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Editorial Team
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Asked: 2026-05-27T13:21:37+00:00

This is my code: <script> function f(){ var i=document.getElementById(i); i.focus(); var evt = document.createEvent(KeyboardEvent);

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This is my code:

<script>
function f(){
var i=document.getElementById("i");
i.focus();
 var evt = document.createEvent("KeyboardEvent");
    evt.initKeyEvent("keypress", true, true, null, false, false, false, false, 

0, 32);
    i.dispatchEvent(evt);
}
</script>
<body onload="f();">
<input id="i"/>
</body>

Open the script in firefox and it’s working. The empty space within the input box shows that the code has worked.

However the above piece of code doesn’t work in Chrome, Safari, Opera etc etc.

How do we modify the code above to make it work in these browsers?

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1 Answer

  1. Editorial Team

    For Webkit-based browsers (Safari/Chrome), the event initialization call should look a bit differently (see https://bugs.webkit.org/show_bug.cgi?id=13368):

    initKeyboardEvent(in DOMString typeArg, 
                  in boolean canBubbleArg, 
                  in boolean cancelableArg, 
                  in views::AbstractView viewArg, 
                  in DOMString keyIdentifierArg, 
                  in unsigned long keyLocationArg, 
                  in boolean ctrlKeyArg, 
                  in boolean shiftKeyArg, 
                  in boolean altKeyArg, 
                  in boolean metaKeyArg, 
                  in boolean altGraphKeyArg);
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