2020-08-13 15:18:26 +08:00
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## Dialog 对话框
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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在保留当前页面状态的情况下,告知用户并承载相关操作。
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### 基本用法
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Dialog 弹出一个对话框,适合需要定制性更大的场景。
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2021-06-08 14:11:33 +08:00
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:::demo 需要设置 `model-value / v-model` 属性,它接收 `Boolean`,当为 `true` 时显示 Dialog。Dialog 分为两个部分:`body` 和 `footer`,`footer` 需要具名为 `footer` 的 `slot`。`title` 属性用于定义标题,它是可选的,默认值为空。最后,本例还展示了 `before-close` 的用法。
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2020-08-13 15:18:26 +08:00
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```html
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<el-button type="text" @click="dialogVisible = true">点击打开 Dialog</el-button>
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<el-dialog
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title="提示"
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2020-11-04 11:15:05 +08:00
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v-model="dialogVisible"
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2020-08-13 15:18:26 +08:00
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width="30%"
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2021-09-04 19:29:28 +08:00
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:before-close="handleClose"
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>
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2020-08-13 15:18:26 +08:00
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<span>这是一段信息</span>
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2020-11-04 11:15:05 +08:00
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<template #footer>
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<span class="dialog-footer">
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<el-button @click="dialogVisible = false">取 消</el-button>
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<el-button type="primary" @click="dialogVisible = false">确 定</el-button>
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</span>
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</template>
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2020-08-13 15:18:26 +08:00
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</el-dialog>
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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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2021-09-04 19:29:28 +08:00
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dialogVisible: false,
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}
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2020-08-13 15:18:26 +08:00
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},
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methods: {
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handleClose(done) {
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this.$confirm('确认关闭?')
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2021-09-04 19:29:28 +08:00
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.then((_) => {
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done()
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2020-08-13 15:18:26 +08:00
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})
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2021-09-04 19:29:28 +08:00
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.catch((_) => {})
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},
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},
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}
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2020-08-13 15:18:26 +08:00
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</script>
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2021-06-10 23:55:46 +08:00
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<!--
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<setup>
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import { defineComponent, ref } from 'vue';
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import { ElMessageBox } from 'element-plus';
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export default defineComponent({
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setup() {
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const dialogVisible = ref(false);
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const handleClose = (done) => {
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ElMessageBox
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.confirm('确认关闭?')
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.then((_) => {
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done();
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})
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.catch((_) => {
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// catch
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});
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};
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return {
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dialogVisible,
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handleClose,
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};
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},
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});
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</setup>
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-->
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2020-08-13 15:18:26 +08:00
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```
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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:::
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:::tip
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`before-close` 仅当用户通过点击关闭图标或遮罩关闭 Dialog 时起效。如果你在 `footer` 具名 slot 里添加了用于关闭 Dialog 的按钮,那么可以在按钮的点击回调函数里加入 `before-close` 的相关逻辑。
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:::
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### 自定义内容
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2020-10-16 11:14:34 +08:00
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Dialog 组件的内容可以是任意的,甚至可以是表格或表单,下面是应用了 Element Plus Table 和 Form 组件的两个样例。
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2020-08-13 15:18:26 +08:00
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:::demo
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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```html
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2021-09-04 19:29:28 +08:00
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<el-button type="text" @click="dialogTableVisible = true"
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>打开嵌套表格的 Dialog</el-button
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>
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2020-08-13 15:18:26 +08:00
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2020-11-23 09:47:23 +08:00
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<el-dialog title="收货地址" v-model="dialogTableVisible">
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2020-08-13 15:18:26 +08:00
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<el-table :data="gridData">
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<el-table-column property="date" label="日期" width="150"></el-table-column>
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<el-table-column property="name" label="姓名" width="200"></el-table-column>
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<el-table-column property="address" label="地址"></el-table-column>
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</el-table>
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</el-dialog>
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<!-- Form -->
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2021-09-04 19:29:28 +08:00
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<el-button type="text" @click="dialogFormVisible = true"
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>打开嵌套表单的 Dialog</el-button
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>
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2020-08-13 15:18:26 +08:00
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2020-11-23 09:47:23 +08:00
