Google Places API - place_changed侦听器无法正常工作 [英] Google Places API - place_changed listener not working

问题描述

我尝试使用Google Places API中的自动完成功能。我有自动完成自己设置和工作，但我想添加一个监听器，以便我可以使用PlacesResult其他地方的信息。

为了测试这个功能，我试图通过调出一个警告框并将place.name写入一个。这两个东西都没有工作，所以听众显然被配置为错误，但我无法弄清楚我是如何写错的。

I'm trying to use the autocomplete from the Google Places API. I have the autocomplete itself set up and working, but I want to add a listener so that I can use information from the PlacesResult elsewhere.

To test the functionality, I'm trying to prove the listener is working by bringing up an alert box, and writing the place.name into a . Neither thing is working, so the listener is obviously configured wrong I suppose, but I can't figure out how I've written it wrong.

<!-- Load Places Library for Google Maps-->
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?libraries=places&sensor=false">
</script>

<!-- Autocomplete Script -->
<script type="text/javascript">
function initialize(){
    var input = document.getElementById('name');
    var autocomplete = new google.maps.places.Autocomplete(input);
}
google.maps.event.addDomListener(window, 'load', initialize);

google.maps.event.addListener(autocomplete, 'place_changed', function(){
    var place = autocomplete.getPlace();
    alert("This function is working!");
    document.getElementById("receiver").innerHTML=place.name;
});
</script>

推荐答案

移动 addListener 到 初始化 。

Move the call of addListener to initialize .

否则 addListener 将在 之前调用，初始化 ， autocomplete 在此时是未知的，并且在此范围内（它不是全局的）

Otherwise addListener will be called before initialize , autocomplete will be unknown at this time and in this scope(it's not global)

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