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html
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<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<p>Id: Hello <b id="userName0"></b></p>
<script>
let userName0 = prompt("Please enter your name");
document.getElementById('userName0').textContent = userName0;
</script>
<p>class: Hello
<b class="user-name"></b></p>
<script>
let userName = prompt("Please enter your name");
let userNameElements = document.getElementsByClassName("user-name");
for (let i = 0; i < userNameElements.length; i++) {
userNameElements[i].textContent = userName;
}
</script>
</body>
</html>
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css
css
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body {
}
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js
js
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