使用正则表达式 / Javascript 转换日期格式 [重复]

Question

我有以下格式的日期数据

2020-10-07 05:21:15。

我想将其转换为 Wed,7 Oct'20 -05:21pm。

我尝试了正则表达式

(new Date(2020-10-07 05:21:15)).toString().replace(/\S+\s(\S+)\s(\d+)\s(\d+)\s.*/,'$1 $2,$3')

但我得到了输出Oct7,2020,

谁能帮我用javascript或正则表达式格式化它。

Answer 1

试试这个

const date = new Date();

// First option

const time = new Intl.DateTimeFormat('en', { hour: '2-digit', minute: '2-digit', }).format(date);
const dayWord = new Intl.DateTimeFormat('en', { weekday: 'short' }).format(date);
const dayNumber = new Intl.DateTimeFormat('en', { day: 'numeric' }).format(date);
const month = new Intl.DateTimeFormat('en', { month: 'short' }).format(date);
const year = new Intl.DateTimeFormat('en', { year: '2-digit' }).format(date);
console.log(`${dayWord},${dayNumber} ${month}'${year} -${time}`);

// Second option with format to parts method

const formatter = new Intl.DateTimeFormat('en', {
  year: '2-digit',
  day: 'numeric',
  month: 'short',
  weekday: 'short',
  hour: '2-digit', 
  minute: '2-digit'
}).formatToParts(date);

var customDateString = `${formatter[0].value},${formatter[4].value} ${formatter[2].value}'${formatter[6].value} -${formatter[8].value}:${formatter[10].value}${formatter[12].value.toLowerCase()}`;

console.log(customDateString);