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<el-dialog title="收货地址" v-model="dialogFormVisible">
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2020-08-13 15:18:26 +08:00
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<el-form :model="form">
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<el-form-item label="活动名称" :label-width="formLabelWidth">
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<el-input v-model="form.name" autocomplete="off"></el-input>
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</el-form-item>
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<el-form-item label="活动区域" :label-width="formLabelWidth">
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<el-select v-model="form.region" placeholder="请选择活动区域">
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<el-option label="区域一" value="shanghai"></el-option>
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<el-option label="区域二" value="beijing"></el-option>
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</el-select>
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</el-form-item>
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</el-form>
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2020-11-23 09:47:23 +08:00
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<template #footer>
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<span class="dialog-footer">
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<el-button @click="dialogFormVisible = false">取 消</el-button>
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2021-09-04 19:29:28 +08:00
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<el-button type="primary" @click="dialogFormVisible = false"
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>确 定</el-button
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>
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2020-11-23 09:47:23 +08:00
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</span>
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</template>
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2020-08-13 15:18:26 +08:00
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</el-dialog>
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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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gridData: [
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{
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date: '2016-05-02',
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name: '王小虎',
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address: '上海市普陀区金沙江路 1518 弄',
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},
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{
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date: '2016-05-04',
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name: '王小虎',
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address: '上海市普陀区金沙江路 1518 弄',
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},
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{
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date: '2016-05-01',
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name: '王小虎',
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address: '上海市普陀区金沙江路 1518 弄',
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},
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{
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date: '2016-05-03',
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name: '王小虎',
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address: '上海市普陀区金沙江路 1518 弄',
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},
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],
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2020-08-13 15:18:26 +08:00
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dialogTableVisible: false,
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dialogFormVisible: false,
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form: {
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name: '',
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region: '',
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date1: '',
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date2: '',
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delivery: false,
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type: [],
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resource: '',
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desc: '',
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},
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formLabelWidth: '120px',
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}
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},
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}
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2020-08-13 15:18:26 +08:00
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</script>
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2021-06-10 23:55:46 +08:00
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<!--
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<setup>
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import { defineComponent, reactive, toRefs } from 'vue';
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export default defineComponent({
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setup() {
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const state = reactive({
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gridData: [
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{
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date: '2016-05-02',
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name: '王小虎',
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address: '上海市普陀区金沙江路 1518 弄',
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},
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{
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date: '2016-05-04',
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name: '王小虎',
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address: '上海市普陀区金沙江路 1518 弄',
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},
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{
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date: '2016-05-01',
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name: '王小虎',
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address: '上海市普陀区金沙江路 1518 弄',
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},
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{
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date: '2016-05-03',
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name: '王小虎',
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address: '上海市普陀区金沙江路 1518 弄',
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},
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],
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dialogTableVisible: false,
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dialogFormVisible: false,
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form: {
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name: '',
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region: '',
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date1: '',
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date2: '',
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delivery: false,
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type: [],
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resource: '',
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desc: '',
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},
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formLabelWidth: '120px',
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});
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return {
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...toRefs(state),
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};
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},
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});
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</setup>
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-->
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2020-08-13 15:18:26 +08:00
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```
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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:::
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### 嵌套的 Dialog
