我试图执行一个警告阵列的功能，但它不起作用。当我按下添加按钮时，我应该有一个包含Lat / lng的警报，但是没有警报出现。
您可以在此处查看我的工作代码：jsfiddle。按“添加”按钮以查看此现象。我在第195行中调用了函数f()，但我没有得到任何内容。
我的HTML代码：
<div id="info"></div>
<div id="dvMap"></div>
<div id="directions_panel" style="margin:20px;background-color:#FFEE77;"></div>
<div id="wrapper">Paste coordinate data here:
<form onSubmit="javascript:return false;">
<textarea id="Coords" cols="50" rows="25"></textarea>
<div>
<input type="button" id="btnAdd" class="Button" value="Add Markers" onClick="ProcessData()">
<input type="button" id="btnClear" class="Button" value="Clear Map" onClick="Clear()">
</div>
<br>
</form>
</div>
我的Javascript代码：
var directionsDisplay = [];
var directionsService = [];
var map = null;
var g = [];
var path = new Array();
var routeSegment = 0;
var k = 0;
function inizialise() {
var mapOptions = {
center: new google.maps.LatLng(33.730166863, 130.7446296584),
zoom: 12,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('dvMap'), mapOptions);
document.getElementById("Coords").value = '33.29702, 130.54948000000002' + '\n' + '33.29764, 130.54986000000002' + '\n' + '33.29793, 130.55010000000001' + '\n' + '33.298730000000006, 130.55066000000002' + '\n' + '33.299620000000004, 130.55129000000002'
// calcRoute() ;
}
var MyArray = [];
function Clear() {
//alert(directionsDisplay.length);
MyArray = [];
for (var i = 0; i < directionsDisplay.length; i++) {
directionsDisplay[i].setMap(null);
}
// directionsDisplay = [];
document.getElementById("Coords").value = "";
document.getElementById("Coords").disabled = false;
document.getElementById("btnAdd").disabled = false;
}
function ProcessData() {
var Points = document.getElementById("Coords").value
if (document.getElementById("Coords").value != '') {
var Points = document.getElementById("Coords").value
calcRoute(Points);
}
}
/*
function ProcessData() {
alert('ok');
if (document.getElementById("Coords").value != '') {
var Points = document.getElementById("Coords").value
AddMarkers(Points);
}
}*/
function AddMarkers(data) {
var MyData = data.substr(0, data.length);
MyArray = MyData.split("\n");
//alert(MyArray[2]);
// calcRoute();
t();
}
function calcRoute(data) {
var MyData = data.substr(0, data.length);
MyArray = MyData.split("\n");
var input_msg = MyArray;
var locations = new Array();
var bounds = new google.maps.LatLngBounds();
for (var i = 0; i < input_msg.length; i++) {
var tmp_lat_lng = input_msg[i].split(",");
//var s = new google.maps.LatLng(tmp_lat_lng[0], tmp_lat_lng[1]);
locations.push(new google.maps.LatLng(tmp_lat_lng[0], tmp_lat_lng[1]));
bounds.extend(locations[locations.length - 1]);
}
/* var mapOptions = {
// center: locations[0],
zoom: 12,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('dvMap'), mapOptions);
*/
map.fitBounds(bounds);
var summaryPanel = document.getElementById("directions_panel");
summaryPanel.innerHTML = "";
var i = locations.length;
var index = 0;
while (i != 0) {
if (i < 3) {
var tmp_locations = new Array();
for (var j = index; j < locations.length; j++) {
tmp_locations.push(locations[j]);
}
drawRouteMap(tmp_locations);
i = 0;
index = locations.length;
}
if (i >= 3 && i <= 10) {
console.log("before :fun < 10: i value " + i + " index value" + index);
var tmp_locations = new Array();
for (var j = index; j < locations.length; j++) {
tmp_locations.push(locations[j]);
}
drawRouteMap(tmp_locations);
i = 0;
index = locations.length;
console.log("after fun < 10: i value " + i + " index value" + index);
}
if (i >= 10) {
