直接上代码,然后示例
function formatDate(time, fmt) {
let date = new Date(time);
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);
};
function formatMonthDay(time) {
return formatDate(time, "MM月dd日");
}
function formatMinuteSecond(time) {
return formatDate(time, "mm:ss");
}
formatMonthDay,formatMinuteSecond是基于formatDate做的封装
console.log(formatMonthDay(4066600000))
console.log(formatMinuteSecond(4066600000))
console.log(formatDate(100000, "mm:ss"))
console.log(formatDate(1000,"MM月dd日"))

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