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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如果需要在一个 Dialog 内部嵌套另一个 Dialog,需要使用 `append-to-body` 属性。
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:::demo 正常情况下,我们不建议使用嵌套的 Dialog,如果需要在页面上同时显示多个 Dialog,可以将它们平级放置。对于确实需要嵌套 Dialog 的场景,我们提供了`append-to-body`属性。将内层 Dialog 的该属性设置为 true,它就会插入至 body 元素上,从而保证内外层 Dialog 和遮罩层级关系的正确。
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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```html
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<template>
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2021-09-04 19:29:28 +08:00
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<el-button type="text" @click="outerVisible = true"
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>点击打开外层 Dialog</el-button
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>
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2020-10-16 11:14:34 +08:00
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2020-11-23 09:47:23 +08:00
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<el-dialog title="外层 Dialog" v-model="outerVisible">
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2020-08-13 15:18:26 +08:00
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<el-dialog
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width="30%"
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title="内层 Dialog"
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2020-11-23 09:47:23 +08:00
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v-model="innerVisible"
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2021-09-04 19:29:28 +08:00
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append-to-body
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>
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2020-08-13 15:18:26 +08:00
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</el-dialog>
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2020-11-23 09:47:23 +08:00
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<template #footer>
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<div class="dialog-footer">
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<el-button @click="outerVisible = false">取 消</el-button>
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2021-09-04 19:29:28 +08:00
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<el-button type="primary" @click="innerVisible = true"
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>打开内层 Dialog</el-button
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>
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2020-11-23 09:47:23 +08:00
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</div>
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</template>
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2020-08-13 15:18:26 +08:00
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</el-dialog>
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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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outerVisible: false,
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2021-09-04 19:29:28 +08:00
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innerVisible: false,
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}
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},
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2020-08-13 15:18:26 +08:00
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}
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</script>
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2021-06-10 23:55:46 +08:00
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<!--
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<setup>
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import { defineComponent, ref } from 'vue';
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export default defineComponent({
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setup() {
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return {
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outerVisible: ref(false),
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innerVisible: ref(false),
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};
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},
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});
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</setup>
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-->
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2020-08-13 15:18:26 +08:00
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```
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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:::
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### 居中布局
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标题和底部可水平居中
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:::demo 将`center`设置为`true`即可使标题和底部居中。`center`仅影响标题和底部区域。Dialog 的内容是任意的,在一些情况下,内容并不适合居中布局。如果需要内容也水平居中,请自行为其添加 CSS。
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```html
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2021-09-04 19:29:28 +08:00
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<el-button type="text" @click="centerDialogVisible = true"
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>点击打开 Dialog</el-button
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>
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2020-08-13 15:18:26 +08:00
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2021-09-04 19:29:28 +08:00
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<el-dialog title="提示" v-model="centerDialogVisible" width="30%" center>
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2020-08-13 15:18:26 +08:00
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<span>需要注意的是内容是默认不居中的</span>
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2020-11-23 09:47:23 +08:00
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<template #footer>
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<span class="dialog-footer">
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<el-button @click="centerDialogVisible = false">取 消</el-button>
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2021-09-04 19:29:28 +08:00
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<el-button type="primary" @click="centerDialogVisible = false"
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>确 定</el-button
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>
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2020-11-23 09:47:23 +08:00
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</span>
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2020-12-07 00:13:05 +08:00
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</template>
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2020-08-13 15:18:26 +08:00
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</el-dialog>
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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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2021-09-04 19:29:28 +08:00
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centerDialogVisible: false,
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}
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},
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}
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2020-08-13 15:18:26 +08:00
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</script>
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2021-06-10 23:55:46 +08:00
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<!--
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<setup>
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import { defineComponent, ref } from 'vue';
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export default defineComponent({
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setup() {
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return {
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centerDialogVisible: ref(false),
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};
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},
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});
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</setup>
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-->
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2020-08-13 15:18:26 +08:00
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```
