如何在HTML JavaScript中验证Google Maps API密钥? [英] How to verify a google maps api key in html javascript?
问题描述
我有一个标准的Google Maps页面，使用我自己的API密钥.该页面仅通过JS进行一些标记添加，并将其显示在文本框中.如果密钥无效，过期或其他原因，则显示以下页面.
I have a rather standard Google Maps page, using my own API key. The page only does some marker additions by JS and presenting it in a text-box. If the key is invalid or expired or whatever, the following page is displayed.
很好，但是我想至少告诉用户为什么它是错误的.可以通过标准访问该地图:
That is fine, but then I would like to at lest tell the user why it is wrong. The map is accessed by standard:
...
<script type="text/javascript"
src="http://maps.google.com/maps/api/js?key=API_KEY"></script>
</head>
<body>
<div id="map"></div>
<p><input type="text" "readonly" id="status" size=40></p>
...
但是，我想检查该API密钥是否有效并且有效，并在该文本框中告诉用户该密钥是否正确.
However, I would like to check that the API key is working and valid, and tell the user if the key is OK or not in that text box.
我该怎么办?
PS.在src=中使用callback函数的问题是，无论API状态是什么，它都会返回，但实际上不是状态本身. 在这里是对此的一个无奈的解决方案.
PS. The problem with using a callback function in the src=, is that it returns regardless what is the API status, but not actually the status itself. Here is a kludge solution of this.
编辑:我在一个晦涩难懂的记录不充分的回调函数gm_authFailure()，并通过以下方式解决了我的问题:
EDIT: I found an answer in the obscurely and poorly documented callback function, gm_authFailure(), and solved my question with:
function gm_authFailure() {
let apiError = "No or invalid API key!"
document.getElementById('status').value = apiError;
};
您甚至不需要在URL中指定此回调，它仍然会使用它！
You don't even need to specify this callback in your URL, it will use it anyway!
推荐答案
添加此内容:
function gm_authFailure() { alert('yo'); };
在全球范围内.按照这个:
In the global scope. Per this:
https://developers.google.com/maps/documentation/javascript/events#auth-errors
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