## Timeline

Visually display timeline.

### Basic usage

Timeline can be split into multiple activities. Timestamps are important features that distinguish them from other components. Note the difference with Steps.

:::demo

```html
<div class="block">
  <el-timeline>
    <el-timeline-item
      v-for="(activity, index) in activities"
      :key="index"
      :timestamp="activity.timestamp"
    >
      {{activity.content}}
    </el-timeline-item>
  </el-timeline>
</div>

<script>
  export default {
    data() {
      return {
        activities: [
          {
            content: 'Event start',
            timestamp: '2018-04-15',
          },
          {
            content: 'Approved',
            timestamp: '2018-04-13',
          },
          {
            content: 'Success',
            timestamp: '2018-04-11',
          },
        ],
      }
    },
  }
</script>
```

:::

### Custom node

Size, color, and icons can be customized in node.

:::demo

```html
<div class="block">
  <el-timeline>
    <el-timeline-item
      v-for="(activity, index) in activities"
      :key="index"
      :icon="activity.icon"
      :type="activity.type"
      :color="activity.color"
      :size="activity.size"
      :hollow="activity.hollow"
      :timestamp="activity.timestamp"
    >
      {{activity.content}}
    </el-timeline-item>
  </el-timeline>
</div>

<script>
  export default {
    data() {
      return {
        activities: [
          {
            content: 'Custom icon',
            timestamp: '2018-04-12 20:46',
            size: 'large',
            type: 'primary',
            icon: 'el-icon-more',
          },
          {
            content: 'Custom color',
            timestamp: '2018-04-03 20:46',
            color: '#0bbd87',
          },
          {
            content: 'Custom size',
            timestamp: '2018-04-03 20:46',
            size: 'large',
          },
          {
            content: 'Custom hollow',
            timestamp: '2018-04-03 20:46',
            type: 'primary',
            hollow: true,
          },
          {
            content: 'Default node',
            timestamp: '2018-04-03 20:46',
          },
        ],
      }
    },
  }
</script>
```

:::

### Custom timestamp

Timestamp can be placed on top of content when content is too high.

:::demo

```html
<div class="block">
  <el-timeline>
    <el-timeline-item timestamp="2018/4/12" placement="top">
      <el-card>
        <h4>Update Github template</h4>
        <p>Tom committed 2018/4/12 20:46</p>
      </el-card>
    </el-timeline-item>
    <el-timeline-item timestamp="2018/4/3" placement="top">
      <el-card>
        <h4>Update Github template</h4>
        <p>Tom committed 2018/4/3 20:46</p>
      </el-card>
    </el-timeline-item>
    <el-timeline-item timestamp="2018/4/2" placement="top">
      <el-card>
        <h4>Update Github template</h4>
        <p>Tom committed 2018/4/2 20:46</p>
      </el-card>
    </el-timeline-item>
  </el-timeline>
</div>
```

:::

### Timeline Slots

| Name | Description                 |
| ---- | --------------------------- |
| —    | Custom content for timeline |

### Timeline-Item Attributes

| Attribute      | Description               | Type    | Accepted Values                             | Default |
| -------------- | ------------------------- | ------- | ------------------------------------------- | ------- |
| timestamp      | timestamp content         | string  | —                                           | —       |
| hide-timestamp | whether to show timestamp | boolean | —                                           | false   |
| placement      | position of timestamp     | string  | top / bottom                                | bottom  |
| type           | node type                 | string  | primary / success / warning / danger / info | —       |
| color          | background color of node  | string  | hsl / hsv / hex / rgb                       | —       |
| size           | node size                 | string  | normal / large                              | normal  |
| icon           | icon class name           | string  | —                                           | —       |
| hollow         | icon is hollow            | boolean | —                                           | false   |

### Timeline-Item Slots

| Name | Description                      |
| ---- | -------------------------------- |
| —    | Custom content for timeline item |
| dot  | Custom defined node              |