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Editorial Team
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Asked: 2026-05-25T06:22:44+00:00

<!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd> <html xmlns=http://www.w3.org/1999/xhtml> <head> <meta http-equiv=Content-Type content=text/html;

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>test</title>
    <script type="text/javascript">
    window.onload = function(){
        document.getElementById("myMessage").innerHTML = "hello,world!";
    }
</script>
</head>

<body>
    <h1 id=="myMessage"></h1>

</body>
</html>

when i run the file, there is no hello,world! output. why?

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1 Answer

  1. Editorial Team

    Your script block shoul be in the <head> or <body>, not outside either.

    It’s hard to keep track of your question with you editing it every 20 seconds.

    Your latest problem appears to be this

    <h1 id=="myMessage"></h1>

    It should be

    <h1 id="myMessage"></h1>

    Demo here – http://jsfiddle.net/3Xzka/

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