仅在视图中放置Google地图标记

我正在试图为我的Google地图标记设置动画。我设法对地图进行样式设置，设置自定义标记并获得动画效果，但有一些东西阻止它按我想要的方式工作。仅在视图中放置Google地图标记

第一件事是我使用pace.js添加一个加载栏到页面。一旦加载页面，CSS将基于CSS转换的内容淡入视图中。由于此转换的持续时间为0.5秒，因此动画在页面完全加载之前运行。所以基本上我需要一种向地图标记动画添加延迟的方法。

其次，我正在考虑将我的地图放在网站的页脚附近。这意味着没有人会看到动画。我认为这将是很好，如果它只有在地图可见（和页面加载）动画。

有没有办法实现这一目标？

这是我目前的代码：

/* 
* When the window has finished loading create our google map below. 
*/ 

google.maps.event.addDomListener(window, 'load', init); 

/* 
* Basic options for a simple Google Map. For more options see: 
* https://developers.google.com/maps/documentation/javascript/reference#MapOptions 
* 
* 1. How zoomed in you want the map to start at (always required) 
* 2. The latitude and longitude to center the map (always required). 
* 3. How you would like to style the map. This is where you would paste any 
* style found on Snazzy Maps. 
* 4. Prevent map from being draggable. 
* 5. Hide map/satellite toggle. 
* 6. Hide "Street View" button. 
*/ 

function init() { 

    var mapOptions = { 
     zoom: 15, /* [1] */ 
     center: new google.maps.LatLng(LATVALUE, LONGVALUE), /* [2] */ 
     draggable: false, /* [4] */ 
     mapTypeControl: false, /* [5] */ 
     streetViewControl: false, /* [6] */ 
     styles: /* [3] */ 
      [{"stylers":[{"saturation":-100},{"gamma":1}]},{"elementType":"labels.text.stroke","stylers":[{"visibility":"off"}]},{"featureType":"all","elementType":"geometry.fill","stylers":[{"weight":"2.00"}]},{"featureType":"all","elementType":"geometry.stroke","stylers":[{"color":"#9c9c9c"}]},{"featureType":"all","elementType":"labels.text","stylers":[{"visibility":"on"}]},{"featureType":"landscape","elementType":"all","stylers":[{"color":"#f2f2f2"}]},{"featureType":"landscape","elementType":"geometry.fill","stylers":[{"color":"#ffffff"}]},{"featureType":"landscape.man_made","elementType":"geometry.fill","stylers":[{"color":"#ffffff"}]},{"featureType":"poi","elementType":"all","stylers":[{"visibility":"off"}]},{"featureType":"road","elementType":"all","stylers":[{"saturation":-100},{"lightness":45}]},{"featureType":"road","elementType":"geometry.fill","stylers":[{"color":"#eeeeee"}]},{"featureType":"road","elementType":"labels.text.fill","stylers":[{"color":"#7b7b7b"}]},{"featureType":"road","elementType":"labels.text.stroke","stylers":[{"color":"#ffffff"}]},{"featureType":"road.highway","elementType":"all","stylers":[{"visibility":"simplified"}]},{"featureType":"road.arterial","elementType":"labels.icon","stylers":[{"visibility":"off"}]},{"featureType":"transit","elementType":"fill","stylers":[{"weight":"1.00"}]},{"featureType":"transit","elementType":"labels.icon","stylers":[{"visibility":"on"},{"hue":"#a3cd39"},{"gamma":1},{"saturation":"50"}]},{"featureType":"water","elementType":"all","stylers":[{"color":"#46bcec"},{"visibility":"on"}]},{"featureType":"water","elementType":"geometry.fill","stylers":[{"color":"#c8d7d4"}]},{"featureType":"water","elementType":"labels.text.fill","stylers":[{"color":"#070707"}]},{"featureType":"water","elementType":"labels.text.stroke","stylers":[{"color":"#ffffff"}]}] 
    }; 

    /* 
    * Get the HTML DOM element that will contain your map. We are using a div with 
    * id="map" seen below in the <body> 
    */ 

    var mapElement = document.getElementById('map'); 

    /* 
    * Create the Google Map using our element and options defined above. 
    * 
    * 1. Map varible. 
    * 2. Marker variable so we can specify a retina image and resize. 
    */ 

    var map = new google.maps.Map(mapElement, mapOptions); /* [1] */ 
    var mapIcon = new google.maps.MarkerImage("img/interface/[email protected]", null, null, null, new google.maps.Size(100,78)); /* [2] */ 

    /* 
    * Let's also add a marker while we're at it. 
    */ 

    var marker = new google.maps.Marker({ 
     position: new google.maps.LatLng(LATVALUE, LONGVALUE), 
     map: map, 
     flat: true, 
     title: 'COMPANY NAME', 
     icon: mapIcon, 
     animation: google.maps.Animation.DROP 
    }); 
}

感谢您抽空阅读，希望有人能帮助我的时候了！ :)

来源

2017-02-16 user1406440

看看this answer。使用Waypoints可以在页脚进入视图时触发一个功能。该函数一旦触发将选择标记并向其添加一个包含css转换的类。

var waypoint = new Waypoint({ 
    element: $([selector for footer]), 
    handler: function() { 
    $([selector for marker]).addClass([class containing css transition]); 
    } 
});

的元素告诉滚动过程中，观察其航点DOM元素的位置，并处理是当该元素的排名靠前的视口顶部将触发功能。

来源

2017-02-16 14:56:45

我正在考虑使用航点，但我不确定你会如何去标记一个ID。您可以指定在JavaScript中使用的图像，但看起来像Google地图API会注入所有标记。 – user1406440

在向Google地图标记添加ID方面。看看这个[答]（http://stackoverflow.com/a/3265918/7172409）。 –

仅在视图中放置Google地图标记

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