moment.js 是一個輕量級的 JavaScript 日期庫，用於解析，驗證，操作和格式化日期。

# 安裝
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npm install moment --save   # npm
yarn add moment             # Yarn
# 使用
  • Format Dates
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moment().format("MMMM Do YYYY, h:mm:ss a"); // October 21st 2019, 4:30:21 pm
moment().format("dddd"); // Monday
moment().format("MMM Do YY"); // Oct 21st 19
moment().format("YYYY [escaped] YYYY"); // 2019 escaped 2019
moment().format(); // 2019-10-21T16:30:21+08:00
  • Calendar Time
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moment().subtract(10, "days").calendar(); // 10/11/2019
moment().subtract(6, "days").calendar(); // Last Tuesday at 4:32 PM
moment().subtract(3, "days").calendar(); // Last Friday at 4:32 PM
moment().subtract(1, "days").calendar(); // Yesterday at 4:32 PM
moment().calendar(); // Today at 4:32 PM
moment().add(1, "days").calendar(); // Tomorrow at 4:32 PM
moment().add(3, "days").calendar(); // Thursday at 4:32 PM
moment().add(10, "days").calendar(); // 10/31/2019
# 搭配 vue.js + moment 完成時間快捷選項
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<template>
  <div class="block">
    <span class="demonstration">快捷選項</span>
    <el-date-picker
      v-model="dateRange"
      type="monthrange"
      align="right"
      unlink-panels
      range-separator="至"
      start-placeholder="開始月份"
      end-placeholder="結束月份"
      :picker-options="pickerOptions">
    </el-date-picker>
  </div>
</template>

<script>
export default {
  data: ()=> ({
    dateRange: [moment().startOf("month"), moment().endOf("month")],
    pickerOptions: {
      shortcuts: [
        {
          text: "最近一週",
          onClick(picker) {
            let start = moment().startOf("week");
            let end = moment().endOf("week");
            picker.$emit("pick", [start, end]);
          }
        },
        {
          text: "最近一個月",
          onClick(picker) {
            let start = moment().startOf("month");
            let end = moment().endOf("month");
            picker.$emit("pick", [start, end]);
          }
        },
        {
          text: "上一個月",
          onClick(picker) {
            let start = moment()
              .startOf("month")
              .subtract(1, "month");
            let end = moment()
              .endOf("month")
              .subtract(1, "month");
            picker.$emit("pick", [start, end]);
          }
        },
        {
          text: "最近三個月",
          onClick(picker) {
            let start = moment()
              .startOf("month")
              .subtract(2, "month");
            let end = moment().endOf("month");
            picker.$emit("pick", [start, end]);
          }
        }
      ]
    }
      }),
      watch: {
          dateRange:"changeRangeInfo"
      },
      methods: {
    changeSearchInfo(info) {
      const { dateRange } = this;
      const startAt = moment(dateRange[0]).format("YYYY-MM-DD, 00:00:00");
      const endAt = moment(dateRange[1]).format("YYYY-MM-DD, 23:59:59");
      console.log({startAt,endAt})
    }
      }
  };
</script>

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// 最近一週
{startAt: "2019-10-20, 00:00:00", endAt: "2019-10-26, 23:59:59"}
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// 最近一個月
{startAt: "2019-10-01, 00:00:00", endAt: "2019-10-31, 23:59:59"}
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// 上一個月
{startAt: "2019-09-01, 00:00:00", endAt: "2019-09-30, 23:59:59"}
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// 最近三個月
{startAt: "2019-08-01, 00:00:00", endAt: "2019-10-31, 23:59:59"}