This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Buscar en Ayuda

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Este tema ha sido archivado. Haz una nueva pregunta si necesitas ayuda.

focus in javascript

  • 1 respuesta
  • 0 tienen este problema
  • 5 visitas
  • Última respuesta de cor-el

drwho1
drwho1
more options

Trying to use onfocus , onfocusout, or finding which element has focus has lead to a problem. In the program I give at the end, if you click out of a input element I can not find where the focus goes. FF does not do both things - focus out and focus on at the same time. I have tried multitude ways of trying to find where focus goes when leaving this element. Have not tried oither elements.

My code: 

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>

<body style="padding-left: 20px">
<input onfocusout="myFunction(0);" ><br><br>
<input onfocusout="myFunction(1);" ><br><br>
<input onfocusout="myFunction(2);" ><br><br>
<input onfocusout="myFunction(3);" >

<script>
function myFunction(top){
    alert(top);
    var bottom = document.activeElement.id;
    alert(bottom);    
}
</script>
</body>
</html>

Trying to use onfocus , onfocusout, or finding which element has focus has lead to a problem. In the program I give at the end, if you click out of a input element I can not find where the focus goes. FF does not do both things - focus out and focus on at the same time. I have tried multitude ways of trying to find where focus goes when leaving this element. Have not tried oither elements. My code: <pre><nowiki><!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> </head> <body style="padding-left: 20px"> <input onfocusout="myFunction(0);" ><br><br> <input onfocusout="myFunction(1);" ><br><br> <input onfocusout="myFunction(2);" ><br><br> <input onfocusout="myFunction(3);" > <script> function myFunction(top){ alert(top); var bottom = document.activeElement.id; alert(bottom); } </script> </body> </html></nowiki></pre><br>

Modificadas por cor-el el

Todas las respuestas (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Try to ask advice on a web development oriented forum.

This might be easier to see what is happening. 

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>

<body style="padding-left: 20px">
<input onfocusin="myFunction('I:0');" onfocusout="myFunction('O:0');" ><br><br>
<input onfocusin="myFunction('I:1');" onfocusout="myFunction('O:1');" ><br><br>
<input onfocusin="myFunction('I:2');" onfocusout="myFunction('O:2');" ><br><br>
<input onfocusin="myFunction('I:3');" onfocusout="myFunction('O:3');" ><br><br>

<textarea id="output" cols="100" rows="30"></textarea>

<script>
 function myFunction(top){
  document.querySelector('#output').value+=top+' :: ';
  var bottom = document.activeElement.nodeName;
  document.querySelector('#output').value+=bottom+'\n';
}
</script>
</body>
</html>