select2: 25K Stars and Still the Go-To jQuery Select Box Enhancement

Honestly, modern frontend conversations are all about React, Vue, and Tailwind. jQuery sounds like a relic. But select2, with 25.9K stars, reminds me that some old tools stick around because they solve a classic problem really well.

What This Project Does

Select2 is a jQuery-based enhancement for <select> elements. Native select boxes are too plain — no search, no multi-select, no remote data. Select2 wraps them into a fully-featured dropdown component with almost no backend changes.

Core capabilities:

• Single and multi-select with search filtering
• Remote data loading with pagination and infinite scrolling
• Custom templates for images, descriptions, etc.
• Grouping, disabled items, placeholders
• Form validation compatibility
• Accessibility support

Why Old Projects Still Use It

I recently maintained an old admin panel full of native selects. The product manager suddenly wanted search and multi-select. Rewriting everything in a modern framework would have been expensive. With Select2, I finished the whole migration in two days.

That’s its value: low intrusion, fast results. No business logic changes — just add a class and initialize.

Backend-friendly. Because it’s still fundamentally a select element, form submission works the same way. Unlike some modern component libraries, you don’t need to coordinate new API formats with the backend.

Mature ecosystem. After more than a decade, edge cases have been explored. Stack Overflow is full of answers, and most issues are searchable.

Quick Start

Include jQuery and Select2’s CSS/JS:

<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/select2.min.js"></script>

HTML:

<select class="my-select" style="width: 100%;">
  <option value="1">Option 1</option>
  <option value="2">Option 2</option>
</select>

JavaScript:

$('.my-select').select2({
  placeholder: 'Select an option',
  allowClear: true
});

Remote data loading is also simple:

$('.my-select').select2({
  ajax: {
    url: '/api/items',
    dataType: 'json'
  }
});

Pros and Cons

Pros:

• Works out of the box with minimal intrusion into existing projects
• Comprehensive features: search, multi-select, remote data
• Good compatibility, runs on older browsers
• Mature documentation and large community
• Completely free and open source (MIT)

Cons:

• Depends on jQuery, which modern projects may avoid
• Custom styling requires extra CSS
• Performance with huge datasets is mediocre; pagination helps but virtual scrolling is better
• Updates slowed after 2024, maintenance activity declining
• Integration with React/Vue single-page apps feels awkward

Comparison

Tool	Dependencies	Learning Curve	Remote Data	Modern Framework Integration	Best For
Select2	jQuery	Low	✅	Mediocre	Legacy systems, admin panels
Tom Select	None/optional	Low	✅	Good	Modern replacements
Choices.js	None	Medium	✅	Good	Lightweight modern projects
React-Select	React	Medium	✅	Native	React projects
Vue-Multiselect	Vue	Medium	✅	Native	Vue projects

For a greenfield project I’d probably pick Tom Select or a framework-native component. But for maintaining a jQuery-based legacy system, Select2 remains the safest choice.

Who Should Use It

Three scenarios:

1. Maintaining legacy admin panels — quickly enhance form interactions
2. Projects with restricted tech stacks — can’t introduce modern frontend frameworks
3. Rapid prototyping — don’t want to build a dropdown from scratch

Select2 is like a reliable old colleague. It won’t surprise you, but it won’t let you down either. Used in the right place, it’s actually less hassle than forcing a modern framework into the stack.

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About the Author

Liudingyu is a full-stack developer and heavy GitHub user. With 900+ starred repos over the past 3 years, this site only covers tools I’ve actually used or deeply researched.

📧 Found a great tool to recommend? Email [email protected]