Issue
I want to show 2 drop down lists when selecting a value in another drop down list. It should be shown in a collapsible manner (no need to expand drop down lists). I have no idea to do it. A little example with the code will be enough to understand the concept of how it works.
Here is an example of what I expect. But in this there should be drop down list instead of the button. Also 2 drop drown lists should display where the letters are displayed.
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<button type="button" class="btn btn-info" data-toggle="collapse" data-target="#demo">Collapsible Button</button>
<div id="demo" class="collapse">
drop down list must collapse from here
</div>
</div>
</body>
</html>Solution
To achieve your expected result ,use below option
HTML:
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<select onchange="show()">
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</select>
<div id="demo" class="collapse">
<select>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</select>
<select>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="mercedes">Mercedes</option>
<option value="audi">Audi</option>
</select>
</div>
</div>
</body>
</html>
JS:
function show(){
document.getElementById('demo').style.display='inline-block';
}
CSS:
#demo{
position:relative;
top:150px;
display:none;
}
http://codepen.io/nagasai/pen/vKjqgG
Answered By - Naga Sai A
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