hugo-book-theme/assets/search.js

54 lines
1.4 KiB
JavaScript

'use strict';
{{ $searchDataFile := printf "%s.%s" .Language.Lang "search-data.js" }}
{{ $searchData := resources.Get "search-data.js" | resources.ExecuteAsTemplate $searchDataFile . | resources.Minify | resources.Fingerprint }}
(function() {
const input = document.querySelector('#book-search-input');
const results = document.querySelector('#book-search-results');
input.addEventListener('focus', init);
input.addEventListener('keyup', search);
function init() {
input.removeEventListener('focus', init); // init once
input.required = true;
loadScript('{{ "flexsearch.min.js" | relURL }}');
loadScript('{{ $searchData.RelPermalink }}', function() {
input.required = false;
search();
});
}
function search() {
while (results.firstChild) {
results.removeChild(results.firstChild);
}
if (!input.value) {
return;
}
const searchHits = window.bookSearchIndex.search(input.value, 10);
searchHits.forEach(function(page) {
const li = document.createElement('li'),
a = li.appendChild(document.createElement('a'));
a.href = page.href;
a.textContent = page.title;
results.appendChild(li);
});
}
function loadScript(src, callback) {
const script = document.createElement('script');
script.defer = true;
script.async = false;
script.src = src;
script.onload = callback;
document.head.appendChild(script);
}
})();