        's': 'stops',
        'p': 'stopPoints',
    };
    return $.get(
        base + '/geoserviceDispatcher/services/stopinfo/stops'
        ttss_urls[ttss_type] + '/geoserviceDispatcher/services/stopinfo/' + methods[stop_type]
            + '?left=-648000000'
            + '&bottom=-324000000'
            + '&right=648000000'
            + '&top=324000000'
    ).done(function(data) {
        updateStopSource(data.stops, 's' + suffix);
    }).fail(fail_ajax);
}
function updateStopPoints(base, suffix) {
    return $.get(
        base + '/geoserviceDispatcher/services/stopinfo/stopPoints'
            + '?left=-648000000'
            + '&bottom=-324000000'
            + '&right=648000000'
            + '&top=324000000'
    ).done(function(data) {
        updateStopSource(data.stopPoints, 'p' + suffix);
        updateStopSource(data[methods[stop_type]], stop_type + ttss_type);
    }).fail(fail_ajax);
}
@@ -422,16 +352,11 @@
    if(path_xhr) path_xhr.abort();
    
    var featureId = feature.getId();
    var vehicleId = featureId.substr(1);
    var url = ttss_trams_base;
    if(featureId.startsWith('b')) {
        url = ttss_buses_base;
    }
    var ttss_type = featureId.substr(0, 1);
    
    path_xhr = $.get(
        url + '/geoserviceDispatcher/services/pathinfo/vehicle'
            + '?id=' + encodeURIComponent(vehicleId)
        ttss_urls[ttss_type] + '/geoserviceDispatcher/services/pathinfo/vehicle'
            + '?id=' + encodeURIComponent(featureId.substr(1))
    ).done(function(data) {
        if(!data || !data.paths || !data.paths[0] || !data.paths[0].wayPoints) return;
        
@@ -457,14 +382,10 @@
    if(feature_timer) clearTimeout(feature_timer);
    
    var featureId = feature.getId();
    var url = ttss_trams_base;
    if(featureId.startsWith('b')) {
        url = ttss_buses_base;
    }
    var ttss_type = featureId.substr(0, 1);
    
    feature_xhr = $.get(
        url + '/services/tripInfo/tripPassages'
        ttss_urls[ttss_type] + '/services/tripInfo/tripPassages'
            + '?tripId=' + encodeURIComponent(feature.get('tripId'))
            + '&mode=departure'
    ).done(function(data) {
@@ -490,7 +411,7 @@
            addCellWithText(tr, data.actual[i].actualTime || data.actual[i].plannedTime);
            addCellWithText(tr, data.actual[i].stop_seq_num + '. ' + data.actual[i].stop.name);
            
            stopsToMark.push('s' + featureId.substr(0,1) + data.actual[i].stop.id);
            stopsToMark.push('s' + ttss_type + data.actual[i].stop.id);
            
            if(data.actual[i].status == 'STOPPING') {
                tr.className = 'success';
@@ -498,7 +419,7 @@
            table.appendChild(tr);
        }
        
        markStops(stopsToMark, featureId.substr(0,1), true);
        markStops(stopsToMark, ttss_type, true);
        
        feature_timer = setTimeout(function() { vehicleTable(feature, table); }, ttss_refresh);
    }).fail(fail_ajax_popup);
@@ -508,13 +429,10 @@
    if(feature_xhr) feature_xhr.abort();
    if(feature_timer) clearTimeout(feature_timer);
    
    var url = ttss_trams_base;
    if(featureId.substr(1,1) == 'b') {
        url = ttss_buses_base;
    }
    var ttss_type = featureId.substr(1, 1);
    
    feature_xhr = $.get(
        url + '/services/passageInfo/stopPassages/' + stopType
        ttss_urls[ttss_type] + '/services/passageInfo/stopPassages/' + stopType
            + '?' + stopType + '=' + encodeURIComponent(stopId)
            + '&mode=departure'
    ).done(function(data) {
@@ -576,7 +494,7 @@
    
    var div = document.createElement('div');
    
    var type;
    var typeName;
    var name = feature.get('name');
    var additional;
    var table = document.createElement('table');
@@ -587,43 +505,47 @@
    
    var tabular_data = true;
    
