## Notification

Displays a global notification message at a corner of the page.

### Basic usage

:::demo Element Plus 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.

```html
<template>
  <el-button plain @click="open1"> Closes automatically </el-button>
  <el-button plain @click="open2"> Won't close automatically </el-button>
</template>

<script>
  import { h } from 'vue'

  export default {
    methods: {
      open1() {
        this.$notify({
          title: 'Title',
          message: h('i', { style: 'color: teal' }, 'This is a reminder'),
        })
      },

      open2() {
        this.$notify({
          title: 'Prompt',
          message: 'This is a message that does not automatically close',
          duration: 0,
        })
      },
    },
  }
</script>
<!--
<setup>

  import { defineComponent, h } from 'vue';
  import { ElNotification } from 'element-plus';

  export default defineComponent({
    setup() {
      
      const open1 = () => {
        ElNotification({
          title: 'Title',
          message: h('i', { style: 'color: teal' }, 'This is a reminder')
        });
      };

      const open2 = () => {
        ElNotification({
          title: 'Prompt',
          message: 'This is a message that does not automatically close',
          duration: 0
        });
      };
      return {
        open1,
        open2,
      };
    },
  });

</setup>
-->
```

:::

### With types

We provide four types: success, warning, info and error.

:::demo Element Plus 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 `open3` and `open4` without passing a `type` field.

```html
<template>
  <el-button plain @click="open1"> Success </el-button>
  <el-button plain @click="open2"> Warning </el-button>
  <el-button plain @click="open3"> Info </el-button>
  <el-button plain @click="open4"> Error </el-button>
</template>

<script>
  export default {
    methods: {
      open1() {
        this.$notify({
          title: 'Success',
          message: 'This is a success message',
          type: 'success',
        })
      },

      open2() {
        this.$notify({
          title: 'Warning',
          message: 'This is a warning message',
          type: 'warning',
        })
      },

      open3() {
        this.$notify.info({
          title: 'Info',
          message: 'This is an info message',
        })
      },

      open4() {
        this.$notify.error({
          title: 'Error',
          message: 'This is an error message',
        })
      },
    },
  }
</script>
<!--
<setup>

  import { defineComponent } from 'vue';
  import { ElNotification } from 'element-plus';

  export default defineComponent({
    setup() {
      
      const open1 = () => {
        ElNotification({
          title: 'Success',
          message: 'This is a success message',
          type: 'success',
        });
      };

      const open2 = () => {
        ElNotification({
          title: 'Warning',
          message: 'This is a warning message',
          type: 'warning',
        });
      };

      const open3 = () => {
        ElNotification({
          title: 'Info',
          message: 'This is an info message',
        });
      };

      const open4 = () => {
        ElNotification({
          title: 'Error',
          message: 'This is an error message',
        });
      };
      return {
        open1,
        open2,
        open3,
        open4,
      };
    },
  });

</setup>
-->
```

:::

### Custom position

Notification can emerge from any corner you like.

:::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`.

```html
<template>
  <el-button plain @click="open1"> Top Right </el-button>
  <el-button plain @click="open2"> Bottom Right </el-button>
  <el-button plain @click="open3"> Bottom Left </el-button>
  <el-button plain @click="open4"> Top Left </el-button>
</template>

<script>
  export default {
    methods: {
      open1() {
        this.$notify({
          title: 'Custom Position',
          message: "I'm at the top right corner",
        })
      },

      open2() {
        this.$notify({
          title: 'Custom Position',
          message: "I'm at the bottom right corner",
          position: 'bottom-right',
        })
      },

      open3() {
        this.$notify({
          title: 'Custom Position',
          message: "I'm at the bottom left corner",
          position: 'bottom-left',
        })
      },

      open4() {
        this.$notify({
          title: 'Custom Position',
          message: "I'm at the top left corner",
          position: 'top-left',
        })
      },
    },
  }
</script>
<!--
<setup>

  import { defineComponent } from 'vue';
  import { ElNotification } from 'element-plus';

  export default defineComponent({
    setup() {
      
      const open1 = () => {
        ElNotification({
          title: 'Custom Position',
          message: 'I\'m at the top right corner',
        });
      };

      const open2 = () => {
        ElNotification({
          title: 'Custom Position',
          message: 'I\'m at the bottom right corner',
          position: 'bottom-right',
        });
      };

      const open3 = () => {
        ElNotification({
          title: 'Custom Position',
          message: 'I\'m at the bottom left corner',
          position: 'bottom-left',
        });
      };

      const open4 = () => {
        ElNotification({
          title: 'Custom Position',
          message: 'I\'m at the top left corner',
          position: 'top-left',
        });
      };
      return {
        open1,
        open2,
        open3,
        open4,
      };
    },
  });

</setup>
-->
```

:::

### With offset

Customize Notification's offset from the edge of the screen.

