javascript format

Date object to get the local time format

new Date().toLocaleDateString('ZH-CN')

format

function formatDate (dataStr, fmt) {
    const date = new Date(dataStr.replace(/-/g, "/"))
    if (/(y+)/.test(fmt)) {
        fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))
    }
    let o = {
        'M+': date.getMonth() + 1,
        'd+': date.getDate(),
        'h+': date.getHours(),
        'm+': date.getMinutes(),
        's+': date.getSeconds()
    }
    for (let k in o) {
        if (new RegExp(`(${k})`).test(fmt)) {
        let str = o[k] + ''
        fmt = fmt.replace(RegExp.$1, RegExp.$1.length === 1 ? str : padLeftZero(str))
        }
    }
    return fmt
}
function padLeftZero (str) {
    return ('00' + str).substr(str.length)
}

const date = new Date();
const moment = date.getFullYear() + '-' + (date.getMonth()+1) + '-' + date.getDate();
formatDate(moment, 'yyyy/MM/dd')