439 lines
14 KiB
Markdown
439 lines
14 KiB
Markdown
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## DatePicker 日期选择器
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用于选择或输入日期
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### 选择日
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以「日」为基本单位，基础的日期选择控件
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:::demo 基本单位由`type`属性指定。快捷选项需配置`picker-options`对象中的`shortcuts`，禁用日期通过 `disabledDate` 设置，传入函数
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```html
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<template>
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<div class="block">
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<span class="demonstration">默认</span>
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<el-date-picker
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v-model="value1"
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type="date"
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placeholder="选择日期">
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</el-date-picker>
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</div>
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<div class="block">
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<span class="demonstration">带快捷选项</span>
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<el-date-picker
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v-model="value2"
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align="right"
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type="date"
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placeholder="选择日期"
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:picker-options="pickerOptions">
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</el-date-picker>
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</div>
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</template>
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<script>
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export default {
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data() {
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return {
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pickerOptions: {
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disabledDate(time) {
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return time.getTime() > Date.now();
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},
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shortcuts: [{
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text: '今天',
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onClick(picker) {
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picker.$emit('pick', new Date());
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}
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}, {
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text: '昨天',
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onClick(picker) {
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const date = new Date();
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date.setTime(date.getTime() - 3600 * 1000 * 24);
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picker.$emit('pick', date);
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}
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}, {
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text: '一周前',
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onClick(picker) {
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const date = new Date();
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date.setTime(date.getTime() - 3600 * 1000 * 24 * 7);
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picker.$emit('pick', date);
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}
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}]
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},
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value1: '',
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value2: '',
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};
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}
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};
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</script>
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```
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:::
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### 其他日期单位
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通过扩展基础的日期选择，可以选择周、月、年或多个日期
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:::demo
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```html
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<div class="container">
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<div class="block">
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<span class="demonstration">周</span>
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<el-date-picker
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v-model="value1"
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type="week"
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format="yyyy 第 WW 周"
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placeholder="选择周">
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</el-date-picker>
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</div>
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<div class="block">
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<span class="demonstration">月</span>
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<el-date-picker
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v-model="value2"
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type="month"
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placeholder="选择月">
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</el-date-picker>
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</div>
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</div>
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<div class="container">
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<div class="block">
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<span class="demonstration">年</span>
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<el-date-picker
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v-model="value3"
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type="year"
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placeholder="选择年">
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</el-date-picker>
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</div>
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<div class="block">
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<span class="demonstration">多个日期</span>
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<el-date-picker
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type="dates"
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v-model="value4"
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placeholder="选择一个或多个日期">
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</el-date-picker>
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</div>
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</div>
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<script>
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export default {
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data() {
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return {
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value1: '',
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value2: '',
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value3: '',
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value4: ''
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};
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}
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};
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</script>
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```
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:::
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### 选择日期范围
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可在一个选择器中便捷地选择一个时间范围
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:::demo 在选择日期范围时，默认情况下左右面板会联动。如果希望两个面板各自独立切换当前月份，可以使用`unlink-panels`属性解除联动。
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```html
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<template>
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<div class="block">
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<span class="demonstration">默认</span>
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<el-date-picker
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v-model="value1"
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type="daterange"
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range-separator="至"
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start-placeholder="开始日期"
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end-placeholder="结束日期">
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</el-date-picker>
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</div>
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<div class="block">
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<span class="demonstration">带快捷选项</span>
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<el-date-picker
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v-model="value2"
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type="daterange"
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align="right"
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unlink-panels
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range-separator="至"
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start-placeholder="开始日期"
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end-placeholder="结束日期"
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:picker-options="pickerOptions">
