Inserting a new text at given cursor position

Question

I am working on customizing the codemirror for my new language mode. As part of this new mode implementation, I am writing a new tool bar where user can select some text and

Answer 1

Here's how I did it:

function insertTextAtCursor(editor, text) {
    var doc = editor.getDoc();
    var cursor = doc.getCursor();
    doc.replaceRange(text, cursor);
}