lunr

Lunr.js

A bit like Solr, but much smaller and not as bright.

Example

A very simple search index can be created using the following:

var idx = lunr(function () {
  this.field('title')
  this.field('body')

  this.add({
    "title": "Twelfth-Night",
    "body": "If music be the food of love, play on: Give me excess of it…",
    "author": "William Shakespeare",
    "id": "1"
  })
})

Then searching is as simple as:

idx.search("love")

This returns a list of matching documents with a score of how closely they match the search query as well as any associated metadata about the match:

[
  {
    "ref": "1",
    "score": 0.3535533905932737,
    "matchData": {
      "metadata": {
        "love": {
          "body": {}
        }
      }
    }
  }
]

API documentation is available, as well as a full working example.

Description

Lunr.js is a small, full-text search library for use in the browser. It indexes JSON documents and provides a simple search interface for retrieving documents that best match text queries.

Why

For web applications with all their data already sitting in the client, it makes sense to be able to search that data on the client too. It saves adding extra, compacted services on the server. A local search index will be quicker, there is no network overhead, and will remain available and usable even without a network connection.

Installation

Simply include the lunr.js source file in the page that you want to use it. Lunr.js is supported in all modern browsers.

Alternatively an npm package is also available npm install lunr.

Browsers that do not support ES5 will require a JavaScript shim for Lunr to work. You can either use Augment.js, ES5-Shim or any library that patches old browsers to provide an ES5 compatible JavaScript environment.

Features

• Full text search support for 14 languages
• Boost terms at query time or boost entire documents at index time
• Scope searches to specific fields
• Fuzzy term matching with wildcards or edit distance

Contributing

See the CONTRIBUTING.md file.

Similar packages

Other packages similar to lunr

elasticlunr

Elasticlunr is a lightweight full-text search engine in JavaScript. It is based on lunr.js but provides more flexibility and is faster than lunr.js. It allows for configuring similarity tuning, custom scoring, and has a chainable API.

fuse.js

Fuse.js is a powerful, lightweight fuzzy-search library with a rich set of options. It is different from lunr in that it performs 'fuzzy' searches, which can find matches even when the search terms are not exactly the same as the indexed terms.

js-search

Js-search is a library that enables efficient search in JavaScript and JSON objects. It supports various search strategies and is more customizable than lunr, allowing for indexing and searching in multiple languages.

algoliasearch

Algolia is a hosted search API that provides a full suite of search features. It is more feature-rich and scalable than lunr, offering real-time search, typo tolerance, and geo-search out of the box. Unlike lunr, it requires an external service and is not a purely client-side solution.