<h1>Bấm vào nút để hiển thị nội dung bị ẩn</h1>
<button onclick="showContent()">Hiển Thị nội dung bị ẩn</button>
<template>
<h2>Hoa Sen</h2>
<img src="https://laptrinhtudau.com/wp-content/uploads/2022/01/280px-Sacred_lotus_Nelumbo_nucifera.jpg" width="214" height="204">
</template>
<script>
function showContent() {
var temp = document.getElementsByTagName("template")[0];
var clon = temp.content.cloneNode(true);
document.body.appendChild(clon);
}
</script>
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