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005wide.html
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005wide.html
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<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
</head>
<body>
<div id="root">
<ul>
<li><a href=""></a></li>
<li><a href=""></a></li>
</ul>
<p></p>
<div>
<em>
<span>
xixi
</span>
</p>
</div>
</div>
<script>
const nodes = document.getElementById("root");
function deep_first_seach(node) {
let queue = [node];
while (queue.length > 0) {
const item = queue.shift();
console.log(item.tagName);
for (let i = 0; i < item.children.length; i++) {
queue.push(item.children[i]);
}
}
}
deep_first_seach(nodes);
</script>
</body>
</html>