Question

I’m using the JS library Prototype– how can I watch a text input field and when return is pressed, alert the contents of the field to the user? (There is no < form > on the page, just the input field.)

Here’s roughly what I want to do:

Enter something: <input type='text' id='myfield'>

<script>
  if([keydown event in #myfield]) {
     alert("You typed: "+[contents of #myfield]);
  }
</script>

Thanks.

Answer 1

$('myfield').observe('keypress', function(event){
    if(event.keyCode == Event.KEY_RETURN)
        alert($('myfield').value);
});​

You can find a simple demo in this jsfiddle