问题
I'm using google map API to design a "earthquake map". So far, so good.
The map displays nicely in Firefox and Chrome but raises a error in IE8:
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.3) Timestamp: Fri, 3 May 2013 08:13:44 UTC
Message: Unexpected call to method or property access. Line: 9 Char: 238 Code: 0 URI: http://maps.gstatic.com/intl/pt_ALL/mapfiles/api-3/12/10/main.js
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<title>Google Maps Multiple Markers</title>
<script src="http://maps.google.com/maps/api/js?sensor=false"
type="text/javascript"></script>
</head>
<body>
<div id="map" style="width: 400px; height: 650px;"></div>
<script type="text/javascript">
var Parsed = [[]];
var txtFile;
if (window.XMLHttpRequest) { // Mozilla, Safari, ...
txtFile = new XMLHttpRequest();
} else if (window.ActiveXObject) { // IE 8 and older
txtFile = new ActiveXObject("Microsoft.XMLHTTP");
}
txtFile.open("GET", "http://foo/f4/stats/nServsCodigoPostal.csv", true);
txtFile.onreadystatechange = function(){
if (txtFile.readyState === 4){ // Makes sure the document is ready to parse.
if (txtFile.status === 200){ // Makes sure it's found the file.
allText = txtFile.responseText;
Parsed = CSVToArray(allText, ";")
}
}
function CSVToArray( strData, strDelimiter ){
strDelimiter = (strDelimiter || ",");
var objPattern = new RegExp(
(
// Delimiters.
"(\\" + strDelimiter + "|\\r?\\n|\\r|^)" +
// Quoted fields.
"(?:\"([^\"]*(?:\"\"[^\"]*)*)\"|" +
// Standard fields.
"([^\"\\" + strDelimiter + "\\r\\n]*))"
),
"gi"
);
var arrData = [[]];
var arrMatches = null;
while (arrMatches = objPattern.exec( strData )){
var strMatchedDelimiter = arrMatches[ 1 ];
if (
strMatchedDelimiter.length &&
(strMatchedDelimiter != strDelimiter)
){
arrData.push( [] );
}
if (arrMatches[ 2 ]){
var strMatchedValue = arrMatches[ 2 ].replace(
new RegExp( "\"\"", "g" ),
"\""
);
} else {
var strMatchedValue = arrMatches[ 3 ];
}
arrData[ arrData.length - 1 ].push( strMatchedValue );
}
return( arrData );
}
var locations = [
['Viana do Castelo', 41.6872711837914, -8.82476806640625, ],
['Braga', 41.54944320851238, -8.414154052734375, ],
['Porto', 41.15875373498798, -8.610706329345703, ],
['Aveiro', 40.63896734381723,-8.648300170898438, ],
['Vila Real', 41.30050773444147, -7.752227783203125, ],
['Bragança', 41.80535774441799, -6.760368347167969, ],
['Viseu', 40.64730356252251, -7.8936767578125, ],
['Guarda', 40.53258931069557, -7.25921630859375, ],
['Coimbra', 40.20195268954057, -8.433380126953125, ],
['Leiria', 39.7462660621837, -8.81103515625, ],
['Santarém', 39.774769485295465, -8.5693359375, ],
['Castelo Branco', 39.82013946676259, -7.505035400390625, ],
['Portalegre', 39.28860847419942, -7.42950439453125, ],
['Lisboa', 38.72891158257716, -9.139251708984375, ],
['Èvora', 38.56749535882734, -7.9046630859375, ],
['Setúbal', 38.5299046000139, -8.876953125, ],
['Beja', 38.01509916686995, -7.862606048583984, ],
['Faro', 37.017905231730914, -7.922515869140625, ]
];
for (var i = 0; i<Parsed.length; i++){
var a = new String(Parsed[i][0]);
Parsed[i][0] = a.replace(/[^a-z0-9]/gi,'');
for(var j = 0; j<locations.length; j++){
var b = new String(locations[j][0]);
locations[j][0] = b.replace(/[^a-z0-9]/gi,'');
if(Parsed[i][0]==locations[j][0]){
locations[j][3] = ((0.07*Parsed[i][2])+4.875);
}
}
}
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: new google.maps.LatLng(39.50, -8.37),
disableDefaultUI: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var infowindow = new google.maps.InfoWindow();
for( var i = 0; i < locations.length; i++ ) {
addMarker( locations[i] );
}
function addMarker( location ) {
var lat = location[1], lng = location[2],
magnitude = location[3], content = location[0];
var options = {
position: new google.maps.LatLng( lat, lng ),
map: map
};
if( magnitude < 5 ) {
options.animation = google.maps.Animation.BOUNCE;
}
else {
options.icon = getCircle( magnitude );
}
var marker = new google.maps.Marker( options );
google.maps.event.addListener( marker, 'click', function() {
infowindow.setContent( content );
infowindow.open( map, marker );
});
}
function getCircle(magnitude) {
return {
path: google.maps.SymbolPath.CIRCLE,
fillColor: 'red',
fillOpacity: .5,
scale: Math.pow(2, magnitude) / Math.PI,
strokeColor: 'black',
strokeWeight: .5
};
}
};
txtFile.send(null);
</script>
</body>
</html>
My source code is above. Can you help me?
Thanks in advance.
Update1: New Source code but same problem.
Update2: Run Firebug, no problem was found.
回答1:
Try running the code through JSLint
Your main problem is the trailing commas after the last element in each array, e.g.:
['Beja', 38.01509916686995, -7.862606048583984, ],
Do this instead:
['Beja', 38.01509916686995, -7.862606048583984 ],
This will always crash IE. There are some other more minor problems with the code that JSLint will reveal.
回答2:
Not an answer just some info. The problem may not be within your code there is an issue between IE8 and Google apps ( including Maps api). Google ended support for IE8 this past November 15th http://support.google.com/a/bin/answer.py?hl=en&answer=33864
This simple example page from Google will crash IE8, it will load fine, press F5 and IE will crash. https://developers.google.com/maps/documentation/javascript/examples/full/map-simple
Google did push out an update to Maps on April 29th enhancing some features, which caused nightly failures in our lab, due to this issue. I have not found a fix or workaround for it.
Do you need a ; at the end of this: Parsed = CSVToArray(allText, ";") ?
回答3:
The other answers did not work for me. After a dozen of ideas, I ended up with the following working(!) solution:
Before loading the content, destroy the object that the map is attached to.
e.g. if your map is set using:
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
use this code before doing the ajax request:
$('#map-canvas').remove();
来源：https://stackoverflow.com/questions/16354566/unexpected-call-with-google-maps-in-ie8