console.log("before :fun > 10: i value " + i + " index value" + index);
var tmp_locations = new Array();
for (var j = index; j < index + 10; j++) {
tmp_locations.push(locations[j]);
}
drawRouteMap(tmp_locations);
i = i - 9;
index = index + 9;
console.log("after fun > 10: i value " + i + " index value" + index);
}
}
}
var coord = new Array();
function drawRouteMap(locations) {
var start, end;
var waypts = [];
for (var k = 0; k < locations.length; k++) {
if (k >= 1 && k <= locations.length - 2) {
waypts.push({
location: locations[k],
stopover: true
});
}
if (k == 0) start = locations[k];
if (k == locations.length - 1) end = locations[k];
}
var request = {
origin: start,
destination: end,
waypoints: waypts,
optimizeWaypoints: false,
travelMode: google.maps.TravelMode.DRIVING
};
console.log(request);
directionsService.push(new google.maps.DirectionsService());
var instance = directionsService.length - 1;
directionsDisplay.push(new google.maps.DirectionsRenderer({
preserveViewport: true
}));
directionsDisplay[instance].setMap(map);
directionsService[instance].route(request, function (response, status) {
if (status == google.maps.DirectionsStatus.OK) {
console.log(status);
directionsDisplay[instance].setDirections(response);
var f = response.routes[0];
// var summaryPanel = document.getElementById("directions_panel");
var route = directionsDisplay[instance].getDirections().routes[0];
// var routes = response.routes;
var points = route.overview_path;
//alert(points);
var ul = document.getElementById("directions_panel");
var legs = response.routes[0].legs;
for (i = 0; i < legs.length; i++) {
var steps = legs[i].steps;
for (j = 0; j < steps.length; j++) {
var nextSegment = steps[j].path;
for (k = 0; k < nextSegment.length; k++) {
// alert(nextSegment[k]);
var li = document.createElement('P');
li.innerHTML = getLatLng(nextSegment[k]);
ul.appendChild(li);
// polyline.getPath().push(nextSegment[k]);
//bounds.extend(nextSegment[k]);
coord.push( getLatLng(nextSegment[k]));
f(coord);
}
}
}
} else {
alert("directions response " + status);
}
});
}
function f( r) {
alert(r);
}
function getLatLng(point) {
//alert(MyArray.length);
var lat = point.lat(),
lng = point.lng();
var tmp = MyArray[k].split(",");
// alert( Math.abs(parseFloat(tmp[0]- lat)) )
if (Math.abs(parseFloat(tmp[0] - lat)) < 0.00009 && Math.abs(parseFloat(tmp[1] - lng)) < 0.00009) {
k++;
// alert(k);
//if(k==MyArray.length) { f('animation'); }
return " { \"lat\": " + lat + " ,\"lng\" : " + lng + " ,\"waypoint\" : 1},";
} else {
return " { \"lat\": " + lat + " ,\"lng\" : " + lng + " ,\"waypoint\" : 0},";
}
}
google.maps.event.addDomListener(window, 'load', inizialise);
问题代码在第195行：我致电f(coord)，但警报未显示。我已经定义了f函数：
function f(r) {
alert(r);
}
答案 0 :(得分：1)
您使用第173行中的对象覆盖f：
var f = response.routes[0];
因此，当您尝试呼叫f时，它不是一个函数，而是一个对象（在调用之前尝试记录typeof f：您将获得'对象'）。
答案 1 :(得分：0)
我设法解决了这个问题。我编辑了我的功能＆＃39; getLatLng（）＆＃39;如：
function getLatLng(point, array) {
//alert(k);
var lat = point.lat(),
lng = point.lng();
var tmp = MyArray[k].split(",");
// alert( Math.abs(parseFloat(tmp[0]- lat)) )
if (Math.abs(parseFloat(tmp[0] - lat)) < 0.00009 && Math.abs(parseFloat(tmp[1] - lng)) < 0.00009) {
k++;
array.push({
"lat": lat ,
"lng": lng,
"stop":1
});
return " { \"lat\": " + lat + " ,\"lng\" : " + lng + " ,\"waypoint\" : 1},";
} else {
array.push({
"lat": lat ,
"lng": lng,
"stop":1
});
return " { \"lat\": " + lat + " ,\"lng\" : " + lng + " ,\"waypoint\" : 0},";
}
}
现在我可以访问我的数组元素了。这是我的code