moment 기본

1. basic date format

const date = moment().format();
// date = 2020-06-14T13:17:32+09:00

2. custom date format

const basicDate = '2020-06-14T13:17:32+09:00'
const date1 = moment(basicDate).format('YYYY-MM-DD');
// date1 = 2020-06-14
const date2 = moment(basicDate).format('LL');
// date2 = June 14, 2020

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3. time ago

const basicDate = '2020-06-14T13:17:32+09:00'
const timeAgo = moment(basicDate).fromNow();
// timeAgo = 5 minutes ago