xxxxxxxxxx<html><head><meta charset="utf-8"><title>W3Cschool教程(w3cschool.cn)</title></head><body><p id="intro">你好世界!</p><p>该实例展示了 <b>getElementById</b> 方法!</p><script>x=document.getElementById("intro");document.write("<p>文本来自 id 为 intro 段落: " + x.innerHTML + "</p>");</script></body></html>