I am trying to use CodeMirror for syntax highlighting in a textarea. I am also using Bootstrap 2.3 for the textarea. I get the code in the textarea displayed by Bootstrap, but instead of the syntax highlighting in CodeMirror I get this error in the Chrome console:
Uncaught TypeError: Cannot set property 'display' of undefined.
This is the Javascript I use for the given form, the object is null.
var myCodeMirror = CodeMirror.fromTextArea($('#formId'), {
mode: {name: "python",
version: 2,
singleLineStringErrors: false},
lineNumbers: true,
//indentUnit: 4,
smartIndent: true,
tabSize: 2,
indentWithTabs: true,
tabMode: "shift",
autofocus: true,
matchBrackets: true
});
It would have been really helpful to get the full set of code in order to find the error. See: http://sscce.org/
The only thing I can do is to provide a piece of code where bootstrap and codemirror actually work together:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/2.3.2/js/bootstrap.min.js"></script>
<link rel=stylesheet href="//codemirror.net/doc/docs.css">
<link rel=stylesheet href="//codemirror.net/lib/codemirror.css">
<link rel=stylesheet href="//codemirror.net/theme/night.css">
<script src="//codemirror.net/lib/codemirror.js"></script>
<script src="//codemirror.net/mode/python/python.js"></script>
</head>
<body>
<div class="container">
<h2>Form control: textarea</h2>
<p>The form below contains a textarea for python:</p>
<form role="form">
<div class="form-group">
<label for="comment">Comment:</label>
<textarea class="form-control" rows="5" id="comment">
# indent your Python code to put into an email
import glob
# glob supports Unix style pathname extensions
python_files = glob.glob('*.py')
for file_name in sorted(python_files):
print ' ------' + file_name
with open(file_name) as f:
for line in f:
print ' ' + line.rstrip()
print
</textarea>
</div>
</form>
</div>
<script>
var myCodeMirror = CodeMirror.fromTextArea(document.getElementById('comment'), {
mode: {name: "python",
version: 2,
singleLineStringErrors: false},
lineNumbers: true,
//indentUnit: 4,
smartIndent: true,
tabSize: 2,
indentWithTabs: true,
tabMode: "shift",
autofocus: true,
matchBrackets: true
});
</script>
</body>
</html>