Javascript 谷歌地图国家鼠标点击(FusionTables)
这段代码在国家上绘制多边形,当我的光标指向一个国家时,多边形的颜色正在改变,但我在eventlistener中遇到问题,当我单击一个国家时,总是提醒姓氏我的错误是什么thaks寻求帮助Javascript 谷歌地图国家鼠标点击(FusionTables),javascript,google-maps,google-fusion-tables,Javascript,Google Maps,Google Fusion Tables,这段代码在国家上绘制多边形,当我的光标指向一个国家时,多边形的颜色正在改变,但我在eventlistener中遇到问题,当我单击一个国家时,总是提醒姓氏我的错误是什么thaks寻求帮助 <script type="text/javascript" src="https://maps.google.com/maps/api/js?sensor=false"></script> <script type="text/javascript"> va
<script type="text/javascript"
src="https://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var colors = ['#FF0000', '#00FF00', '#0000FF', '#FFFF00'];
var map;
function initialize() {
var myOptions = {
zoom: 2,
center: new google.maps.LatLng(10, 0),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map-canvas'),
myOptions);
// Initialize JSONP request
var script = document.createElement('script');
var url = ['https://www.googleapis.com/fusiontables/v1/query?'];
url.push('sql=');
var query = 'SELECT name, kml_4326 FROM ' +
'1foc3xO9DyfSIF6ofvN0kp2bxSfSeKog5FbdWdQ';
var encodedQuery = encodeURIComponent(query);
url.push(encodedQuery);
url.push('&callback=drawMap');
url.push('&key=AIzaSyAm9yWCV7JPCTHCJut8whOjARd7pwROFDQ');
script.src = url.join('');
var body = document.getElementsByTagName('body')[0];
body.appendChild(script);
}
function drawMap(data) {
var rows = data['rows'];
var country= new Array();
for (var i in rows) {
if (rows[i][0] != 'Antarctica') {
var newCoordinates = [];
var geometries = rows[i][1]['geometries'];
if (geometries) {
for (var j in geometries) {
newCoordinates.push(constructNewCoordinates(geometries[j]));
}
} else {
newCoordinates = constructNewCoordinates(rows[i][1]['geometry']);
}
var randomnumber = Math.floor(Math.random() * 4);
country[i] = new google.maps.Polygon({
paths: newCoordinates,
strokeColor: colors[0],
strokeOpacity: 0,
strokeWeight: 1,
fillColor: colors[0],
fillOpacity: 0
});
google.maps.event.addListener(country[i], 'mouseover', function () {
this.setOptions({ fillOpacity: 0.2 });
});
google.maps.event.addListener(country[i], 'mouseout', function () {
this.setOptions({ fillOpacity: 0 });
});
google.maps.event.addListener(country[i], "click", function (event) {
alert(rows[i][0]);
});
country[i].setMap(map);
}
}
}
function constructNewCoordinates(polygon) {
var newCoordinates = [];
var coordinates = polygon['coordinates'][0];
for (var i in coordinates) {
newCoordinates.push(
new google.maps.LatLng(coordinates[i][1], coordinates[i][0]));
}
return newCoordinates;
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
您的单击侦听器总是向相同的数据发出警报:
google.maps.event.addListener(country[i], "click", function (event) {
alert(rows[i][0]);
});
行[i][0]将始终是相同的值,因为当循环退出时,我将始终引用最后一个值
修复它的一种方法是使用、创建一个函数:
createPolygonClidkHandler(polygon, text) {
google.maps.event.addListener(polygon, "click", function (event) {
alert(text);
});
然后使用该函数保持多边形及其关联文本的闭合,如下所示:
function drawMap(data) {
var rows = data['rows'];
var country= new Array();
for (var i in rows) {
if (rows[i][0] != 'Antarctica') {
var newCoordinates = [];
var geometries = rows[i][1]['geometries'];
if (geometries) {
for (var j in geometries) {
newCoordinates.push(constructNewCoordinates(geometries[j]));
}
} else {
newCoordinates = constructNewCoordinates(rows[i][1]['geometry']);
}
var randomnumber = Math.floor(Math.random() * 4);
country[i] = new google.maps.Polygon({
paths: newCoordinates,
strokeColor: colors[0],
strokeOpacity: 0,
strokeWeight: 1,
fillColor: colors[0],
fillOpacity: 0
});
google.maps.event.addListener(country[i], 'mouseover', function () {
this.setOptions({ fillOpacity: 0.2 });
});
google.maps.event.addListener(country[i], 'mouseout', function () {
this.setOptions({ fillOpacity: 0 });
});
createPolygonClidkHandler(country[i], rows[i][0]);
country[i].setMap(map);
}
}
}
可能的副本。您的单击侦听器始终会发出相同值的警报。您应该使用鼠标盖或函数闭包执行相同的操作。抱歉,可能重复我粘贴了错误的代码,通常是alertrows[i][0];我更新了问题,但没有改变答案。我将指向数组中的最后一个条目。这就是发生的情况:但我不明白为什么我要修复它,我需要在单击时提醒每个国家的名称