:::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.

```html
<template>
  <el-button plain @click="open"> Notification with offset </el-button>
</template>

<script>
  export default {
    methods: {
      open() {
        this.$notify.success({
          title: 'Success',
          message: 'This is a success message',
          offset: 100,
        })
      },
    },
  }
</script>
<!--
<setup>

  import { defineComponent } from 'vue';
  import { ElNotification } from 'element-plus';

  export default defineComponent({
    setup() {
      
      const open = () => {
        ElNotification.success({
          title: 'Success',
          message: 'This is a success message',
          offset: 100,
        });
      };

      return {
        open,
      };
    },
  });

</setup>
-->
```

:::

### Use HTML string

`message` supports HTML string.

:::demo Set `dangerouslyUseHTMLString` to true and `message` will be treated as an HTML string.

```html
<template>
  <el-button plain @click="open"> Use HTML String </el-button>
</template>

<script>
  export default {
    methods: {
      open() {
        this.$notify({
          title: 'HTML String',
          dangerouslyUseHTMLString: true,
          message: '<strong>This is <i>HTML</i> string</strong>',
        })
      },
    },
  }
</script>
<!--
<setup>

  import { defineComponent } from 'vue';
  import { ElNotification } from 'element-plus';

  export default defineComponent({
    setup() {
      
      const open = () => {
        ElNotification({
          title: 'HTML String',
          dangerouslyUseHTMLString: true,
          message: '<strong>This is <i>HTML</i> string</strong>',
        });
      };

      return {
        open,
      };
    },
  });

</setup>
-->
```

:::

:::warning
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.
:::

### Hide close button

It is possible to hide the close button

:::demo Set the `showClose` attribute to `false` so the notification cannot be closed by the user.

```html
<template>
  <el-button plain @click="open"> Hide close button </el-button>
</template>

<script>
  export default {
    methods: {
      open() {
        this.$notify.success({
          title: 'Info',
          message: 'This is a message without close button',
          showClose: false,
        })
      },
    },
  }
</script>
<!--
<setup>

  import { defineComponent } from 'vue';
  import { ElNotification } from 'element-plus';

  export default defineComponent({
    setup() {
      
      const open = () => {
        ElNotification.success({
          title: 'Info',
          message: 'This is a message without close button',
          showClose: false,
        });
      };

      return {
        open,
      };
    },
  });

</setup>
-->
```

:::

### Global method

Element Plus has added a global method `$notify` for `app.config.globalProperties`. So in a vue instance you can call `Notification` like what we did in this page.

### Local import

```javascript
import { ElNotification } from 'element-plus'
```

In this case you should call `ElNotification(options)`. We have also registered methods for different types, e.g. `ElNotification.success(options)`. You can call `ElNotification.closeAll()` to manually close all the instances.

### Options

| Attribute                | Description                                                                                                        | Type             | Accepted Values                             | Default   |
| ------------------------ | ------------------------------------------------------------------------------------------------------------------ | ---------------- | ------------------------------------------- | --------- |
| title                    | title                                                                                                              | string           | —                                           | —         |
| message                  | description text                                                                                                   | string/Vue.VNode | —                                           | —         |
| dangerouslyUseHTMLString | whether `message` is treated as HTML string                                                                        | boolean          | —                                           | false     |
| type                     | notification type                                                                                                  | string           | success/warning/info/error                  | —         |
| iconClass                | custom icon's class. It will be overridden by `type`                                                               | string           | —                                           | —         |
| customClass              | custom class name for Notification                                                                                 | string           | —                                           | —         |
| duration                 | duration before close. It will not automatically close if set 0                                                    | number           | —                                           | 4500      |
| position                 | custom position                                                                                                    | string           | top-right/top-left/bottom-right/bottom-left | top-right |
| showClose                | whether to show a close button                                                                                     | boolean          | —                                           | true      |
| onClose                  | callback function when closed                                                                                      | function         | —                                           | —         |
| onClick                  | callback function when notification clicked                                                                        | function         | —                                           | —         |
| offset                   | offset from the top edge of the screen. Every Notification instance of the same moment should have the same offset | number           | —                                           | 0         |

### Methods

`Notification` and `this.$notify` returns the current Notification instance. To manually close the instance, you can call `close` on it.
| Method | Description |
| ---- | ---- |
| close | close the Notification |