add id jquery
$('element').attr('id', 'value');<h2>Greetings</h2>
<div class="container">
<div class="inner">
Hello
<p>Test</p>
</div>
<div class="inner">
Goodbye
<p>Test</p>
</div>
</div>
<div class="container">
<div class="inner">Hello</div>
<div class="inner">Goodbye</div>
<h2>Greetings</h2>
</div>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>append demo</title>
<style>
p {
background: yellow;
}
</style>
<script src="https://code.jquery.com/jquery-3.5.0.js"></script>
</head>
<body>
<p>I would like to say: </p>
<script>
$( "p" ).append( document.createTextNode( "Hello" ) );
</script>
</body>
</html>
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