App下載
實(shí)例代碼( Tip: 登錄后體驗(yàn)更佳 )
<!DOCTYPE html>
<html>
<body>
姓名: <input type="text" id="myText">
<p>点击按钮设置文本域的尺寸。</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction() {
    document.getElementById("myText").size = "50";
}
</script>
</body>
</html>
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