How to trigger HTML button when you press Enter in textbox?

Question

So the code that I have so far is:

    
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Answer 1

This should do it, I am using jQuery you can write plain javascript.
Replace sendMessage() with your functionality.

$('#addLinks').keypress(function(e) {
    if (e.which == 13) {
        sendMessage();
        e.preventDefault();
    }
});