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需求

对 el-date-picker控件做出判断控制

分析

给 el-date-picker 组件添加 picker-options 属性，并绑定对应数据 pickerOptions

• html

<el-form-item label="雨量年份：" prop="date"><el-date-picker v-model="rainFall.form.date" type="year" format="yyyy" value-format="yyyy"placeholder="请选择年份" :picker-options="pickerOptions" />
</el-form-item>

• js

 data () {return {pickerOptions: {disabledDate (time) {return time.getTime() > Date.now() - 8.64e6}}}
}

扩展

1. 单个选择框的限制
   

• 设置选择今天及最近一年内的日期（包括今天）

data(){return {pickerOptions: {disabledDate(time) {let curDate = (new Date()).toString() // 当前时间戳转为字符串let curDateYear = (new Date()).getFullYear() // 当前时间的年份let oneYearAgoDate = curDate.replace(curDateYear,curDateYear-1)// 字符串年份替换为一年前let oneYear = new Date(oneYearAgoDate).getTime() //一年前字符串转为时间戳return time.getTime() > Date.now() || time.getTime() < oneYear;}}} 
}   

• 设置选择今天及今天以后的日期

data (){return {pickerOptions0: {disabledDate(time) {return time.getTime() < Date.now() - 8.64e7;}}}   
}

• 设置选择今天及今天以前的日期

data (){return {pickerOptions0: {disabledDate(time) {return time.getTime() > Date.now() - 8.64e6}}}   
}

• 设置选择今天之后的日期（不能选择当天时间）

data (){return {pickerOptions0: {disabledDate(time) {return time.getTime() < Date.now();}}}    
}

• 设置选择今天之前的日期（不能选择当天）

data (){return {pickerOptions0: {disabledDate(time) {return time.getTime() > Date.now();}}}    
}

• 设置选择三个月之前到今天的日期

data (){return {pickerOptions0: {disabledDate(time) {let curDate = (new Date()).getTime();let three = 90 * 24 * 3600 * 1000;let threeMonths = curDate - three;return time.getTime() > Date.now() || time.getTime() < threeMonths;;}}}   
}

2. 两个输入框的限制
   　　

• 设置开始时间不能大于结束时间（且只能选择当前时间以前的日期）

data(){return {pickerOptions0: {disabledDate: (time) => {if (this.value2) {return time.getTime() > Date.now() || time.getTime() > this.value2;} else {return time.getTime() > Date.now();}}},pickerOptions1: {disabledDate: (time) => {return time.getTime() < this.value1 || time.getTime() > Date.now();}}}    
}

• 设置开始时间不能大于结束时间（能选择所有日期）

data(){return {pickerOptions0: {disabledDate: (time) => {if (this.value2) {return time.getTime() > this.searchForm.endTime}}},pickerOptions1: {disabledDate: (time) => {return time.getTime() < this.searchForm.startTime}}}    
}