<html>
<body>
<h3>
<input type="text" id="myText" value="一些文本...">
</h3><p>点击“点我” 按钮获取文本域的文本信息。</p>
<button onclick="myFunction()">点我</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myText").value;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>