JS Map保存节点
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
</head>
<body>
<p>1</p>
<script type="text/javascript">
const _elementKey = () => {
// 补全代码
let name = document.querySelector('p');
let val = document.querySelector('p').innerText;
let map = new Map();
return map.set(name, val);
}
</script>
</body>
</html>
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