下拉框模拟只读

来源:互联网 发布:java static用法 编辑:程序博客网 时间:2024/05/06 15:24
<HTML>
<HEAD>
  <TITLE>下拉框模拟只读</TITLE>
  <script type="text/javascript">
  //根据下拉框ID设置下拉框只读
  function setReadOnly(obj_id){
var obj = document.getElementById(obj_id);
obj.onmouseover = function(){
  obj.setCapture();
}
obj.onmouseout = function(){
  obj.releaseCapture();
}
obj.onfocus = function(){
  obj.blur();
}
obj.onbeforeactivate = function(){
  return false;
}
  }
  </script>
</HEAD>
<BODY>
  <span id="span_select">
  <select id="id_select">
<option value="1">AAAAAAAAA</option>
<option value="2">BBBBBBBBB</option>
<option value="3">CCCCCCCCC</option>
<option value="4">DDDDDDDDD</option>
  </select>
</span>
  <script type="text/javascript">
  setReadOnly("span_select");
  </script>
  <!-- 直接设置下拉框只读 -->
  <select onbeforeactivate="return false" onfocus="this.blur()" onmouseover="this.setCapture()"   onmouseout="this.releaseCapture()">  
</BODY>
</HTML>
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