drop-down-menu

Force Bootstrap dropdown menu to always display at the bottom and allow it go offscreen

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For Bootstrap 5 (≥ 5.0) Completely disable Popper.js dynamic positioning by setting data-bs-display=”static” on dropdown-toggle element (button or link). From Bootstrap 5 Docs > Dropdowns: Options: By default, we use Popper.js for dynamic positioning. Disable this with static. .window { height: 8em; overflow: auto; margin: 1em; padding: 1em; border: 10px solid #DFEAF2; } <script src=”https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js”></script> … Read more

twitter bootstrap – multi column dropdown

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I’ve solved it by adding class “columns” where I’ve set columns count and drop down width. Of course you can set columns count and width depending on media queries. https://jsfiddle.net/maciej_p/eatv1b4b/18/ HTML: <li class=”dropdown”> <a href=”#” class=”dropdown-toggle” data-toggle=”dropdown”>wybierz region<b class=”caret”></b></a> <ul class=”dropdown-menu columns”> <li><a href=”#”><strong>Górny Śląsk</strong></a></li> <li><a href=”#”>powiat będziński</a></li> <li><a href=”#”>powiat bielski</a></li> <li><a href=”#”>powiat bieruńsko-lędziński</a></li> <li><a … Read more

How should I customize DropdownButtons and DropdownMenuItems in Flutter?

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You can accomplish this by wrapping the DropdownButton in a Theme widget and overriding the canvasColor. import ‘package:flutter/material.dart’; void main() { runApp(new MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return new MaterialApp( home: new MyHomePage(), ); } } class MyHomePage extends StatefulWidget { State createState() => new MyHomePageState(); } class … Read more

Allow click on twitter bootstrap dropdown toggle link?

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Just add disabled as a class on your anchor: <a class=”dropdown-toggle disabled” href=”http://google.com”> Dropdown <b class=”caret”></b></a> So all together something like: <ul class=”nav”> <li class=”dropdown”> <a class=”dropdown-toggle disabled” href=”http://google.com”> Dropdown <b class=”caret”></b> </a> <ul class=”dropdown-menu”> <li><a href=”#”>Link 1</a></li> <li><a href=”#”>Link 2</a></li> </ul> </li> </ul>

Check if value is in select list with JQuery

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Use the Attribute Equals Selector var thevalue=”foo”; var exists = 0 != $(‘#select-box option[value=”+thevalue+”]’).length; If the option’s value was set via Javascript, that will not work. In this case we can do the following: var exists = false; $(‘#select-box option’).each(function(){ if (this.value == ‘bar’) { exists = true; return false; } });

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