代码示例:(标识:jsck_element_lang)
<!DOCTYPE html>
<html>
<body>

<h1>Element 对象</h1>

<h2>lang 属性</h2>

<p id="myP" lang="en">本段的语言代码是:</p>

<p id="demo"></p>

<script>
let text = document.getElementById("myP").lang;
document.getElementById("demo").innerHTML = text;
</script>

</body>
</html>
运行结果: