Put getElementById() at the bottom

2018-06-25 10:50:34

This question already has an answer here:

$(document).ready equivalent without jQuery 31 answers

You need to wait for your page to be ready before your code can execute on markup in the page. For example, use window.onload handler as in the example below. There are nicer ways to do this such as jQuery methods, but this will serve as an example of what you need.

<html>
<head>
    <script>
        window.onload = function ()
         {
              document.getElementById("txt").innerHTML = "Hello";
         }
    </script>

</head>
<body>

<div id="txt"></div>

</body>
</html>

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