未捕获RangeError:Chrome版本36.0.1985.5 dev -m中的数组长度无效

Question

我有一个谷歌地图API设置在这里,只有谷歌Chrome将抛出'未捕获的RangeError:无效的数组长度'.

这是有问题的代码:

var map;
var phoenix = new google.maps.LatLng(33.551946,-112.109985);
var locOne = new google.maps.LatLng(33.541061,-112.293369);
var locTwo = new google.maps.LatLng(33.37738,-111.833271);
var locThree = new google.maps.LatLng(33.454742,-112.099701);
var locFour =  new google.maps.LatLng(33.673617,-112.020856);

function HomeControl (controlDiv, map){
    // create div to hold the controls
    var controlDiv = document.createElement('div');
    controlDiv.class = 'gmnoprint';
    controlDiv.style.marginTop = '5px';
    controlDiv.index = 1;
    // set CSS for the control border
    var controlUI = document.createElement('div');
    controlUI.id = 'border';
    controlUI.style.backgroundColor = '#fff';
    controlUI.style.cursor = 'pointer';
    controlUI.textAlign = 'center';
    controlUI.title = 'Click to reset the map';
    controlDiv.appendChild(controlUI);
    // set CSS for control interior
    var controlText = document.createElement('div');
    controlText.id = 'reset';
    controlText.style.fontFamily = 'Arial,sans-serif';
    controlText.style.fontSize = '13px';
    controlText.innerHTML = '<b>Reset Map</b>';
    controlUI.appendChild(controlText);


    // create div to hold the controls for the locations
    var controlLocDiv = document.createElement('div');
    controlLocDiv.class = 'gmnoprint';
    controlLocDiv.style.marginTop = '5px';
    controlLocDiv.style.marginRight = '5px';
    controlLocDiv.index = 1;
    // set CSS for the control border
    var controlWestUI = document.createElement('div');
    controlWestUI.id = 'border';
    controlWestUI.style.backgroundColor = '#fff';
    controlWestUI.style.cursor = 'pointer';
    controlWestUI.textAlign = 'center';
    controlWestUI.title = 'Click to set the map to West Valley';
    controlLocDiv.appendChild(controlWestUI);
    // set CSS for control interior
    var controlWestText = document.createElement('div');
    controlWestText.id = 'West';
    controlWestText.style.fontFamily = 'Arial,sans-serif';
    controlWestText.style.fontSize = '13px';
    controlWestText.style.paddingRight = '5px';
    controlWestText.style.paddingLeft = '5px';
    controlWestText.innerHTML = '<div>West Valley</div>';
    controlWestUI.appendChild(controlWestText);

    // set CSS for the control border
    var controlEastUI = document.createElement('div');
    controlEastUI.id = 'border';
    controlEastUI.style.backgroundColor = '#fff';
    controlEastUI.style.cursor = 'pointer';
    controlEastUI.textAlign = 'center';
    controlEastUI.title = 'Click to set the map to East Valley';
    controlLocDiv.appendChild(controlEastUI);
    // set CSS for control interior
    var controlEastText = document.createElement('div');
    controlEastText.id = 'East';
    controlEastText.style.fontFamily = 'Arial,sans-serif';
    controlEastText.style.fontSize = '13px';
    controlEastText.style.paddingRight = '5px';
    controlEastText.style.paddingLeft = '5px';
    controlEastText.innerHTML = '<div>East Valley</div>';
    controlEastUI.appendChild(controlEastText);

    // set CSS for the control border
    var controlDowntownUI = document.createElement('div');
    controlDowntownUI.id = 'border';
    controlDowntownUI.style.backgroundColor = '#fff';
    controlDowntownUI.style.cursor = 'pointer';
    controlDowntownUI.textAlign = 'center';
    controlDowntownUI.title = 'Click to set the map to Downtown Phoenix';
    controlLocDiv.appendChild(controlDowntownUI);
    // set CSS for control interior
    var controlDowntownText = document.createElement('div');
    controlDowntownText.id = 'Downtown';
    controlDowntownText.style.fontFamily = 'Arial,sans-serif';
    controlDowntownText.style.fontSize = '13px';
    controlDowntownText.style.paddingRight = '5px';
    controlDowntownText.style.paddingLeft = '5px';
    controlDowntownText.innerHTML = '<div>Downtown Phoenix</div>';
    controlDowntownUI.appendChild(controlDowntownText);

    // set CSS for the control border
    var controlNorthUI = document.createElement('div');
    controlNorthUI.id = 'border';
    controlNorthUI.style.backgroundColor = '#fff';
    controlNorthUI.style.cursor = 'pointer';
    controlNorthUI.textAlign = 'center';
    controlNorthUI.title = 'Click to set the map to North Phoenix';
    controlLocDiv.appendChild(controlNorthUI);
    // set CSS for control interior
    var controlNorthText = document.createElement('div');
    controlNorthText.id = 'North';
    controlNorthText.style.fontFamily = 'Arial,sans-serif';
    controlNorthText.style.fontSize = '13px';
    controlNorthText.style.paddingRight = '5px';
    controlNorthText.style.paddingLeft = '5px';
    controlNorthText.innerHTML = '<div>North Phoenix</div>';
    controlNorthUI.appendChild(controlNorthText);

