bootstrap dropdown activate onfocus code example

Example 1: bootstrap dropdown on hover

<body>
<style>
	.dropdown:hover>.dropdown-menu{
		display: block;
	}
</style>
</body>

Example 2: bootstrap dropdown

<!-- Bootstrap 5 Dropdown -->
<div class="dropdown">
   <button
      class="btn btn-secondary dropdown-toggle"
      type="button"
      id="dropdownMenuButton1"
      data-bs-toggle="dropdown"
      aria-expanded="false"
   >
      Dropdown button
   </button>
   <ul class="dropdown-menu" aria-labelledby="dropdownMenuButton1">
      <li><a class="dropdown-item" href="#">Action</a></li>
      <li><a class="dropdown-item" href="#">Another action</a></li>
      <li><a class="dropdown-item" href="#">Something else here</a></li>
   </ul>
</div>

Example 3: dropdown forms in bootstrap

<li class="dropdown">
         <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown            

         <b class="caret"></b></a>
         <ul class="dropdown-menu">
           <li><a href="#"><form role="form">
<div class="form-group">
  <label for="sel1">Select list (select one):</label>
  <select class="form-control" id="sel1">
    <option>1</option>
    <option>2</option>
    <option>3</option>
    <option>4</option>
  </select>
  <br>
  <label for="sel2">Mutiple select list (hold shift to select more than one):</label>
  <select multiple class="form-control" id="sel2">
    <option>1</option>
    <option>2</option>
    <option>3</option>
    <option>4</option>
    <option>5</option>
  </select>
</div>

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Html Example