Question

Opening a DIV with onkeypress, then focusing on a textfield inside

Asked by: aaron_karp

When a user presses the 'q' key on my site, I have a DIV tag change from display:none to display:block. Then, I set the focus to a text field inside that DIV.

In FF, everything works fine. But in Internet Explorer (6) the letter "q" gets typed into the text field. Even if I set the value of the text field to "" immediately after, the "q" still shows up. Any ideas of how to do this? A 500ms timeout might work and be subtle enough, but maybe you guys have better suggestions.

Thanks.

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Asked On
2007-01-15 at 20:45:31ID22123864
Tags

div

,

onkeypress

Topic

JavaScript

Participating Experts
4
Points
500
Comments
6

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Answers

 

by: ic3b3rgPosted on 2007-01-15 at 21:05:42ID: 18321759

This should work:

function youronkeypressfunction(o){
  if(your test for "q"){other stuff; if(!o)event.cancelBubble=true;}
}

 

by: ThogekPosted on 2007-01-15 at 21:09:45ID: 18321772

The timeout might not be a bad idea to try...

Some other thoughts...

When does the "q" appear in the text field?  When you release the "q" key, or before that, as soon as the div and text field appear?

Have you tried the same thing using the onclick or onkeydown events to see if they have the same issue?

You could also try returning false in the onkeypress function you're using now to see if that cancels the original keyboard action.  (E.g., onkeypress="showDiv(); return false;".)

 

by: BrianGEFF719Posted on 2007-01-15 at 22:58:04ID: 18322077

When you get the keycode do something like:

if(window.event) // IE
{
     keynum = e.keyCode
     e.keyCode = 0; //reset it
}
     else if(e.which) // Netscape/Firefox/Opera
{
     keynum = e.which
     e.which = 0; //reset it
}
keychar = String.fromCharCode(keynum)
if (keychar == 'q' || keychar == 'Q')
{
 alert('Q!');
}



Try something like this where you reset the keycode after you've stored it in a variable.

 

by: gops1Posted on 2007-01-16 at 01:06:37ID: 18322359

Can try this:

<html>
      <head>
            <title>Script Demo Gops</title>
            <script language="javascript">
                  var IE = document.all?true:false;
                  if (!IE) document.captureEvents(Event.KEYUP)
                        document.onkeyup = getClicked;

                  function getClicked(e) {
                        var target=window.event?window.event.srcElement:e.target;
                        if(target.type=="text"){
                              if(target.value.indexOf("q")!=-1) document.getElementById('temp').style.display="inline";
                              else if(target.value.length<1 || target.value.indexOf("q")==-1) document.getElementById('temp').style.display="none";
                        }

                  }

            </script>
      </head>
<body>

      <form name="frm1" method="post" action="" onsubmit="return ">
            <input type="text" name="txt1">
            <input type="text" name="txt2">
      </form>
      <div id="temp" style="display:none">Testing DIV</div>
</body>
</html>

 

by: aaron_karpPosted on 2007-01-16 at 18:10:08ID: 18329400

> You could also try returning false in the onkeypress function you're using now to see if that cancels the original keyboard action.  (E.g., onkeypress="showDiv(); return false;".)

Adding "return false" in there works, but disables typing in any form fields on the page =0

So, my keypress handler looks like:

<body onload="loadProcess()" onKeyPress="keypress(event)">

Changing it to <body onload="loadProcess()" onKeyPress="keypress(event); return false"> disables typing, although the div does open.

Then, my keypress function looks like this:

function keypress(e){
  // putting "return false;" here disables every key press on the page, of course
  var evt=(e)?e:(window.event)?window.event:null;
  if(evt){
    var key=(evt.charCode)?evt.charCode: ((evt.keyCode)?evt.keyCode:((evt.which)?evt.which:0));
      evt.cancelBubble=true;
  } else {
      return;  
  }
  if (String.fromCharCode(key)=="q" && document.body){
      showDiv();
      // putting "return false;" here doesn't help
  }


" e.keyCode = 0; //reset it" throws an error in firefox

"event.cancelBubble=true;" didn't work, either. The "q" still showed up.

At the moment i'm using a 200ms timeout before setting the focus to the text box and it's pretty unnoticeable. But I hate feeling like it's a hack =)

 

by: ic3b3rgPosted on 2007-01-16 at 18:27:08ID: 18329471

I tested this in FF & IE:

<html>
<head>
<script>

function keypress(e){
  var evt=(e)?e:(window.event)?window.event:null;
  if(evt){
    var key=(evt.charCode)?evt.charCode: ((evt.keyCode)?evt.keyCode:((evt.which)?evt.which:0));
    if (String.fromCharCode(key)=="q" && document.body){
      document.getElementById("q").focus();
      return false;
    }
  }
  return true;
}

</script>
</head>
<body>
<div><input id="q"></div>
</body>
<script>

(document.all?document.body:window).onkeypress = keypress;

</script>
</html>

20120131-EE-VQP-002

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