Prevent form submission on Enter key press

Question

I have a form with two text boxes, one select drop down and one radio button. When the enter key is pressed, I want

Answer 1

Use event.preventDefault() inside user defined function

 ...

function userFunction(ev) 
{
    if(!event.target.send.checked) 
    {
        console.log('form NOT submit on "Enter" key')

        ev.preventDefault();
    }
}

Open chrome console> network tab to see

  

   submit on enter