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<!DOCTYPE html> <html> <body> <h3>如何访问 ARTICLE 元素的演示</h3> <article id="myArticle"> <h1>文章标题</h1> <p>一些文章文本..</p> </article> <p>点击按钮，将文章内容的文字颜色设置为红色。</p> <button onclick="myFunction()">试一试</button> <script> function myFunction() { var x = document.getElementById("myArticle"); x.style.color = "red"; } </script> </body> </html>