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</el-date-picker>
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</div>
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</template>
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<script>
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export default {
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data() {
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return {
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pickerOptions: {
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shortcuts: [{
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text: '最近一周',
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onClick(picker) {
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const end = new Date();
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const start = new Date();
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start.setTime(start.getTime() - 3600 * 1000 * 24 * 7);
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picker.$emit('pick', [start, end]);
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}
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}, {
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text: '最近一个月',
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onClick(picker) {
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const end = new Date();
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const start = new Date();
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start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
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picker.$emit('pick', [start, end]);
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}
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}, {
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text: '最近三个月',
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onClick(picker) {
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const end = new Date();
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const start = new Date();
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start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
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picker.$emit('pick', [start, end]);
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}
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}]
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},
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value1: '',
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value2: ''
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};
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}
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};
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</script>
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```
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:::
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### 选择月份范围
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可在一个选择器中便捷地选择一个月份范围
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:::demo 在选择月份范围时，默认情况下左右面板会联动。如果希望两个面板各自独立切换当前年份，可以使用`unlink-panels`属性解除联动。
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```html
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<template>
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<div class="block">
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<span class="demonstration">默认</span>
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<el-date-picker
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v-model="value1"
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type="monthrange"
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range-separator="至"
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start-placeholder="开始月份"
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end-placeholder="结束月份">
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</el-date-picker>
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</div>
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<div class="block">
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<span class="demonstration">带快捷选项</span>
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<el-date-picker
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v-model="value2"
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type="monthrange"
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align="right"
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unlink-panels
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range-separator="至"
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start-placeholder="开始月份"
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end-placeholder="结束月份"
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:picker-options="pickerOptions">
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</el-date-picker>
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</div>
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</template>
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<script>
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export default {
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data() {
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return {
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pickerOptions: {
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shortcuts: [{
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text: '本月',
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onClick(picker) {
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picker.$emit('pick', [new Date(), new Date()]);
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}
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}, {
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text: '今年至今',
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onClick(picker) {
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const end = new Date();
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const start = new Date(new Date().getFullYear(), 0);
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picker.$emit('pick', [start, end]);
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}
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}, {
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text: '最近六个月',
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onClick(picker) {
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const end = new Date();
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const start = new Date();
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start.setMonth(start.getMonth() - 6);
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picker.$emit('pick', [start, end]);
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}
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}]
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},
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value1: '',
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value2: ''
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};
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}
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};
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</script>
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```
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:::
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### 日期格式
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使用`format`指定输入框的格式；使用`value-format`指定绑定值的格式。
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默认情况下，组件接受并返回`Date`对象。以下为可用的格式化字串，以 UTC 2017年1月2日 03:04:05 为例：
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:::warning
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请注意大小写
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:::
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| 格式 | 含义 | 备注 | 举例 |
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|------|------|------|------|------|
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| `yyyy` | 年 | | 2017 |
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| `M` | 月 | 不补0 | 1 |
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| `MM` | 月 | | 01 |
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| `W` | 周 | 仅周选择器的 `format` 可用；不补0 | 1 |
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| `WW` | 周 | 仅周选择器的 `format` 可用 | 01 |
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| `d` | 日 | 不补0 | 2 |
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| `dd` | 日 | | 02 |
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| `H` | 小时 | 24小时制；不补0 | 3 |
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| `HH` | 小时 | 24小时制 | 03 |
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| `h` | 小时 | 12小时制，须和 `A` 或 `a` 使用；不补0 | 3 |
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| `hh` | 小时 | 12小时制，须和 `A` 或 `a` 使用 | 03 |
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| `m` | 分钟 | 不补0 | 4 |
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| `mm` | 分钟 | | 04 |
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| `s` | 秒 | 不补0 | 5 |
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| `ss` | 秒 | | 05 |
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| `A` | AM/PM | 仅 `format` 可用，大写 | AM |
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| `a` | am/pm | 仅 `format` 可用，小写 | am |
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| `timestamp` | JS时间戳 | 仅 `value-format` 可用；组件绑定值为`number`类型 | 1483326245000 |
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| `[MM]` | 不需要格式化字符 | 使用方括号标识不需要格式化的字符 (如 [A] [MM]) | MM |
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:::demo
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```html
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<template>
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<div class="block">
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<span class="demonstration">默认为 Date 对象</span>
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<div class="demonstration">值：{{ value1 }}</div>
