-
Notifications
You must be signed in to change notification settings - Fork 0
/
sessionStorage.js
61 lines (57 loc) · 2.01 KB
/
sessionStorage.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
/*
Detecting storage function provided by MDN
https://developer.mozilla.org/en-US/docs/Web/API/Web_Storage_API/Using_the_Web_Storage_API
Returns true is there is storage available to use
*/
function storageAvailable(type) {
let storage;
try {
storage = window[type];
const x = '__storage_test__';
storage.setItem(x, x);
storage.removeItem(x);
return true;
} catch (e) {
return e instanceof DOMException && (
// everything except Firefox
e.code === 22 // Firefox
|| e.code === 1014 // test name field too, because code might not be present
// everything except Firefox
|| e.name === 'QuotaExceededError' // Firefox
|| e.name === 'NS_ERROR_DOM_QUOTA_REACHED')// acknowledge QuotaExceededError only if there's something already stored
&& (storage && storage.length !== 0);
}
}
const isLocalStorageAvilable = storageAvailable('localStorage');
const storageType = localStorage;
let formData = {};
function saveToLocalStorage(key, value) {
formData[key] = value;
if (isLocalStorageAvilable) {
storageType.setItem('formData', JSON.stringify(formData));
}
}
function getValueFromStorage(key) {
if (isLocalStorageAvilable) {
const data = storageType.getItem('formData');
if (data) {
formData = JSON.parse(data);
return formData[key] ? formData[key] : '';
}
}
return '';
}
window.addEventListener('load', () => {
document.getElementById('name').value = getValueFromStorage('nameFormData');
document.getElementById('email').value = getValueFromStorage('emailFormData');
document.getElementById('comment').value = getValueFromStorage('commentsFormData');
});
document.getElementById('name').addEventListener('input', (e) => {
saveToLocalStorage('nameFormData', e.target.value);
});
document.getElementById('email').addEventListener('input', (e) => {
saveToLocalStorage('emailFormData', e.target.value);
});
document.getElementById('comment').addEventListener('input', (e) => {
saveToLocalStorage('commentsFormData', e.target.value);
});