tryjsref_text_disabled3 在线代码实例

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<!DOCTYPE html>
<html>
<body>
姓: <input type="text" id="myText" value="Mickey"><br>
<button onclick="disableTxt()">禁用文本域</button>
<button onclick="undisableTxt()">启用文本域</button>
<script>
function disableTxt() {
    document.getElementById("myText").disabled = true;
}
function undisableTxt() {
    document.getElementById("myText").disabled = false;
  }
</script>
</body>
</html>
 
 
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运行结果
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