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<h1>HTML DOM insertAdjacentElement() Method</h1>
<p>This method inserts a specified element, into a specified position.</p>
<span style="color:red">My span</span>
<h2 id="myH2">My Header</h2>
<p>Click the button to insert the red span inside the header:</p>
<button onclick="myFunction()">Move span</button>
<script>
function myFunction() {
var s = document.getElementsByTagName("span")[0];
var h = document.getElementById("myH2");
h.insertAdjacentElement("afterbegin", s);
}
</script>
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