I’m writing a simple editor in an iframe, but having trouble registering the oninput

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Asked: May 14, 20262026-05-14T16:56:59+00:00 2026-05-14T16:56:59+00:00

I’m writing a simple editor in an iframe, but having trouble registering the oninput

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I’m writing a simple editor in an iframe, but having trouble registering the “oninput” event to detect when the user modifies the text field such as pasting in data etc.

    var txtArea =
    document.getElementById('txtArea'); 
    txtArea.contentWindow.document.designMode="on";
    txtArea.contentWindow.document.open();
    txtArea.contentWindow.document.write("<head><style
    type='text/css'>body{font-size:13px;}</style></head><body>"+data.document+"</body>");
    txtArea.contentWindow.document.close();


    $([txtArea.contentWindow.document]).bind("click",
    updateCaretPosMouse); //fires  
    $([txtArea.contentWindow.document]).bind("keyup",
    updateCaretPosKeyboard); //fires  
    $([txtArea.contentWindow.document]).bind("input",
    textChanged); //doesn't fire

If I create a plain old textarea element, and add the “input” event to this, then it works. Do ‘input” events not work with iframe text areas?