前端格式化拼接时间字符串

let dateStr = this.dateFormat();
this.formData1.mesOrderNum = "SD" + dateStr;

// 时间格式化
dateFormat() {
  var date = new Date();
  var year = date.getFullYear();

  var month =
    date.getMonth() + 1 < 10
      ? "0" + (date.getMonth() + 1)
      : date.getMonth() + 1;
  var day = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
  var hours =
    date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
  var minutes =
    date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
  var seconds =
    date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
  // 拼接 时间格式处理
  return year + month + day + hours + minutes + seconds;
},