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JavaScript - Uncaught ReferenceError: _ is not defined
1 answers
0 points
I've been trying to use underscore (_) in my code and I've got a ReferenceError. Do you know how to fix it?
The error:
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Uncaught ReferenceError: _ is not definedMy code:
xxxxxxxxxx1
2
<html>3
<body>4
<script>5
6
var object = { id: 1, name: 'Mark' };7
var array = _.values(object);8
9
</script>10
</body>11
</html> 1 answer
0 points
You need to import underscore.js in your code.
The best way to do it is to create <head> section in your code and import underscore.js there using a <script> tag with CDN URL as a source.
Example <script> with underscore.js v1.13.4 CDN URL:
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<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/underscore@1.13.4/underscore-umd-min.js"></script>Full example:
xxxxxxxxxx1
2
<html>3
<head>4
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/underscore@1.13.4/underscore-umd-min.js"></script>5
</head>6
<body>7
<script>8
9
var object = { id: 1, name: 'Mark' };10
var array = _.values(object);11
12
</script>13
</body>14
</html>Note:
Go to the Underscore.js site for more information and CDN URLs.
References
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