我想根据所选的选择值显示/隐藏td标记内的div。我无法显示标签文本,只显示文本框。有人可以帮我一把吗?
到目前为止,这是我的代码
<script>
function toggleOther(chosen){
if (chosen == 'oth') {
document.myform.other.style.visibility = 'visible';
} else {
document.myform.other.style.visibility = 'hidden';
document.myform.other.value = '';
}
}
</script>
<form name="myform">
<tr>
<td>
<select name="values" size="1" onchange="toggleOther( document.myform.values.options[ document.myform.values.selectedIndex ].value );">
<option value=" " selected="selected"> </option>
<option value="name">Name</option>
<option value="age">Age</option>
<option value="oth">Other</option>
</select>
</td>
<td>
<div style="visibility:hidden">
<label>adfdasfgsfg</label>
<input type="text" name="other" value="" size="25" />
</div>
</td>
</tr>
</form>
答案 0 :(得分:1)
为元素指定一个id:
<div id="Other" style="visibility:hidden">
现在您可以在代码中轻松访问它:
document.getElementById('Other').style.visibility = 'visible';
以下是包含更改,测试和工作的代码:
<script>
function toggleOther(chosen){
if (chosen == 'oth') {
document.getElementById('Other').style.visibility = 'visible';
} else {
document.getElementById('Other').style.visibility = 'hidden';
document.myform.other.value = '';
}
}
</script>
<form name="myform">
<tr>
<td>
<select name="values" size="1" onchange="toggleOther( document.myform.values.options[
document.myform.values.selectedIndex ].value );">
<option value=" " selected="selected"> </option>
<option value="name">Name</option>
<option value="age">Age</option>
<option value="oth">Other</option>
</select>
</td>
<td>
<div id="Other" style="visibility:hidden">
<label>adfdasfgsfg</label>
<input type="text" name="other" value="" size="25" />
</div>
</td>
</tr>
</form>
答案 1 :(得分:0)
问题在于您已将<div>
添加到hidden
的可见性,但您的javascript仅显示您的输入。 (document.myform.other.style.visibility
)
要使其正常运作,只需将<div>
id
给出并显示并隐藏它:
// ... snip ...
function toggleOther(chosen){
var piece_to_hide = document.getElementById("otherValues");
if (chosen == 'oth') {
piece_to_hide.style.display = 'block';
} else {
piece_to_hide.style.display = 'none';
document.myform.other.value = '';
}
}
// ... snip ...
<div id="otherValues" style="display:none">
<label>adfdasfgsfg</label>
<input type="text" name="other" value="" size="25" />
</div>