summernote method doesnt exist

[pipiscrew]

when click the preview button I getting :

looking through
https://github.com/summernote/summernote/blob/develop/examples/textarea.html
line26 - $('.summernote').summernote('code')

your example code :
$('.preview-btn').click(function () { $('#preview-box').html($('.summernote').code()); $('.summernote').code(''); prettyPrint(); });
modified code :
$('.preview-btn').click(function () { $('#preview-box').html($('.summernote').summernote('code')); $('.summernote').val(''); prettyPrint(); });
working, is buggy when inserting HTML code...

[heyanlong]

@pipiscrew please use

$('#summernote').summernote('code');