目录
- 前言
- 1. 基本知识
- 2. Demo
- 2.1 确认框
- 2.2 警告框
- 2.3 对话框
- 3. this.$confirm
前言
详细知识推荐阅读：详细分析Element Plus中的ElMessageBox弹窗用法（附Demo及模版）
MessageBox则常用于Vue2
1. 基本知识
MessageBox 是 Element UI 提供的一个全局方法，用于创建各种对话框，如消息提示、确认框和输入框
MessageBox 可以通过引入 MessageBox 组件来使用，也可以通过全局挂载的方式使用 this.$confirm 等快捷方法
常用的方法如下：
MessageBox.alert(message, title, options)：显示一个消息提示框MessageBox.confirm(message, title, options)：显示一个确认对话框MessageBox.prompt(message, title, options)：显示一个输入框
具体的参数说明如下：
message：对话框的内容，可以是字符串或 HTML 片段title：对话框的标题options：配置对象，用于定制对话框的行为和样式，包括以下常用选项：
confirmButtonText：确认按钮的文本
cancelButtonText：取消按钮的文本
type：消息类型（success, warning, info, error）
callback：按钮点击后的回调函数
dangerouslyUseHTMLString：是否将 message 作为 HTML 片段
对应的返回值如下：返回一个 Promise，点击确认按钮会 resolve，点击取消按钮会 reject
2. Demo
2.1 确认框
<template><div><el-button @click="handleDelete(1)">Delete Item 1</el-button><el-table :data="list"><el-table-column prop="name" label="Name"></el-table-column><el-table-column label="Actions"><template slot-scope="scope"><el-button @click="handleDelete(scope.row.id)" type="danger" size="small">Delete</el-button></template></el-table-column></el-table></div>
</template><script>
import { MessageBox, Message } from 'element-ui';export default {data() {return {list: [{ id: 1, name: 'Item 1' },{ id: 2, name: 'Item 2' },{ id: 3, name: 'Item 3' },],};},methods: {handleDelete(id) {MessageBox.confirm('Are you sure you want to delete this item?', 'Warning', {confirmButtonText: 'Yes',cancelButtonText: 'No',type: 'warning',}).then(() => {// Simulate an API call to delete the itemthis.list = this.list.filter(item => item.id !== id);Message({type: 'success',message: 'Item deleted successfully!',});}).catch(() => {Message({type: 'info',message: 'Deletion cancelled',});});},},
};
</script><style>
@import '~element-ui/lib/theme-chalk/index.css';
</style>
2.2 警告框
<template><div><el-button @click="showAlert">Show Alert</el-button></div>
</template><script>
import { MessageBox } from 'element-ui';export default {methods: {showAlert() {MessageBox.alert('This is a warning message', 'Warning', {confirmButtonText: 'OK',type: 'warning',});},},
};
</script><style>
@import '~element-ui/lib/theme-chalk/index.css';
</style>
2.3 对话框
<template><div><el-button @click="showPrompt">Show Prompt</el-button></div>
</template><script>
import { MessageBox } from 'element-ui';export default {methods: {showPrompt() {MessageBox.prompt('Please input your name', 'Prompt', {confirmButtonText: 'OK',cancelButtonText: 'Cancel',}).then(({ value }) => {this.$message({type: 'success',message: 'Your name is: ' + value,});}).catch(() => {this.$message({type: 'info',message: 'Input cancelled',});});},},
};
</script><style>
@import '~element-ui/lib/theme-chalk/index.css';
</style>
3. this.$confirm
在 Vue 2 中使用 Element UI 时，可以通过全局方法 this.$confirm 等快捷方式来调用这些对话框，以简化代码并提升开发效率
实际上它是 MessageBox.confirm 的一个封装
具体的Demo如下：
<template><div><el-button @click="handleDelete(1)">Delete Item 1</el-button><el-table :data="list"><el-table-column prop="name" label="Name"></el-table-column><el-table-column label="Actions"><template slot-scope="scope"><el-button @click="handleDelete(scope.row.id)" type="danger" size="small">Delete</el-button></template></el-table-column></el-table></div>
</template><script>
export default {data() {return {list: [{ id: 1, name: 'Item 1' },{ id: 2, name: 'Item 2' },{ id: 3, name: 'Item 3' },],};},methods: {handleDelete(id) {this.$confirm('Are you sure you want to delete this item?', 'Warning', {confirmButtonText: 'Yes',cancelButtonText: 'No',type: 'warning',}).then(() => {// Simulate an API call to delete the itemthis.list = this.list.filter(item => item.id !== id);this.$message({type: 'success',message: 'Item deleted successfully!',});}).catch(() => {this.$message({type: 'info',message: 'Deletion cancelled',});});},},
};
</script><style>
@import '~element-ui/lib/theme-chalk/index.css';
</style>
同步对比其差异：
<template><div><el-button @click="handleDelete(1)">Delete Item 1</el-button><el-table :data="list"><el-table-column prop="name" label="Name"></el-table-column><el-table-column label="Actions"><template slot-scope="scope"><el-button @click="handleDelete(scope.row.id)" type="danger" size="small">Delete</el-button></template></el-table-column></el-table></div>
</template><script>
import { MessageBox, Message } from 'element-ui';export default {data() {return {list: [{ id: 1, name: 'Item 1' },{ id: 2, name: 'Item 2' },{ id: 3, name: 'Item 3' },],};},methods: {handleDelete(id) {MessageBox.confirm('Are you sure you want to delete this item?', 'Warning', {confirmButtonText: 'Yes',cancelButtonText: 'No',type: 'warning',}).then(() => {// Simulate an API call to delete the itemthis.list = this.list.filter(item => item.id !== id);Message({type: 'success',message: 'Item deleted successfully!',});}).catch(() => {Message({type: 'info',message: 'Deletion cancelled',});});},},
};
</script><style>
@import '~element-ui/lib/theme-chalk/index.css';
</style>
实战中类似的截图如下：
