Example:

Styles:

<link rel="stylesheet" href="./dist/css/arm-ui.min.css">

Script:

<script src="./dist/js/arm-ui.min.js"></script>

Markup:

Accordion

<div class="accordion">
    <div>Question1</div>
    <div>Answer1</div>
</div>   

Dropdown             
       
<div id="dropdown-lang" class="dropdown">
  <button class="toggler">Some text</button>
  <ul class="dropdown__content">
    <li>
      <a href="">111</a>
    </li>
  </ul>
</div>  

Popup      
    
<div class="popup">
    <div>Popup text</div>
</div>
<button class="j-popup">Show popup</button>     
     
Select
    
<select class="my-select" data-placeholder="Choose option">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
</select>   

Tabs  
    
<ul class="tabs">
    <li>
        <button data-pane="pane-1">Link 1</button>
    </li>
    <li>
        <button data-pane="pane-2">Link 2</button>
    </li>
</ul>
<div id="pane-1">Content 1</div>
<div id="pane-2">Content 2</div>   

Initialization:

Accordion   
    
new ArmUI.Accordion({
    el: '.accordion',
    openOneCloseAll: false,
    toggleIcon: '<svg></svg>'
});
   
or
    
new ArmUI.Accordion();  -> default initialization by root element/elements with className "accordion"

Dropdown   

new ArmUI.Dropdown('#dropdown-lang', {
    togglers: document.querySelectorAll('.toggler'),
    toggleIcon: '<svg></svg>',
    bodyClose: true,
    opened: false,
    onOpen: function() {},
    onClose: function() {}
});
 
Popup
    
new ArmUI.Popup({
    el: '.popup',
    openers: '.j-popup',
    closable: true,
    closeIcon: '<svg></svg>',
    onLoad: function() {},
    onOpen: function(event) {
       //event param is available for interaction
    },
    onClose: function() {}
});

Select 
 
new ArmUI.SelectExtended('.my-select', {
    containerClass: 'additional-class',
    multiSelect: false,
    multiSelectedText: 'Chosen',
    onChange: function() {}
}); 
    
Tabs    
    
new ArmUI.Tabs({
    tabTogglers: '.tabs button',
    onLoad: function() {}
})
    
or
    
new ArmUI.Tabs();    -> default initialization by root element/elements with className "tabs"