element ui datePick时间日期一段时间，限制选择日期的范围_element ui日期选择器限制范围

 时间戳，一天

let oneDayTime = 86400000
function timeSec(type) {
  //86400000为一天时间戳
  let time = 86400000;
  switch (type) {
    case "1":
      time = oneDayTime*3;
      break;
    case "2":
      time = oneDayTime*31;
      break;
    case "3":
      time = oneDayTime*365;
      break;
    case "4":
      time = oneDayTime*365;
      break;
    default:
      break;
  }
  return time;
}

想限制只能选日期间隔为一年，联合选择器样式不好改，使用俩单独的

有两个办法限制

1.一个在外层使用form通过表单验证控制，出现错误提示（由于是两个单独的组件，触发验证的方式又为单个失去焦点，所以俩组件无法实时更新）

2.用datepick自带的属性disabledDate ，为pick-options中的函数，在js中绑定函数，通过控制区间禁选不符合条件的日期，触发方式在每次选择时间时，可以实时更新无错误提示

1.form实现

form-html 
 <el-form ref="queryForm" :model="queryParams" inline>
 
    <el-form-item
      prop="startDate"
      :rules="[
        { required: true, message: '请选择开始日期' },
        { validator: checkFinalPayTime, trigger: 'blur' },
      ]"
    >
      <el-date-picker
        v-model="queryParams.startDate"
        :clearable="false"
        type="date"
        :default-value="new Date()"
        :disabledDate="disabledStartDate"
        :value-format="YYYY - MM - DD"
        placeholder="开始时间"
      />
    </el-form-item>
    <el-form-item
      prop="endDate"
      :rules="[
        { required: true, message: '请选择开始日期' },
        { validator: checkFinalPayTime, trigger: 'blur' },
      ]"
    >
      <el-date-picker
        v-model="queryParams.endDate"
        :clearable="false"
        type="date"
        :disabledDate="disabledEndDate"
        :default-value="new Date()"
        :value-format="YYYY - MM - DD"
        placeholder="结束时间"
      />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" icon="Search" @click="search"> 查询 </el-button>
      <el-button icon="Refresh" @click="reset"> 重置 </el-button>
    </el-form-item>
  </el-form>

form-js
//form验证函数，触发后更改另一个验证错误不会消失
const checkFinalPayTime = (rule, value, callback) => {
  const startDate = new Date(proxy.queryParams.startDate).getTime();
  const endDate = new Date(proxy.queryParams.endDate).getTime();
  console.log(startDate, endDate);
  console.log(startDate + 31536000000 > endDate);
  if (startDate + 31536000000 < endDate) {
    return callback(new Error("起止日期不能超过一年"));
  } else {
    callback();
  }
};

2.代码实现

disabledDate-html
<el-form ref="queryForm" :model="queryParams" inline>
 
      <el-date-picker
        v-model="queryParams.startDate"
        :clearable="false"
        type="date"
        :default-value="new Date()"
        :disabledDate="disabledStartDate"
        :value-format="YYYY - MM - DD"
        placeholder="开始时间"
      />
 
      <el-date-picker
        v-model="queryParams.endDate"
        :clearable="false"
        type="date"
        :disabledDate="disabledEndDate"
        :default-value="new Date()"
        :value-format="YYYY - MM - DD"
        placeholder="结束时间"
      />
   
  </el-form>

 
disabledDate-js
const disabledStartDate = (time) => {
  const endDate = new Date(proxy.queryParams.endDate);
  //该函数会遍历整个页，time为该选择页中日期的时间，
  //当return为false表示该日期可选,true则为不可选
  
  return (
    time.getTime() < endDate.getTime() - 31536000000 ||
    time.getTime() > endDate.getTime()
  );
};
const disabledEndDate = (time) => {
  const startDate = new Date(proxy.queryParams.startDate);
  //该函数会遍历整个页，time为该选择页中日期的时间，
  //当return为false表示该日期可选,true则为不可选
  
  return (
    time.getTime() > startDate.getTime() + 31536000000 ||
    time.getTime() < startDate.getTime()
  );
};