未捕获的ReferenceError：未定义Firebase [英] Uncaught ReferenceError: Firebase is not defined
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问题描述
我试图在firebase中设计一个数据库的教程，但是在JavaScript控制台中出现以下错误：
未捕获的ReferenceError：未定义Firebase
以下是教程的链接以及我试图运行的代码片段JavaScript控制台是： https://www.firebase.com/blog/2014 -11-04-firebase-realtime-queries.html
var ref = new Firebase（https：/ /dinosaur-facts.firebaseio.com/dinosaurs）; （child_added，function（snapshot）{
console.log（snapshot.key（）+was+ snapshot.val（）。height + 米高）;
}）;
解决方案
在标题中包含以下内容：
< head> < script src ='https：//cdn.firebase.com/js/client/2.2.1/firebase.js'>< / script> < script src ='https：//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js'>< / script> < link rel ='stylesheet'type ='text / css'href ='/ resources / tutorial / css / example.css'> < / head>
这将解决问题。 / p>
I am trying to follow the tutorial on designing a database in firebase, but I am getting the following error in the JavaScript console:
Uncaught ReferenceError: Firebase is not defined
Here is the link to the tutorial, and the code snippet that I was trying to run in the JavaScript console is: https://www.firebase.com/blog/2014-11-04-firebase-realtime-queries.html
var ref = new Firebase("https://dinosaur-facts.firebaseio.com/dinosaurs");
ref.orderByChild("height").on("child_added", function(snapshot) {
console.log(snapshot.key() + " was " + snapshot.val().height + " meters tall");
});
解决方案
In the heading, include the following:
<head>
<script src='https://cdn.firebase.com/js/client/2.2.1/firebase.js'></script>
<script src='https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js'></script>
<link rel='stylesheet' type='text/css' href='/resources/tutorial/css/example.css'>
</head>
That'll solve the problem.
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