diff options
| -rw-r--r-- | js/codeq/prolog.js | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/js/codeq/prolog.js b/js/codeq/prolog.js index 4eed354..be4791a 100644 --- a/js/codeq/prolog.js +++ b/js/codeq/prolog.js @@ -371,7 +371,7 @@ editor.setValue(info.solution); $('#title').text(problem.slug); jqDescription.html(problem.description); - $('#btn_code_plan').prop('disabled', problem.plan.length == 0); + $('#btn_code_plan').prop('disabled', (problem.plan || '').length == 0); editor.on('change', function (instance, changeObj) { var doc = editor.getDoc(), |