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html - Add an element to the DOM with JavaScript

I want add an element with JavaScript.

I have the following code:

var collection = document.getElementsByTagName('body');
var a = document.createElement('div');
a.innerHTML = 'some text';
collection.item(0).firstChild.appendChild(a);

and simple HTML:

<html>
    <head></head>
<body>

</body>
</html>

Where is mistake?

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0 votes
by (71.8m points)

This should do what you are looking for:

    var newdiv = document.createElement("div");
    newdiv.appendChild(document.createTextNode("some text"));
    document.body.appendChild(newdiv);
<html>
    <head></head>
<body>

</body>
</html>

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