submit input in text area using return without inserting a newline character

Question

I have a binding for a textarea input in Shiny here . To submit the text entered press CTRL-return (CMD-return on Mac). I would prefer the text be submitted on pressing return (ie, without CTRL or CMD) but without creating a newline. Is this possible? Note: A textarea, rather than a textinput, is needed to provide enough space for input without some of the text being hidden.

EDIT: The binding works with CTRL-return (or CMD-return). On lines 18-22 I can use just event.keyCode == 13 and that submits the input but a newline character is also inserted in the textarea. It is that last part (ie, the newline) I would like to avoid.

Answer 1

You should prevent default behavior, which is inserting a new line, before calling your function.

if (event.keyCode == 13 && (event.metaKey || event.ctrlKey)) {
    event.preventDefault();
    ...
}

Answer 2

Your if statements at lines 28 and 30 need curly braces around the conditional parts.

Not sure, but this might be causing some issues...