https://www.1lg.com/wp-content/themes/picostrap5-child-base/js/functions.js?ver=202210271655

1/*! ============ Functions ============ */
2/*jshint esversion: 6 */
3
4'use strict';
5
6/**
7 * window.requestIdleCallback()
8 * version 0.0.0
9 * Browser Compatibility:
10 * https://developer.mozilla.org/en-US/docs/Web/API/Window/requestIdleCallback#browser_compatibility
11 */
12if (!window.requestIdleCallback) {
13  window.requestIdleCallback = function (callback, opts) {
14    var options = opts || {};
15    var relaxation = 1;
16    var timeout = options.timeout || relaxation;
17    var start = performance.now();
18    return setTimeout(function () {
19      callback({
20        get didTimeout() {
21          return options.timeout ? false : performance.now() - start - relaxation > timeout;
22        },
23        timeRemaining: function () {
24          return Math.max(0, relaxation + (performance.now() - start));
25        },
26      });
27    }, relaxation);
28  };
29}
30
31/**
32 * window.cancelIdleCallback()
33 * version 0.0.0
34 * Browser Compatibility:
35 * https://developer.mozilla.org/en-US/docs/Web/API/Window/cancelIdleCallback#browser_compatibility
36 */
37if (!window.cancelIdleCallback) {
38  window.cancelIdleCallback = function (id) {
39    clearTimeout(id);
40  };
41}
42
43/**
44 * window.requestAnimationFrame()
45 * version 0.0.0
46 * Browser Compatibility:
47 * https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame#browser_compatibility
48 */
49if (!window.requestAnimationFrame) {
50  window.requestAnimationFrame = function (callback) {
51    return window.setTimeout(function () {
52      callback(Date.now());
53    }, 1000 / 60);
54  };
55}
56
57/**
58 * window.cancelAnimationFrame()
59 * version 0.0.0
60 * Browser Compatibility:
61 * https://developer.mozilla.org/en-US/docs/Web/API/Window/cancelAnimationFrame#browser_compatibility
62 */
63if (!window.cancelAnimationFrame) {
64  window.cancelAnimationFrame = function (id) {
65    clearTimeout(id);
66  };
67}
68
69// debounce callback calls
70function debounce(cb, delay = 250) {
71  let timeout;
72
73  return (...args) => {
74    clearTimeout(timeout);
75    timeout = setTimeout(() => {
76      cb(...args);
77    }, delay);
78  };
79}
80
81window.addEventListener('pageshow', (event) => {
82  // You can measure bfcache hit rate by tracking all bfcache restores and
83  // other back/forward navigations via a seperate event.
84  const navigationType = performance.getEntriesByType('navigation')[0].type;
85  if (event.persisted || navigationType == 'back_forward') {
86    // Log a Conversion for Goal 1
87    window._paq = window._paq || [];
88    window._paq.push(['trackGoal', 1, 0, { 'isBFCache': event.persisted }]);
89  }
90});
91
92// event delegation
93function delegate_event(event_type, ancestor_element, target_element_selector, listener_function) {
94  ancestor_element.addEventListener(event_type, function (event) {
95    if (event.target && event.target.matches && event.target.matches(target_element_selector)) {
96      listener_function(event);
97    }
98  });
99}
100
101function remove_delegated_event(event_type, ancestor_element, listener_function) {
102  ancestor_element.removeEventListener(event_type, listener_function);
103}
104
105// viewport visibility
106function viewportObserver(elm, handleIntersect) {
107  let observer;
108  let options = {};
109  observer = new IntersectionObserver(handleIntersect, options);
110  observer.observe(elm);
111  return observer;
112}
113
114// check for storage functionality
115function storageAvailable(type) {
116  let storage;
117  try {
118    storage = window[type];
119    const x = '__storage_test__';
120    storage.setItem(x, x);
121    storage.removeItem(x);
122    return true;
123  } catch (e) {
124    return (
125      e instanceof DOMException &&
126      // everything except Firefox
127      (e.code === 22 ||
128        // Firefox
129        e.code === 1014 ||
130        // test name field too, because code might not be present
131        // everything except Firefox
132        e.name === 'QuotaExceededError' ||
133        // Firefox
134        e.name === 'NS_ERROR_DOM_QUOTA_REACHED') &&
135      // acknowledge QuotaExceededError only if there's something already stored
136      storage &&
137      storage.length !== 0
138    );
139  }
140}
141
142// handle local storage
143function setLocalStorage(key, val) {
144  document.body.classList.toggle(key, val);
145  if (storageAvailable('localStorage')) {
146    localStorage.setItem(key, JSON.stringify(val));
147  }
148}

149function getLocalStorage(key) {
150  if (storageAvailable('localStorage')) {
151    return JSON.parse(localStorage.getItem(key));
152  }
153}
154
155// change button state to loading
156function btnLoading(btn) {
157  let orig = btn.innerHTML;
158  window.requestAnimationFrame(function () {
159    btn.innerHTML = '<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span> Loading...';
160    btn.dataset.orig = orig;
161    btn.setAttribute('disabled', '');
162  });
163}
164
165// revert button state to original
166function btnLoaded(btn) {
167  let orig = btn.dataset.orig;
168  window.requestAnimationFrame(function () {
169    btn.innerHTML = orig;
170    btn.removeAttribute('disabled');
171  });
172}
173
174// equal height elements
175function sameHeights(selector) {
176  const nodes = [...document.querySelectorAll(selector)];
177  let tallest = Math.max.apply(
178    Math,
179    nodes.map(function (elem, index) {
180      elem.style.minHeight = ''; // clean first
181      return elem.offsetHeight;
182    })
183  );
184  nodes.forEach(function (node, index, arr) {
185    node.style.height = tallest + 'px';
186  });
187}