Vue 日期获取的示例代码

  import moment from 'moment';
 
  export default {
 
    data() {
      return {
        // 写在data中或者写在methods里面，一定要写不然会报错
        moment
      }
    },
 
    methods: {
      changeRecent(value) {
        // 开始日期
        moment(new Date()).format('YYYY-MM-DD')+' '+'23:59:59'  
        // 结束日期  value 3、7、30
        moment(new Date().getTime() - value * 1000 * 24 * 60 * 60).format('YYYY-MM-DD')+' '+'00:00:00');
      },
    }
  }

将当前时间格式化
dateFormat(time) {
let date = new Date(time);
let year = date.getFullYear();
let wk = date.getDay()

let month = date.getMonth() + 1 < 10 ? "0" + (date.getMonth() + 1) : date.getMonth() + 1;
let day = date.getDate() < 10 ? "0" + date.getDate() : date.getDate();
let hours = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
let minutes = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
let seconds = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
let weeks = ['星期日', '星期一', '星期二', '星期三', '星期四', '星期五', '星期六']
let week = weeks[wk]
// 拼接
return year + "年" + month + "月" + day + "日" + " " + hours + ":" + minutes + ":" + seconds + ' ' + week;
},
使用：this.newDate = this.dateFormat(new Date());
 
 
import moment from 'moment';
// 写在data中或者写在methods里面，一定要写不然会报错
moment,
// 获取当前月的开始结束时间
getCurrMonthDays() {
let obj = {
   starttime: '',
   endtime: ''
}
obj.starttime = moment(moment().month(moment().month()).startOf('month').valueOf()).format('YYYY-MM-DD HH:mm:ss');
obj.endtime = moment(moment().month(moment().month()).endOf('month').valueOf()).format('YYYY-MM-DD HH:mm:ss');
return obj
},
使用：console.log(this.getCurrMonthDays())

 moment().subtract(1, 'day').format('YYYY-MM-DD') //1，day就代表前一天

moment().subtract(1, 'month').format('YYYY-MM-DD')

 moment().subtract(1, 'year').format('YYYY-MM-DD')

<script>
    let a = getFMdate(0)
    let b = getFMdate(-1)
    let c = getFMdate(8)
    console.log(a, b, c)
 
    function getFMdate (number, separator) {
      let n = parseInt(number)
      let nd = new Date()
      let day = nd.getDate()
      let setd = new Date(nd.setDate(day + n))
      let ryear = setd.getFullYear()
      let rmonth = setd.getMonth() + 1
      let rday = setd.getDate()
      let frmonth, frday;
      // month day + '0'
      if (rmonth < 10) {
        frmonth = '0' + rmonth
      } else {
        frmonth = rmonth
      }
      if (rday < 10) {
        frday = '0' + rday
      } else {
        frday = rday
      }
      // separator
      let sep = separator ? separator : '-'
      return ryear + sep + frmonth + sep + frday
    }
  </script>

// 前一天
    beforeDay() {
      //前一天
      let beforeDay = new Date(
        new Date(this.alarmformSearch.date).getTime() - 24 * 60 * 60 * 1000
      ); //计算当前日期 -1
      this.alarmformSearch.date = this.convertToDate(beforeDay); //格式化日期并赋值
 
      this.getWarnInfo();
    },

// 前两天
    beforeTwoDay() {
      //前一天
      let beforeTwoDay = new Date(
        new Date(this.alarmformSearch.date).getTime() -
          24 * 60 * 60 * 1000 -
          24 * 60 * 60 * 1000
      ); //计算当前日期 -1
      this.alarmformSearch.date = this.convertToDate(beforeTwoDay); //格式化日期并赋值
 
      this.getWarnInfo();
    },

convertToDate(date) {
      var date = new Date(date);
      var y = date.getFullYear();
      var m = date.getMonth() + 1;
      var d = date.getDate();
      m = m < 10 ? "0" + m : m; //月小于10，加0
      d = d < 10 ? "0" + d : d; //day小于10，加0
      return y + "-" + m + "-" + d;
    },

<el-form-item
   label="创建时间"
   :label-width="formLabelWidth"
>
  <el-date-picker
    v-model="addForm.createDate"
    style="width:100%"
     type="datetime"
     placeholder="选择日期"
   />
</el-form-item>
//data里的数据
data(){
    addForm:{
        createDate:new Date() // 只需要在这里声明的时候直接值赋为 new Date()
    }
}
 
 
dingdKpData:"",
this.dingdKpData = [this.date_start,this.date_end]
 
 
getdate(){
		//年
		let year = new Date().getFullYear();
		//月份是从0月开始获取的，所以要+1;
		let month = new Date().getMonth() +1;
		//日
		let day = new Date().getDate();
		//时
		let hour = new Date().getHours();
		//分
		let minute = new Date().getMinutes();
		//秒
		let second = new Date().getSeconds();
		return year + '-' + month + '-' + day;
	},

<el-form-item label="收款日期" prop="collection_date">
<el-date-picker v-model="baseInfoObj.collection_date" size="small" type="date" placeholder="收款日期" format="yyyy-MM-dd" value-format="yyyy-MM-dd" style="width: 100%">
   </el-date-picker>
   </el-form-item>
 
 
this.baseInfoObj.collection_date = this.dateFormat('YYYY-mm-dd', new Date())
 
 
==>main.js
import { dateFormat } from './utils/day'
Vue.prototype.dateFormat = dateFormat
 
==>utils=>day.js
 
//获取当前日期     参数 "YYYY-mm-dd HH:MM:SS"  new Date()
export function dateFormat(fmt, date) {
    let ret;
    const opt = {
        "Y+": date.getFullYear().toString(),        // 年
        "m+": (date.getMonth() + 1).toString(),     // 月
        "d+": date.getDate().toString(),            // 日
        "H+": date.getHours().toString(),           // 时
        "M+": date.getMinutes().toString(),         // 分
        "S+": date.getSeconds().toString()          // 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 (let 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;
}