我是jQuery和javaScript的新手。我正在使用bootstrap。我有一个可见的选择菜单和两个隐藏的其他选择菜单。我想显示用户选择的隐藏选择菜单ID" TV"从可见的选择菜单选项。如果他们从可见选择菜单中选择任何其他值选项,我需要显示一个他们可以解释的简单文本框。在线研究之后,我尝试使用一些js来做,但它没有用。下面是我的代码,这是我的jsfiddle链接:https://jsfiddle.net/nx6cc1Lc/
HTML:
<div class="hear-from">
<div class="selects-4 col-xs-12">
<label for="heard_tv">Where did you hear about us from?</label>
<select id="heard_tv" class="form-control selectTV" name="heard_tv">
<option>--Choose Option--</option>
<option value="TV">TV Commercial</option>
<option value="Radio">Radio Advertisement-Other</option>
<option value="OT">Other</option>
</select>
</div>
<div class="selects-5 col-xs-6 hidden">
<select id="heard_from_station" class="form-control selectStation" name="heard_from_station">
<option>--Choose Station--</option>
<option value="TV:ABC">ABC News</option>
<option value="TV:TWCNews">New York 1 - TWC News</option>
<option value="TV:BBC">BBC America</option>
<option value="TV:CNBC">CNBC</option>
<option value="TV:CNN">CNN</option>
<option value="TV:Fox News">FOX News</option>
<option value="TV:Fox Business">FOX Business</option>
<option value="TV:TWCNews">Time Warner News</option>
<option value="TV:HLN">Headline News</option>
<option value="TV:MSNBC">MSNBC</option>
<option value="TV:Other">Other</option>
</select>
</div>
<div class="selects-6 col-xs-6 hidden">
<select id="heard_from_provider" class="form-control selectProvider" name="heard_from_provider">
<option>--Choose Provider--</option>
<option value="TVP:ATT">AT & T</option>
<option value="TVP:Comcast">Comcast</option>
<option value="TVP:Cablevision">Cablevision</option>
<option value="TVP:Charter">Charter Comm.</option>
<option value="TVP:Cox">Cox Comm.</option>
<option value="TVP:DirectTV">DirectTV</option>
<option value="TVP:Dish">Dish Network</option>
<option value="TVP:TimeWarner">Time Warner Cable</option>
<option value="TVP:VerFiOS">Verizon FiOS</option>
<option value="TVP:Antenna">Over the Air / Antenna</option>
<option value="TVP:Other">Other TV Provider</option>
</select>
</div>
</div>
使用Javascript:
// show tv station and provider menus if TV selected
$(document).ready(function(){
$('#heard_tv').on('change', function() {
if ( this.value === "TV")
//.....................^.......
{
$("#heard_from_station").removeClass('hidden');
$("#heard_from_provider").removeClass('hidden');
}
else
{
$('#heard_from_station').removeClass().addClass('hidden');
$('#heard_from_provider').removeClass().addClass('hidden');
}
});
});
答案 0 :(得分:1)
更新您的脚本,如下所示。
Platform.setImplicitExit(false);
由于你的html包含&#34;隐藏&#34;在父元素&#34; .parent()&#34;上的类,您需要在父元素上添加/删除类。或者,您也可以为父元素提供ID,并直接在脚本中使用这些ID,而不使用&#34; .parent()&#34;。
答案 1 :(得分:0)
为此使用jquery的show()和hide()。下面是你的问题的代码部分
<script src="jquery.min.js"></script>
<script src="sample.js"></script>
<div class="hear-from">
<div class="selects-4 col-xs-12">
<label for="heard_tv">Where did you hear about us from?</label>
<select id="heard_tv" class="form-control selectTV" name="heard_tv">
<option>--Choose Option--</option>
<option value="TV">TV Commercial</option>
<option value="Radio">Radio Advertisement-Other</option>
<option value="OT">Other</option>
</select>
</div>
<div class="selects-5 col-xs-6" style="display:none">
<select id="heard_from_station" class="form-control selectStation" name="heard_from_station">
<option>--Choose Station--</option>
<option value="TV:ABC">ABC News</option>
<option value="TV:TWCNews">New York 1 - TWC News</option>
<option value="TV:BBC">BBC America</option>
<option value="TV:CNBC">CNBC</option>
<option value="TV:CNN">CNN</option>
<option value="TV:Fox News">FOX News</option>
<option value="TV:Fox Business">FOX Business</option>
<option value="TV:TWCNews">Time Warner News</option>
<option value="TV:HLN">Headline News</option>
<option value="TV:MSNBC">MSNBC</option>
<option value="TV:Other">Other</option>
</select>
</div>
<div class="selects-6 col-xs-6" style="display:none">
<select id="heard_from_provider" class="form-control selectProvider" name="heard_from_provider">
<option>--Choose Provider--</option>
<option value="TVP:ATT">AT & T</option>
<option value="TVP:Comcast">Comcast</option>
<option value="TVP:Cablevision">Cablevision</option>
<option value="TVP:Charter">Charter Comm.</option>
<option value="TVP:Cox">Cox Comm.</option>
<option value="TVP:DirectTV">DirectTV</option>
<option value="TVP:Dish">Dish Network</option>
<option value="TVP:TimeWarner">Time Warner Cable</option>
<option value="TVP:VerFiOS">Verizon FiOS</option>
<option value="TVP:Antenna">Over the Air / Antenna</option>
<option value="TVP:Other">Other TV Provider</option>
</select>
</div>
</div>
<script> $(document).ready(function(){
$('#heard_tv').on('change', function() {
if ( this.value === "TV")
//.....................^.......
{
$(".selects-5").show();
$(".selects-6").show();
}
else
{
$('.selects-5').hide();
$('.selects-6').hide();
}
});
});</script>
答案 2 :(得分:0)
问题是包含辅助选择菜单的div
标签是隐藏的,而不是选择菜单本身 - 即使这样,您的脚本也会尝试从选择菜单中删除该类。所以有很多方法可以解决这个问题。
解决此问题的一种方法是将隐藏的类应用于您的选择菜单,而不是div
标记。
<div class="selects-5 col-xs-6">
<select id="heard_from_station" class="form-control selectStation hidden" name="heard_from_station">
...
</select>
</div>
<div class="selects-6 col-xs-6">
<select id="heard_from_provider" class="form-control selectProvider hidden" name="heard_from_provider">
...
</select>
</div>