    // Setup click event listeners: click to reset map
    google.maps.event.addDomListener(controlUI, 'click', function() {
      map.setCenter(phoenix);
      map.setZoom(10);
    });
    map.controls[google.maps.ControlPosition.TOP_RIGHT].push(controlDiv);
    map.controls[google.maps.ControlPosition.RIGHT].push(controlLocDiv);
    //setup click event listeners: click to set position to West Phoenix
    google.maps.event.addDomListener(controlWestUI, 'click', function() {
      map.panTo(locOne);
      map.setZoom(14);
    });
    //setup click event listeners: click to set position to East Phoenix
    google.maps.event.addDomListener(controlEastUI, 'click', function() {
      map.panTo(locTwo);
      map.setZoom(14);
    });
    //setup click event listeners: click to set position to Downtown Phoenix
    google.maps.event.addDomListener(controlDowntownUI, 'click', function() {
      map.panTo(locThree);
      map.setZoom(14);
    });
    //setup click event listeners: click to set position to North Phoenix
    google.maps.event.addDomListener(controlNorthUI, 'click', function() {
      map.panTo(locFour);
      map.setZoom(14);
    });
}

function initialize() {
    var mapDiv = document.getElementById('map_canvas1');
    var myLatLng1 = new google.maps.LatLng(33.523103,-112.042593);
    var map_options1 = {center: myLatLng1,zoom: 10,scrollwheel: false,zoomControl: true,zoomControlOptions: {style: google.maps.ZoomControlStyle.LARGE},mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR,position: google.maps.ControlPosition.TOP_RIGHT},mapTypeId: google.maps.MapTypeId.ROADMAP};
    map = new google.maps.Map(mapDiv, map_options1);        
    setMarkers(map, locations);

    //Create DIV to hold control
    //Call the HomeControl() constructor passing
    //in this DIV.
    var homeControlDiv = document.createElement('div');
    var homeControl = new HomeControl(homeControlDiv, map);

    homeControlDiv.index = 1;
    map.controls[google.maps.ControlPosition.TOP_RIGHT].push(homeControlDiv);
}
var locations = [['West Valley', 33.541061,-112.293369],['East Valley', 33.37738,-111.833271],['Downtown Phoenix', 33.454742,-112.099701],['North Phoenix', 33.673617,-112.020856]];

function setMarkers(map, locations){
    var icon = {
        url: 'http://www.bpisite.com/ico/bpi2.png',
        size: new google.maps.Size(52, 36),
        origin: myLatLng,
        anchor: myLatLng
    };
    var shadow = {
        url: 'http://www.bpisite.com/ico/bpi2_shadow.png',
        size: new google.maps.Size(72, 36),
        origin: myLatLng,
        anchor: myLatLng
    };
    for (var i in locations) {
        var loc = locations[i];
        var myLatLng = new google.maps.LatLng(loc[1], loc[2]);
        var marker = new google.maps.Marker({
            position: myLatLng,
            map: map,
            icon: icon,
            shadow: shadow,
            title: loc[0],
            zIndex: loc[3]
        });
        marker.setMap(map);
        attachListener(marker, 'marker:'+1);
    }
    function attachListener(marker){
    google.maps.event.addDomListener(marker, 'click', function() {
            window.setTimeout(function() {
            map.panTo(marker.getPosition());
            }, 500);
            window.setTimeout(function() {
            map.setZoom(16);
            }, 1000);
    });
    }
}
google.maps.event.addDomListener(window, 'load', initialize);

它似乎加载了我设置的图标和自定义按钮以外的所有内容.通过双击,地图将像普通,可拖动和滚动一样工作,但整个UI都是隐藏的.

这段代码在早期版本的Chrome中运行得很好,但无论出于何种原因,这个新的更新都搞砸了代码.

Answer 1

问题不在于您的代码.这是google maps api/chrome中的一个错误.

这是问题所在:如果您尝试使用整数定义数组,则不会出现问题

var arr = Array(50);

但是,如果使用float定义数组,则会出现此错误

var arr = Array(50.5); // => Uncaught RangeError: Invalid array length

这是因为chrome开始计算width并且height作为整数的float instad,因此,在它们在一个数组中使用它之后才会抛出异常.在这里查看更多解释

大多数情况下,您使用百分比来表示容器的宽度/高度,例如

map_canvas1{
  width: 100%;
  height: 80%;
}

现在,尝试使用像素

map_canvas1{
  width: 500px;
  height: 300px;
}

看看它是否有效