Custom widgets from scratch

Using the raw widget API of InstantSearch.js v2 to create a minimalist implementation of a search UI

by bobylito

HTML

<script src="https://cdn.jsdelivr.net/npm/instantsearch.js@2/dist/instantsearch.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/instantsearch.js@2/dist/instantsearch.min.css">
<h3>
<a href="https://github.com/algolia/instantsearch.js/v2/guides/custom-widget.html">instantsearch.js</a> custom widget example
</h3>

<label>search:
  <input id="searchBox" />
</label>
<h2>
Movies
</h2>
<div id="hits"></div>

CSS

*{ font-family: helvetica, arial; }

em {
  color: #099;
  font-style: normal;
  text-decoration: underline;
}

JavaScript

const search = instantsearch({
  appId: 'latency',
  apiKey: '6be0576ff61c053d5f9a3225e2a90f76',
  indexName: 'movies',
});

search.addWidget({
  init: function(opts) {
    const helper = opts.helper;
    const input = document.querySelector('#searchBox');
    input.addEventListener('input', function(e) {
      helper.setQuery(e.currentTarget.value) // update the parameters
            .search(); // launch the query
    });
  }
});

search.addWidget({
  render: function(opts) {
    const results = opts.results;
    // read the hits from the results and transform them into HTML.
    document.querySelector('#hits').innerHTML = results.hits.map(function(h) {
      return '<p>' + h._highlightResult.title.value + '</p>';
    }).join('');
  }
});

search.start();