我刚刚阅读了我能找到的与我遇到的相同问题的所有其他主题，但这对我没有帮助，这就是我在这里发帖的原因。
我试图根据第三个问题的选项值显示其他表单问题。 根据具有相同功能的其他主题，这应该可以正常工作，但对我来说，当我更改值时没有任何反应，并且我找不到任何错误。我还是 JS 的新手。
提前致谢。干杯!
这是我的整个代码:
<!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>Test</title>
<link rel="stylesheet" href="style.css" type="text/css"/>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.js" ></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.js"></script>
<script>
$("#aktivnost").change(function() {
if ($(this).val() == "huddle") {
$(".huddle_q").show();
}
if ($(this).val() == "1on1") {
$(".jnj_q").show();
}
else {
$(".huddle_q", ".jnj_q").hide();
}
});
</script>
</head>
<body>
<form>
<span>Team Leader:</span>
<select name="team_leader">
<option value="dinko_roso"> Dinko Roso </option>
<option value="lucija_starcevic"> Lucija Starčević </option>
<option value="natalija_fluka"> Natalija Fluka </option>
<option value="tamara_zdjelar"> Tamara Zdjelar </option>
<option value="bojan_brnjac"> Bojan Brnjac </option>
<option value="andro_vuljanic"> Andro Vuljanić </option>
</select>
<br />
<span>Ocjenjivač:</span>
<select name="ocjenjivac">
<option value="dinko_roso"> Branimir Spajić </option>
<option value="lucija_starcevic"> Ozren Kovačević </option>
<option value="natalija_fluka"> Dunja Vidak </option>
<option value="tamara_zdjelar"> Anamaria Katić </option>
<option value="bojan_brnjac"> Marko Nimac </option>
</select>
<br />
<span>Aktivnost:</span>
<select id="aktivnost">
<option value="team_meeting"> Team Meeting </option>
<option value="1on1"> 1on1 </option>
<option value="huddle"> Huddle </option>
</select>
<br />
<div class="huddle_q">
<span>Dužina stiskavca:</span>
<input type="radio" name="h_q1" value="0">0</input>
<input type="radio" name="h_q1" value="3">3</input>
<br />
<span>Fokusi:</span>
<input type="radio" name="h_q2" value="0">0</input>
<input type="radio" name="h_q2" value="1">1</input>
<input type="radio" name="h_q2" value="2">2</input>
<input type="radio" name="h_q2" value="3">3</input>
<br />
<span>Parkiranje:</span>
<input type="radio" name="h_q3" value="0">0</input>
<input type="radio" name="h_q3" value="3">3</input>
<br />
<span>Poticanje:</span>
<input type="radio" name="h_q4" value="0">0</input>
<input type="radio" name="h_q4" value="1">1</input>
<input type="radio" name="h_q4" value="2">2</input>
<input type="radio" name="h_q4" value="3">3</input>
<br />
<span>Predstavljanje:</span>
<input type="radio" name="h_q5" value="0">0</input>
<input type="radio" name="h_q5" value="3">3</input>
<br />
<span>Održava atmosferu:</span>
<input type="radio" name="h_q6" value="0">0</input>
<input type="radio" name="h_q6" value="1">1</input>
<input type="radio" name="h_q6" value="2">2</input>
<input type="radio" name="h_q6" value="3">3</input>
</div>
<div class="jnj_q">
<span>Dužina 1on1:</span>
<input type="radio" name="1on1_q1" value="0">0</input>
<input type="radio" name="1on1_q1" value="3">3</input>
<br />
<span>TL prepoznaje i hvali:</span>
<input type="radio" name="1on1_q2" value="0">0</input>
<input type="radio" name="1on1_q2" value="1">1</input>
<input type="radio" name="1on1_q2" value="2">2</input>
<input type="radio" name="1on1_q2" value="3">3</input>
<br />
<span>2QM:</span>
<input type="radio" name="1on1_q4" value="0">0</input>
<input type="radio" name="1on1_q4" value="1">1</input>
<input type="radio" name="1on1_q4" value="2">2</input>
<input type="radio" name="1on1_q4" value="3">3</input>
<br />
<span>Razvoj komp:</span>
<input type="radio" name="1on1_q6" value="0">0</input>
<input type="radio" name="1on1_q6" value="1">1</input>
<input type="radio" name="1on1_q6" value="2">2</input>
<input type="radio" name="1on1_q6" value="3">3</input>
</div>
</form>
</body>
</html>
最佳答案
您的代码在大多数情况下都可以正常工作。您犯的主要错误是您试图在尚不存在的元素上执行代码。您需要 a) 在文档末尾运行代码，或者更常见的是 b) 将代码放入 document.ready 处理程序中。
<强> jsFiddle example
$( document ).ready(function() {
//your code here
});
请注意，在示例 fiddle 中，我添加了 $('.huddle_q, .jnj_q').hide(); 以在更改下拉列表时首先隐藏元素。
关于javascript - 根据选项值显示/隐藏 div，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/25232551/