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javascriptprototypejs

Using Prototype- how do I watch input field for carriage return?

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.

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

    You can find a simple demo in this jsfiddle