Code mirror get uncomment code only

Question

I have implemented the latest code mirror in our asp.net application. the editor allows to type javascript which has commented code and un commented code.

I want to know whether all the code written in the editor is commented or not.

Can anyone please advice.

Answer 1

You can fetch the document text, than pass it through a regex, filtering out all the comments:

var editor = CodeMirror.fromTextArea(document.getElementById('code'), {
    lineNumbers: true
});

var out = document.getElementById('out');
out.textContent = editor.getValue()
        .replace(/(?:\/\*(?:[\s\S]*?)\*\/)|(?:[\s;]+\/\/(?:.*)$)/gm, '');

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Demo