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<title>蜜蜂教程(mifengjc.com)</title>6
<script>7
function displayResult() {8
document.getElementById('td1').vAlign = "top";9
document.getElementById('td2').vAlign = "top";10
document.getElementById('td3').vAlign = "top";11
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<th>Firstname</th>19
<th>Lastname</th>20
<th>Text</th>21
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<td id="td1">Peter</td>24
<td id="td2">Griffin</td>25
<td id="td3">你好，我的名字叫Peter，我需要一个长文本来演示，我需要一个长文本来演示。</td>26
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</table>28
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<button type="button" onclick="displayResult()">内容向上对齐</button>30
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</body>32
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