mirror of https://github.com/ElemeFE/element
311 lines
7.7 KiB
Markdown
311 lines
7.7 KiB
Markdown
## Notification
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Displays a global notification message at a corner of the page.
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### Basic usage
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:::demo Element has registered the `$notify` method and it receives an object as its parameter. In the simplest case, you can set the `title` field and the` message` field for the title and body of the notification. By default, the notification automatically closes after 4500ms, but by setting `duration` you can control its duration. Specifically, if set to `0`, it will not close automatically. Note that `duration` receives a `Number` in milliseconds.
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```html
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<template>
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<el-button
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plain
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@click="open">
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Closes automatically
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</el-button>
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<el-button
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plain
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@click="open2">
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Won't close automatically
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</el-button>
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</template>
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<script>
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export default {
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methods: {
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open() {
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const h = this.$createElement;
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this.$notify({
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title: 'Title',
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message: h('i', { style: 'color: teal' }, 'This is a reminder')
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});
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},
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open2() {
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this.$notify({
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title: 'Prompt',
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message: 'This is a message that does not automatically close',
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duration: 0
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});
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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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### With types
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We provide four types: success, warning, info and error.
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:::demo Element provides four notification types: `success`, `warning`, `info` and `error`. They are set by the `type` field, and other values will be ignored. We also registered methods for these types that can be invoked directly like `open5` and `open6` without passing a `type` field.
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```html
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<template>
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<el-button
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plain
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@click="open3">
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Success
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</el-button>
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<el-button
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plain
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@click="open4">
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Warning
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</el-button>
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<el-button
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plain
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@click="open5">
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Info
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</el-button>
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<el-button
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plain
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@click="open6">
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Error
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</el-button>
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</template>
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<script>
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export default {
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methods: {
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open3() {
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this.$notify({
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title: 'Success',
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message: 'This is a success message',
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type: 'success'
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});
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},
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open4() {
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this.$notify({
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title: 'Warning',
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message: 'This is a warning message',
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type: 'warning'
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});
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},
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open5() {
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this.$notify.info({
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title: 'Info',
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message: 'This is an info message'
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});
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},
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open6() {
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this.$notify.error({
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title: 'Error',
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message: 'This is an error message'
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});
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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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### Custom position
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Notification can emerge from any corner you like.
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:::demo The `position` attribute defines which corner Notification slides in. It can be `top-right`, `top-left`, `bottom-right` or `bottom-left`. Defaults to `top-right`.
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```html
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<template>
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<el-button
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plain
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@click="open7">
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Top Right
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</el-button>
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<el-button
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plain
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@click="open8">
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Bottom Right
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</el-button>
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<el-button
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plain
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@click="open9">
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Bottom Left
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</el-button>
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<el-button
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plain
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@click="open10">
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Top Left
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</el-button>
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</template>
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<script>
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export default {
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methods: {
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open7() {
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this.$notify({
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title: 'Custom Position',
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message: 'I\'m at the top right corner'
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});
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},
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open8() {
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this.$notify({
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title: 'Custom Position',
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message: 'I\'m at the bottom right corner',
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position: 'bottom-right'
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});
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},
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open9() {
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this.$notify({
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title: 'Custom Position',
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message: 'I\'m at the bottom left corner',
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position: 'bottom-left'
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});
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},
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open10() {
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this.$notify({
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title: 'Custom Position',
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message: 'I\'m at the top left corner',
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position: 'top-left'
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});
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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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### With offset
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Customize Notification's offset from the edge of the screen.
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:::demo Set the `offset` attribute to customize Notification's offset from the edge of the screen. Note that every Notification instance of the same moment should have the same offset.
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```html
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<template>
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<el-button
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plain
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@click="open11">
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Notification with offset
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</el-button>
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</template>
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<script>
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export default {
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methods: {
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open11() {
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this.$notify.success({
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title: 'Success',
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message: 'This is a success message',
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offset: 100
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});
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}
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}
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}
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</script>
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```
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:::
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### Use HTML string
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`message` supports HTML string.
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:::demo Set `dangerouslyUseHTMLString` to true and `message` will be treated as an HTML string.
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```html
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<template>
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<el-button
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plain
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@click="open12">
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Use HTML String
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</el-button>
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</template>
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<script>
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export default {
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methods: {
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open12() {
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this.$notify({
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title: 'HTML String',
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dangerouslyUseHTMLString: true,
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message: '<strong>This is <i>HTML</i> string</strong>'
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});
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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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:::warning
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Although `message` property supports HTML strings, dynamically rendering arbitrary HTML on your website can be very dangerous because it can easily lead to [XSS attacks](https://en.wikipedia.org/wiki/Cross-site_scripting). So when `dangerouslyUseHTMLString` is on, please make sure the content of `message` is trusted, and **never** assign `message` to user-provided content.
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:::
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### Hide close button
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It is possible to hide the close button
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:::demo Set the `showClose` attribute to `false` so the notification cannot be closed by the user.
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```html
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<template>
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<el-button
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plain
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@click="open13">
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Hide close button
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</el-button>
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</template>
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<script>
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export default {
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methods: {
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open13() {
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this.$notify.success({
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title: 'Info',
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message: 'This is a message without close button',
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showClose: false
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});
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}
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}
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}
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</script>
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```
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:::
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### Global method
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Element has added a global method `$notify` for Vue.prototype. So in a vue instance you can call `Notification` like what we did in this page.
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### Local import
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Import `Notification`:
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```javascript
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import { Notification } from 'element-ui';
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```
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In this case you should call `Notification(options)`. We have also registered methods for different types, e.g. `Notification.success(options)`. You can call `Notification.closeAll()` to manually close all the instances.
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### Options
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| Attribute | Description | Type | Accepted Values | Default |
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|---------- |-------------- |---------- |-------------------------------- |-------- |
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| title | title | string | — | — |
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| message | description text | string/Vue.VNode | — | — |
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| dangerouslyUseHTMLString | whether `message` is treated as HTML string | boolean | — | false |
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| type | notification type | string | success/warning/info/error | — |
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| iconClass | custom icon's class. It will be overridden by `type` | string | — | — |
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| customClass | custom class name for Notification | string | — | — |
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| duration | duration before close. It will not automatically close if set 0 | number | — | 4500 |
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| position | custom position | string | top-right/top-left/bottom-right/bottom-left | top-right |
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| showClose | whether to show a close button | boolean | — | true |
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| onClose | callback function when closed | function | — | — |
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| onClick | callback function when notification clicked | function | — | — |
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| offset | offset from the top edge of the screen. Every Notification instance of the same moment should have the same offset | number | — | 0 |
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### Methods
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`Notification` and `this.$notify` returns the current Notification instance. To manually close the instance, you can call `close` on it.
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| Method | Description |
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| close | close the Notification |
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