<a:href="`https://github.com/ElemeFE/element/blob/master/.github/CONTRIBUTING.${ lang }.md`" class="footer-main-link" target="_blank">{{langConfig.contribution}}</a>
| height | Table's height. By default it has an `auto` height. If its value is a number, the height is measured in pixels; if its value is a string, the height is affected by external styles | string/number | — | — |
| max-height | Table's max-height. The height of the table starts from `auto` until it reaches the maxHeight limit. The `maxHeight` is measured in pixels, same as `height` | string/number | — | — |
| highlight-current-row | whether current row is highlighted | boolean | — | false |
| current-row-key | key of current row, a set only prop | string,number | — | — |
| row-class-name | function that returns custom class names for a row, or a string assigning class names for every row | Function(row, index)/String | — | — |
Used for node selection. In the following example, data for each layer is acquired after being clicked. If there is no child data, the expanding icon will disappear.
Used for node selection.
::: demo
::: demo This example also shows how to load node data asynchronously.
```html
<el-tree
:props="props"
...
...
@@ -421,7 +421,7 @@ Used for node selection. In the following example, data for each layer is acquir
### Custom leaf node in lazy mode
::: demo
::: demo A node's data is not fetched until it is clicked, so the Tree cannot predict whether a node is a leaf node. That's why a drop-down button is added to each node, and if it is a leaf node, the drop-down button will disappear when clicked. That being said, you can also tell the Tree in advance whether the node is a leaf node, avoiding the render of the drop-down button before a leaf node.
