/
search.js
127 lines (105 loc) · 4.03 KB
/
search.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
/**
* @fileoverview Search functionality
* @author Nicholas C. Zakas
*/
//-----------------------------------------------------------------------------
// Imports
//-----------------------------------------------------------------------------
import algoliasearch from "./algoliasearch.js";
//-----------------------------------------------------------------------------
// Initialization
//-----------------------------------------------------------------------------
// search
const client = algoliasearch('L633P0C2IR', 'bb6bbd2940351f3afc18844a6b06a6e8');
const index = client.initIndex('eslint');
// page
const resultsElement = document.querySelector('#search-results');
const resultsLiveRegion = document.querySelector('#search-results-announcement');
const searchInput = document.querySelector('#search');
const searchClearBtn = document.querySelector('#search__clear-btn');
//-----------------------------------------------------------------------------
// Helpers
//-----------------------------------------------------------------------------
/**
* Executes a search against the Algolia index.
* @param {string} query The search query to execute.
* @returns {Promise<Array<object>>} The search results.
*/
function fetchSearchResults(query) {
return index.search(query, {
// facetFilters: ["tags:docs"]
}).then(({ hits }) => hits);
}
/**
* Removes any current search results from the display.
* @returns {void}
*/
function clearSearchResults() {
while (resultsElement.firstChild) {
resultsElement.removeChild(resultsElement.firstChild);
}
resultsElement.innerHTML = "";
searchClearBtn.setAttribute('hidden', '');
}
/**
* Displays the given search results in the page.
* @param {Array<object>} results The search results to display.
* @returns {void}
*/
function displaySearchResults(results) {
clearSearchResults();
if (results.length) {
const list = document.createElement("ul");
list.setAttribute('role', 'list');
list.classList.add('search-results__list');
resultsElement.append(list);
resultsElement.setAttribute('data-results', 'true');
for (const result of results) {
const listItem = document.createElement('li');
listItem.classList.add('search-results__item');
listItem.innerHTML = `
<h2 class="search-results__item__title"><a href="${result.url}">${result.hierarchy.lvl0}</a></h2>
<p class="search-results__item__context">${result._highlightResult.hierarchy.lvl0.value}</p>
`.trim();
list.append(listItem);
}
searchClearBtn.removeAttribute('hidden');
} else {
resultsLiveRegion.innerHTML = "No results found.";
resultsElement.innerHTML = "No results found.";
resultsElement.setAttribute('data-results', 'false');
searchClearBtn.setAttribute('hidden', '');
}
}
//-----------------------------------------------------------------------------
// Event Handlers
//-----------------------------------------------------------------------------
// listen for input changes
if(searchInput)
searchInput.addEventListener('keyup', function (e) {
const query = searchInput.value;
if(query.length) searchClearBtn.removeAttribute('hidden');
else searchClearBtn.setAttribute('hidden', '');
if (query.length > 2) {
fetchSearchResults(query)
.then(displaySearchResults)
.catch(clearSearchResults);
document.addEventListener('click', function(e) {
if(e.target !== resultsElement) clearSearchResults();
});
} else {
clearSearchResults();
}
});
if(resultsElement)
resultsElement.addEventListener('keydown', function(e) {
if(e.key === "Escape") {
clearSearchResults();
}
}, true);
if(searchClearBtn)
searchClearBtn.addEventListener('click', function(e) {
searchInput.value = '';
searchInput.focus();
clearSearchResults();
});