    switch(feature.getId().substr(0, 1)) {
        case 'l':
            tabular_data = false;
            type = '';
            name = lang.type_location;
        break;
        case 't':
        case 'b':
            type = lang.type_tram;
            if(feature.getId().startsWith('b')) {
                type = lang.type_bus;
            }
            var span = displayVehicle(feature.get('vehicle_type'));
            additional = document.createElement('p');
            if(span.title) {
                setText(additional, span.title);
            } else {
                setText(additional, feature.getId());
            }
            additional.insertBefore(span, additional.firstChild);
            addElementWithText(thead, 'th', lang.header_time);
            addElementWithText(thead, 'th', lang.header_stop);
            vehicleTable(feature, tbody);
            vehiclePath(feature);
            styleVehicle(feature, true);
        break;
        case 's':
            type = lang.type_stop_tram;
    var type = feature.getId().substr(0, 1);
    // Location
    if(type == 'l') {
        tabular_data = false;
        typeName = '';
        name = lang.type_location;
    }
    // Vehicle
    else if(ttss_types.indexOf(type) >= 0) {
        typeName = lang.type_bus;
        if(type == 't') {
            typeName = lang.type_tram;
        }
        var span = displayVehicle(feature.get('vehicle_type'));
        additional = document.createElement('p');
        if(span.title) {
            setText(additional, span.title);
        } else {
            setText(additional, feature.getId());
        }
        additional.insertBefore(span, additional.firstChild);
        addElementWithText(thead, 'th', lang.header_time);
        addElementWithText(thead, 'th', lang.header_stop);
        vehicleTable(feature, tbody);
        vehiclePath(feature);
        styleVehicle(feature, true);
    }
    // Stop or stop point
    else if(['s', 'p'].indexOf(type) >= 0) {
        if(type == 's') {
            typeName = lang.type_stop_tram;
            var second_type = lang.departures_for_buses;
            var mapping = stops_mapping['sb'];
            if(feature.getId().startsWith('sb')) {
                type = lang.type_stop_bus;
                typeName = lang.type_stop_bus;
                second_type = lang.departures_for_trams;
                mapping = stops_mapping['st'];
            }
@@ -638,19 +560,11 @@
                    }
                );
            }
        } else {
            typeName = lang.type_stoppoint_tram;
            
            addElementWithText(thead, 'th', lang.header_line);
            addElementWithText(thead, 'th', lang.header_direction);
            addElementWithText(thead, 'th', lang.header_time);
            addElementWithText(thead, 'th', lang.header_delay);
            stopTable('stop', feature.get('shortName'), tbody, feature.getId());
            markStops([feature], feature.getId().substr(1,1));
        break;
        case 'p':
            type = lang.type_stoppoint_tram;
            if(feature.getId().startsWith('pb')) {
                type = lang.type_stoppoint_bus;
                typeName = lang.type_stoppoint_bus;
            }
            
            additional = document.createElement('p');
@@ -662,22 +576,25 @@
                    featureClicked(mapping[feature.get('shortName')]);
                }
            );
            addElementWithText(thead, 'th', lang.header_line);
            addElementWithText(thead, 'th', lang.header_direction);
            addElementWithText(thead, 'th', lang.header_time);
            addElementWithText(thead, 'th', lang.header_delay);
            stopTable('stopPoint', feature.get('stopPoint'), tbody, feature.getId());
            markStops([feature], feature.getId().substr(1,1));
        break;
        }
        addElementWithText(thead, 'th', lang.header_line);
        addElementWithText(thead, 'th', lang.header_direction);
        addElementWithText(thead, 'th', lang.header_time);
        addElementWithText(thead, 'th', lang.header_delay);
        stopTable('stop', feature.get('shortName'), tbody, feature.getId());
        markStops([feature], feature.getId().substr(1,1));
    } else {
        panel.close();
        return;
    }
    
    var loader = addElementWithText(tbody, 'td', lang.loading);
    loader.className = 'active';
    loader.colSpan = thead.childNodes.length;
    
    addParaWithText(div, type).className = 'type';
    addParaWithText(div, typeName).className = 'type';
    addParaWithText(div, name).className = 'name';
    
    if(additional) {
@@ -737,37 +654,34 @@
                featureClicked(feature);
            }}(feature));
            
            var type = '';
            switch(feature.getId().substr(0, 1)) {
                case 'l':
                    type = '';
                    name = lang.type_location;
                break;
                case 't':
                case 'b':
                    type = lang.type_tram;
                    if(feature.getId().startsWith('b')) {
                        type = lang.type_bus;
                    }
                    if(feature.get('vehicle_type').num) {
                        type += ' ' + feature.get('vehicle_type').num;
                    }
                break;
                case 's':
                    type = lang.type_stop_tram;
                    if(feature.getId().startsWith('sb')) {
                        type = lang.type_stop_bus;
                    }
                break;
                case 'p':
                    type = lang.type_stoppoint_tram;
                    if(feature.getId().startsWith('pb')) {
                        type = lang.type_stoppoint_bus;
                    }
                break;
            var type = feature.getId().substr(0, 1);
            var typeName = '';
            if(type == 'l') {
                typeName = '';
                name = lang.type_location;
            } else if(ttss_types.indexOf(type) >= 0) {
                typeName = lang.type_bus;
                if(type == 't') {
                    typeName = lang.type_tram;
                }
                if(feature.get('vehicle_type').num) {
                    typeName += ' ' + feature.get('vehicle_type').num;
                }
            } else if(type == 's') {
                typeName = lang.type_stop_tram;
                if(feature.getId().startsWith('sb')) {
                    typeName = lang.type_stop_bus;
                }
            } else if (type == 'p') {
                typeName = lang.type_stoppoint_tram;
                if(feature.getId().startsWith('pb')) {
                    typeName = lang.type_stoppoint_bus;
                }
            } else {
                continue;
            }
            
            addElementWithText(a, 'span', type).className = 'small';
            addElementWithText(a, 'span', typeName).className = 'small';
            a.appendChild(document.createTextNode(' '));
            addElementWithText(a, 'span', feature.get('name'));
            