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<el-date-picker
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v-model="value1"
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type="date"
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placeholder="选择日期"
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format="yyyy 年 MM 月 dd 日">
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</el-date-picker>
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</div>
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<div class="block">
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<span class="demonstration">使用 value-format</span>
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<div class="demonstration">值：{{ value2 }}</div>
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<el-date-picker
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v-model="value2"
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type="date"
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placeholder="选择日期"
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format="yyyy 年 MM 月 dd 日"
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value-format="yyyy-MM-dd">
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</el-date-picker>
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</div>
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<div class="block">
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<span class="demonstration">时间戳</span>
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<div class="demonstration">值：{{ value3 }}</div>
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<el-date-picker
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v-model="value3"
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type="date"
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placeholder="选择日期"
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format="yyyy 年 MM 月 dd 日"
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value-format="timestamp">
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</el-date-picker>
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</div>
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</template>
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<script>
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export default {
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data() {
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return {
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value1: '',
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value2: '',
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value3: ''
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};
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}
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};
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</script>
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```
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:::
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### 默认显示日期
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在选择日期范围时，指定起始日期和结束日期的默认时刻。
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|||
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:::demo 选择日期范围时，默认情况下，起始日期和结束日期的时间部分均为当天的 0 点 0 分 0 秒。通过`default-time`可以分别指定二者的具体时刻。`default-time`接受一个数组，其中的值为形如`12:00:00`的字符串，第一个值控制起始日期的时刻，第二个值控制结束日期的时刻。
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```html
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<template>
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<div class="block">
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<p>组件值：{{ value }}</p>
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<el-date-picker
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v-model="value"
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type="daterange"
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start-placeholder="开始日期"
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end-placeholder="结束日期"
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:default-time="['00:00:00', '23:59:59']">
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</el-date-picker>
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</div>
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</template>
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<script>
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export default {
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data() {
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return {
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value: ''
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};
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}
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};
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</script>
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```
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:::
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### Attributes
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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|---------- |-------------- |---------- |-------------------------------- |-------- |
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| value / v-model | 绑定值 | date(DatePicker) / array(DateRangePicker) | — | — |
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| readonly | 完全只读 | boolean | — | false |
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| disabled | 禁用 | boolean | — | false |
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| editable | 文本框可输入 | boolean | — | true |
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| clearable | 是否显示清除按钮 | boolean | — | true |
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| size | 输入框尺寸 | string | large, small, mini | — |
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| placeholder | 非范围选择时的占位内容 | string | — | — |
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| start-placeholder | 范围选择时开始日期的占位内容 | string | — | — |
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| end-placeholder | 范围选择时结束日期的占位内容 | string | — | — |
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| type | 显示类型 | string | year/month/date/dates/ week/datetime/datetimerange/ daterange/monthrange | date |
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| format | 显示在输入框中的格式 | string | 见[日期格式](#/zh-CN/component/date-picker#ri-qi-ge-shi) | yyyy-MM-dd |
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| align | 对齐方式 | string | left, center, right | left |
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| popper-class | DatePicker 下拉框的类名 | string | — | — |
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| picker-options | 当前时间日期选择器特有的选项参考下表 | object | — | {} |
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| range-separator | 选择范围时的分隔符 | string | — | '-' |
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| default-value | 可选，选择器打开时默认显示的时间 | Date | 可被`new Date()`解析 | — |
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| default-time | 范围选择时选中日期所使用的当日内具体时刻 | string[] | 数组，长度为 2，每项值为字符串，形如`12:00:00`，第一项指定开始日期的时刻，第二项指定结束日期的时刻，不指定会使用时刻 `00:00:00` | — |
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| value-format | 可选，绑定值的格式。不指定则绑定值为 Date 对象 | string | 见[日期格式](#/zh-CN/component/date-picker#ri-qi-ge-shi) | — |
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| name | 原生属性 | string | — | — |
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| unlink-panels | 在范围选择器里取消两个日期面板之间的联动 | boolean | — | false |
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| prefix-icon | 自定义头部图标的类名 | string | — | el-icon-date |
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| clear-icon | 自定义清空图标的类名 | string | — | el-icon-circle-close |
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| validate-event | 输入时是否触发表单的校验 | boolean | - | true |
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### Picker Options
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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|---------- |-------------- |---------- |-------------------------------- |-------- |
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| shortcuts | 设置快捷选项，需要传入 { text, onClick } 对象用法参考 demo 或下表 | Object[] | — | — |
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| disabledDate | 设置禁用状态，参数为当前日期，要求返回 Boolean | Function | — | — |
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| cellClassName | 设置日期的 className | Function(Date) | — | — |
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| firstDayOfWeek | 周起始日 | Number | 1 到 7 | 7 |
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| onPick | 选中日期后会执行的回调，只有当 `daterange` 或 `datetimerange` 才生效 | Function({ maxDate, minDate }) | — | — |
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### Shortcuts
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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|---------- |-------------- |---------- |-------------------------------- |-------- |
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| text | 标题文本 | string | — | — |
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| onClick | 选中后的回调函数，参数是 vm，可通过触发 'pick' 事件设置选择器的值。例如 vm.$emit('pick', new Date()) | function | — | — |
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### Events
|
|||
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| 事件名称 | 说明 | 回调参数 |
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|||
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|---------|--------|---------|
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| change | 用户确认选定的值时触发 | 组件绑定值。格式与绑定值一致，可受 `value-format` 控制 |
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| blur | 当 input 失去焦点时触发 | 组件实例 |
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| focus | 当 input 获得焦点时触发 | 组件实例 |
|
|||
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|
### Methods
|
|||
|
|
| 方法名 | 说明 | 参数 |
|
|||
|
|
| ---- | ---- | ---- |
|
|||
|
|
| focus | 使 input 获取焦点 | — |
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