Question

// Called from viewDidLoad
func setupMap() {
    mapView.delegate = self
    // BusStop implements the MKAnnotation protocol, I have an array of them
    let routeCoordinates = busStops.map({ $0.coordinate })
    let routeLine = MKPolyline(coordinates: routeCoordinates, count: routeCoordinates.count)
    mapView.setVisibleMapRect(routeLine.boundingMapRect, animated: false)
    mapView.add(routeLine)
}

// MARK: MKMapViewDelegate

func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
    if let polyline = overlay as? MKPolyline {
        let polylineRenderer = MKPolylineRenderer(overlay: polyline)
        polylineRenderer.strokeColor = .blue
        polylineRenderer.lineWidth = 3
        return polylineRenderer
    }
    return MKOverlayRenderer(overlay: overlay)
}

我想从这个对象访问classKey和status。如何访问每个键值？我试过这个{ "sachin.company": { "classkey": "dotcompany", "status": "available" }, "sachin.com": { "classkey": "domcno", "status": "regthroughothers" }, "sachin.co.in": { "classkey": "thirdleveldotin", "status": "regthroughothers" }, "sachin.org": { "classkey": "domorg", "status": "regthroughothers" }, "sachin.guru": { "classkey": "dotguru", "status": "available" }, "sachin.sexy": { "classkey": "dotsexy", "status": "available" }, "sachin.nettlds=asia": { "status": "unknown" } }，但这只创建了像var keys = Object.keys(response);

这样的数组

Answer 1

$("#slack-time").click(function(e){
    e.preventDefault();
    chrome.tabs.query({currentWindow: true, active: true}, function (tab) {
              chrome.tabs.update(tab.id, {url: 'http://www.facebook.com'});
        });
})

Answer 2

如果您想获得所有已定义的值
做如下，

var allValues = [];
var keys = Object.keys(parsedJson);
Object.values(parsedJson).forEach(function(x) {
    Object.values(x).forEach(function(y){
       this.allValues.push(y);
    }, this);
}, this);

allValues会给你你想要的东西。
感谢。

如何从这个json访问每个数据的值？

2 个答案: