本例获取 textarea 的 id:
</>code
- <html>
- <head>
- <script type="text/javascript">
- function alertId()
- {
- alert(
document.getElementById('txt1').id
);- }
- </script>
- </head>
- <body>
- <textarea id="txt1">
- Hello world....This is a textarea
- </textarea>
- <br />
- <input type="button" onclick="alertId()" value="Alert ID" />
- </body>
- </html>
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