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js实现两个单选按钮，选不同的选项弹出显示不同的下拉框

2016-06-23 10:35 711 查看

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<body>
<script type="text/javascript">
function switchItem(tag){
var s1 = document.getElementById('s1');
var s2 = document.getElementById('s2');
var s3 = document.getElementById('s3');
if(tag=='外单位'){
s1.style.display = '';
s2.style.display = 'none';
s3.style.display = 'none';
}
else{
s1.style.display = 'none';
s2.style.display = '';
s3.style.display = '';
}
}
</script>
<div>
<label><input type="radio" onclick="switchItem('外单位')" name="radio" />外单位</label>
<label><input type="radio" onclick="switchItem('本单位')" name="radio" />本单位</label>
</div>

<div>
<select id="s1" style="display:none">
<option>外单位A1</option>
<option>外单位A2</option>
<option>外单位A3</option>
</select>
</div>
<div>
<select id="s2" style="display:none">
<option>本单位A1</option>
<option>本单位A2</option>
<option>本单位A3</option>
</select>
<select id="s3" style="display:none">
<option>本单位B1</option>
<option>本单位B2</option>
<option>本单位B3</option>
</select>
</div>
</body>
</html>

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