45 lines
1.1 KiB
TypeScript
45 lines
1.1 KiB
TypeScript
function supportsLocalStorage(): boolean {
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try {
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if (!localStorage) return false;
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else return true;
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// May only need the above simple test
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// - old versions of firefox may cause problem?
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// return 'localStorage' in window && window['localStorage']!==null;
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} catch (e) {
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return false;
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}
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}
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let _LocalStorage: {};
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if (supportsLocalStorage())
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_LocalStorage = {
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set: function (i: string, v: any) {
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if (typeof v === 'object') localStorage[i] = JSON.stringify(v);
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else localStorage[i] = v;
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},
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get: function (i: string) {
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return localStorage[i];
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},
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exists: function (i: string) {
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return !(typeof localStorage[i] === 'undefined');
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}
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};
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else
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_LocalStorage = {
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save: function (i: string, v: any) {
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document.cookie = `${i}=${encodeURIComponent(v)}`;
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},
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load: function (i: string) {
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let s = `; ${document.cookie};`,
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p = s.indexOf(`; ${i}=`);
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if (p < 0) return '';
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p = p + i.length + 3;
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const p2 = s.indexOf(';', p + 1);
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return decodeURIComponent(s.substring(p, p2));
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}
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};
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export let LocalStorage = _LocalStorage;
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