CodeMirror - Trying to highlight a line

Questions
1

Hello all,
I am working on a package that will use the CodeMirror file editor in my package.
For part of the package it will highlight errors in the file, by marking the lines in red.

The JS Api for CodeMirror allows this to be done, I am just having a problem getting the existing code editor as a Javascript Object, allowing me to run the functions & methods available on the CodeMirror object.

Here is my attempt, but without luck:

<script type="text/javascript">
    function highlightLine(lineNumber) {
            
        //This seems to re-inititalize
        var editor = CodeMirror.fromTextArea(document.getElementById("body_CodeTextBox"),	{
            lineNumbers: true,
            matchBrackets: true
        });

        //Log the editor object

        console.log(editor);


        //Then highlight the line

        var line = editor.getLineHandle(lineNumber);

        console.log(line);

            

        //Set line css class

        editor.addLineClass(line, ‘background’, ‘line-error’);

    }

</script>

Any ideas please?

Thanks,
Warren

 

This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/42232-codemirror-trying-to-highlight-a-line