ItemsJS - search engine in javascript

Full text, faceted, dependency free search engine in javascript. Created to perform fast search on small json dataset (up to 1000 elements).

Demo

(by @darkrubyist)

See another demo examples

Features

• faceted search
• full text
• pagination
• no dependencies (only javascript)

Getting Started

NPM

npm install itemsjs

const itemsjs = require('itemsjs')(data, configuration);
const items = itemsjs.search();

Client side

or using from the client side:

npm install itemsjs

<!-- CDN -->
<!-- unpkg: use the latest release -->
<script src="https://unpkg.com/[email protected]/dist/itemsjs.min.js"></script>
<!-- unpkg: use a specific version -->
<script src="https://unpkg.com/[email protected]/dist/itemsjs.min.js"></script>
<!-- jsdelivr: use a specific version -->
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/itemsjs.min.js"></script>

<!-- locally -->
<script src="/node_modules/itemsjs/dist/itemsjs.js"></script>

itemsjs = itemsjs(data, configuration);
itemsjs.search()

Gulp task:

function itemjs() {
  return src('node_modules/itemsjs/dist/itemsjs.min.js')
      .pipe(dest('source/javascripts/'));
}; // Will copy to source/javascripts/itemsjs.min.js

Example

npm install itemsjs

# download json data
wget https://raw.githubusercontent.com/itemsapi/itemsapi-example-data/master/items/movies-processed.json -O data.json

Create search.js:

var data = require('./data.json');

var itemsjs = require('itemsjs')(data, {
  sortings: {
    name_asc: {
      field: 'name',
      order: 'asc'
    }
  },
  aggregations: {
    tags: {
      title: 'Tags',
      size: 10
    },
    actors: {
      title: 'Actors',
      size: 10
    },
    genres: {
      title: 'Genres',
      size: 10
    }
  },
  searchableFields: ['name', 'tags']
});

/**
 * get filtered list of movies 
 */
var movies = itemsjs.search({
  per_page: 1,
  sort: 'name_asc',
  // full text search
  // query: 'forrest gump',
  filters: {
    tags: ['1980s']
  }
})
console.log(JSON.stringify(movies, null, 2));

/**
 * get list of top tags 
 */
var top_tags = itemsjs.aggregation({
  name: 'tags',
  per_page: 10
})
console.log(JSON.stringify(top_tags, null, 2));

Test that with :

node search.js

API

var itemsjs = ItemsJS(data, [configuration])

data

The first data argument is an array of objects.

configuration

Responsible for defining global configuration. Look for full example here - configuration

• aggregations filters configuration i.e. for tags, actors, colors, etc. Responsible for generating facets.

• sortings you can configure different sortings like tags_asc, tags_desc with options and later use it with one key.

• searchableFields an array of searchable fields.

itemsjs.search(options)

options

• per_page amount of items per page.

• page page number - used for pagination.

• query used for full text search.

• sort used for sorting. one of sortings key

• filters filtering items based on specific aggregations i.e. {tags: ['drama' , 'historical']}

• filter function responsible for items filtering. The way of working is similar to js native filter function. See example

• prefilter function which narrows items down in custom way i.e. with filter or slice. See example

• isExactSearch set to true if you want to always show exact search matches. See lunr stemmer and lunr stopWordFilter.

itemsjs.aggregation(options)

It returns full list of filters for specific aggregation

options

• name aggregation name
• per_page filters per page
• page page number
• query used for quering filters. It's not full text search

itemsjs.similar(id, options)

It returns similar items to item for given id

options

• field field name for computing similarity (i.e. tags, actors, colors)
• minimum what is the minimum intersection between field of based item and similar item to show them in the result
• per_page filters per page
• page page number

itemsjs.reindex(data)

It's used in case you need to reindex the whole data

data

An array of objects.

Credit

• Lunr.js for providing full text search.