在ol-ext的弹出功能中添加图片(OpenLayers)

var popup = new ol.Overlay({
    element: document.getElementById('popup'),
    autoPan: true,
    autoPanAnimation: {
        duration: 250
    }
});
map.addOverlay(popup);

var img = document.createElement('img');
img.src = 'path_to_your_image.jpg'; // 替换为你的图片路径
document.getElementById('popup').appendChild(img);

layer.on('click', function(event) {
    var coordinate = event.coordinate;
    popup.setPosition(coordinate);
    img.src = 'path_to_your_image.jpg'; // 替换为对应图层的图片路径
    popup.setOffset([0, -30]); // 设置弹出框的偏移量
});