CommonUtils

通用工具

Mint 2020.03.16.. Lásd a legutóbbi verzió

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/**
 * 将Date转化为指定格式的String.
 * 年(y)可以用 1-4 个占位符,
 * 月(M)、日(d)、小时(H)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符,
 * 毫秒(S)只能用 1 个占位符(是 1-3 位的数字)
 * 例子:
 * format("yyyy-MM-dd hh:mm:ss.S", new Date()) ==> 2006-07-02 08:09:04.423
 * format("yyyy-M-d h:m:s.S", new Date())      ==> 2006-7-2 8:9:4.182
 * @param {String} fmt fotmat 格式字符串.
 * @param {Date} date Date object.
 */
function format (fmt, date) {
  var ret;
  var opt = {
    "y+": date.getFullYear().toString(),
    "M+": (date.getMonth() + 1).toString(),
    "d+": date.getDate().toString(),
    "H+": date.getHours().toString(),
    "m+": date.getMinutes().toString(),
    "s+": date.getSeconds().toString(), //秒
    "q+": (Math.floor((date.getMonth() + 3) / 3)).toString(), //季度
    "S": date.getMilliseconds().toString() //毫秒
    // 有其他格式化字符需求可以继续添加,必须转化成字符串
  };
  for (var k in opt) {
    ret = new RegExp("(" + k + ")").exec(fmt);
    if (ret) {
      fmt = fmt.replace(ret[1], (ret[1].length == 1) ? (opt[k]) : (opt[k].padStart(ret[1].length, "0")))
    }
  }
  return fmt;
}