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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:::
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:::tip
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Dialog 的内容是懒渲染的,即在第一次被打开之前,传入的默认 slot 不会被渲染到 DOM 上。因此,如果需要执行 DOM 操作,或通过 `ref` 获取相应组件,请在 `open` 事件回调中进行。
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:::
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2020-12-07 00:13:05 +08:00
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### 关闭时销毁 DOM 内容
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2021-09-04 19:29:28 +08:00
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2020-12-07 00:13:05 +08:00
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可在 Dialog 没有显示时,销毁 Dialog 里的内容以达到减少 DOM 节点的作用
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:::demo 需要注意的是,当这个属性被启用时,Dialog 内并不会有任何的 DOM 节点存在,除了 `overlay` `header(如果有)` `footer(如果有)`
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```html
|
2021-09-04 19:29:28 +08:00
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<el-button type="text" @click="centerDialogVisible = true"
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>点击打开 Dialog</el-button
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>
|
2020-12-07 00:13:05 +08:00
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<el-dialog
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title="提示"
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v-model="centerDialogVisible"
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width="30%"
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destroy-on-close
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2021-09-04 19:29:28 +08:00
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center
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>
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2020-12-07 00:13:05 +08:00
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<span>需要注意在 Dialog 打开前是这条内容和下面的内容都是不会被渲染的</span>
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<strong>额外的内容</strong>
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<template #footer>
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<span class="dialog-footer">
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<el-button @click="centerDialogVisible = false">取 消</el-button>
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2021-09-04 19:29:28 +08:00
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<el-button type="primary" @click="centerDialogVisible = false"
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>确 定</el-button
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>
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2020-12-07 00:13:05 +08:00
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</span>
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</template>
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</el-dialog>
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<script>
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export default {
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data() {
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return {
|
2021-09-04 19:29:28 +08:00
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centerDialogVisible: false,
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}
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},
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}
|
2020-12-07 00:13:05 +08:00
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</script>
|
2021-06-10 23:55:46 +08:00
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<!--
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<setup>
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import { defineComponent, ref } from 'vue';
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export default defineComponent({
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setup() {
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return {
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centerDialogVisible: ref(false),
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};
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},
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});
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</setup>
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-->
|
2020-12-07 00:13:05 +08:00
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```
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2020-08-13 15:18:26 +08:00
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:::
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2020-12-09 18:23:15 +08:00
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:::tip
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当使用 `modal` = false 时,请一定保证 `Dialog` 的 `append-to-body` 属性为 **true**, 因为 `Dialog` 的定位是通过 `position: relative` 来定位的,当 `modal` 不存在当时候,如果不将 `Dialog` 插入到 `Document.Body` 下,则会根据当前的位置进行定位,会导致样式错乱
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:::
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|
2020-08-13 15:18:26 +08:00
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### Attributes
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2021-09-04 19:29:28 +08:00
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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| --------------------- | ---------------------------------------------------------------------------- | ------------------------------------ | ------ | ------ |
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| model-value / v-model | 是否显示 Dialog | boolean | — | — |
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| title | Dialog 的标题,也可通过具名 slot (见下表)传入 | string | — | — |
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| width | Dialog 的宽度 | string / number | — | 50% |
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| fullscreen | 是否为全屏 Dialog | boolean | — | false |
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| top | Dialog CSS 中的 margin-top 值 | string | — | 15vh |
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| modal | 是否需要遮罩层 | boolean | — | true |
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| append-to-body | Dialog 自身是否插入至 body 元素上。嵌套的 Dialog 必须指定该属性并赋值为 true | boolean | — | false |
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| lock-scroll | 是否在 Dialog 出现时将 body 滚动锁定 | boolean | — | true |
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| custom-class | Dialog 的自定义类名 | string | — | — |
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| open-delay | Dialog 打开的延时时间,单位毫秒 | number | — | 0 |
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| close-delay | Dialog 关闭的延时时间,单位毫秒 | number | — | 0 |
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| close-on-click-modal | 是否可以通过点击 modal 关闭 Dialog | boolean | — | true |
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| close-on-press-escape | 是否可以通过按下 ESC 关闭 Dialog | boolean | — | true |
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| show-close | 是否显示关闭按钮 | boolean | — | true |
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| before-close | 关闭前的回调,会暂停 Dialog 的关闭 | function(done),done 用于关闭 Dialog | — | — |
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| center | 是否对头部和底部采用居中布局 | boolean | — | false |
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| destroy-on-close | 关闭时销毁 Dialog 中的元素 | boolean | — | false |
|
2020-08-13 15:18:26 +08:00
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|
### Slot
|
2021-09-04 19:29:28 +08:00
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| name | 说明 |
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| ------ | ----------------------- |
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| — | Dialog 的内容 |
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| title | Dialog 标题区的内容 |
|
2020-08-13 15:18:26 +08:00
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| footer | Dialog 按钮操作区的内容 |
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|
### Events
|
2021-09-04 19:29:28 +08:00
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| 事件名称 | 说明 | 回调参数 |
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| -------- | --------------------------- | -------- |
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| open | Dialog 打开的回调 | — |
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| opened | Dialog 打开动画结束时的回调 | — |
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| close | Dialog 关闭的回调 | — |
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| closed | Dialog 关闭动画结束时的回调 | — |
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