@@ -786,12 +700,11 @@
                feature = returnClosest(point, feature, stops_source[type].getClosestFeatureToCoordinate(point));
            }
        });
        if(trams_layer.getVisible()) {
            feature = returnClosest(point, feature, trams_source.getClosestFeatureToCoordinate(point));
        }
        if(buses_layer.getVisible()) {
            feature = returnClosest(point, feature, buses_source.getClosestFeatureToCoordinate(point));
        }
        ttss_types.forEach(function(type) {
            if(vehicles_layer[type].getVisible()) {
                feature = returnClosest(point, feature, vehicles_source[type].getClosestFeatureToCoordinate(point));
            }
        });
        
        if(getDistance(point, feature) > map.getView().getResolution() * 20) {
            feature = null;
@@ -850,16 +763,10 @@
        stopId = window.location.hash.substr(2,1) + 't' + window.location.hash.substr(3);
    } else if(window.location.hash.match(/^#![sp][tb]-?[0-9]+$/)) {
        stopId = window.location.hash.substr(2);
    } else if(window.location.hash == '#!RAW') {
        ttss_position_type = 'RAW';
    }
    
    if(vehicleId) {
        if(vehicleId.startsWith('b')) {
            feature = buses_source.getFeatureById(vehicleId);
        } else {
            feature = trams_source.getFeatureById(vehicleId);
        }
        feature = vehicles_source[vehicleId.substr(0, 1)].getFeatureById(vehicleId);
    } else if(stopId) {
        feature = stops_source[stopId.substr(0,2)].getFeatureById(stopId);
    }
@@ -900,6 +807,16 @@
    
    panel = new Panel(document.getElementById('panel'));
    
    route_source = new ol.source.Vector({
        features: [],
    });
    route_layer = new ol.layer.Vector({
        source: route_source,
        style: new ol.style.Style({
            stroke: new ol.style.Stroke({ color: [255, 153, 0, .8], width: 5 })
        }),
    });
    stops_type.forEach(function(type) {
        stops_source[type] = new ol.source.Vector({
            features: [],
@@ -920,28 +837,14 @@
        visible: false,
    });
    
    trams_source = new ol.source.Vector({
        features: [],
    });
    trams_layer = new ol.layer.Vector({
        source: trams_source,
    });
    buses_source = new ol.source.Vector({
        features: [],
    });
    buses_layer = new ol.layer.Vector({
        source: buses_source,
    });
    route_source = new ol.source.Vector({
        features: [],
    });
    route_layer = new ol.layer.Vector({
        source: route_source,
        style: new ol.style.Style({
            stroke: new ol.style.Stroke({ color: [255, 153, 0, .8], width: 5 })
        }),
    ttss_types.forEach(function(type) {
        vehicles_source[type] = new ol.source.Vector({
            features: [],
        });
        vehicles_layer[type] = new ol.layer.Vector({
            source: vehicles_source[type],
        });
        vehicles_last_update[type] = 0;
    });
    
    ol.style.IconImageCache.shared.setSize(512);
@@ -995,22 +898,23 @@
    });
    geolocation_button.addEventListener('click', trackingToggle);
    
    var layers = [
        new ol.layer.Tile({
            source: new ol.source.OSM(),
        }),
        route_layer,
        geolocation_layer,
    ];
    stops_type.forEach(function(type) {
        layers.push(stops_layer[type]);
    });
    layers.push(stop_selected_layer);
    ttss_types.forEach(function(type) {
        layers.push(vehicles_layer[type]);
    });
    map = new ol.Map({
        target: 'map',
        layers: [
            new ol.layer.Tile({
                source: new ol.source.OSM(),
            }),
            route_layer,
            geolocation_layer,
            stops_layer['st'],
            stops_layer['sb'],
            stops_layer['pt'],
            stops_layer['pb'],
            stop_selected_layer,
            buses_layer,
            trams_layer,
        ],
        layers: layers,
        view: new ol.View({
            center: ol.proj.fromLonLat([19.94, 50.06]),
            zoom: 14,
@@ -1060,17 +964,16 @@
    map.getView().on('change:resolution', change_resolution);
    change_resolution();
    
    $.when(
    var future_requests = [
        updateVehicleInfo(),
        updateTrams(),
        updateBuses(),
        updateStops(ttss_trams_base, 't'),
        updateStops(ttss_buses_base, 'b'),
        updateStopPoints(ttss_trams_base, 't'),
        updateStopPoints(ttss_buses_base, 'b'),
    ).done(function() {
        hash();
    ];
    ttss_types.forEach(function(type) {
        future_requests.push(updateVehicles(type));
    });
    stops_type.forEach(function(type) {
        future_requests.push(updateStops(type.substr(0,1), type.substr(1,1)));
    });
    $.when(future_requests).done(hash);
    
    window.addEventListener('hashchange', hash);