Is it possible to call a function after typing each keyword in ace-editor

Question

What I want to do is that in ace-editor, each time when I finished typing a keyword, a function can be called automatically.

For example, I TYPE the keyword "new" in ace-editor. After I finished typing, an alert function will be called and say "you have typed the keyword 'new'".

Answer 1

you could use change listener or beforeEndOperation listener, and use something like

editor.on("beforeEndOperation", function(e) {
    if (editor.curOp.docChanged && editor.curOp.command.name == "insertstring") {
        var pos = editor.getCursorPosition();
        var token = editor.session.getTokenAt(pos.row, pos.column);
        if (token && token.type == "keyword") {
            alert(
                "Hey there!", 
                "This is me, the most annoying editor feature evar.",
                "Just wanted to let you know, that you have typed a keyword",
                token.value
            );
        }
    }
});