# Switch your FlowFuse Dashboard nodes from \`elementSizer\` to \`ffElementSizer\`

**URL:** <https://discourse.nodered.org/t/switch-your-flowfuse-dashboard-nodes-from-elementsizer-to-ffelementsizer/102123>\
**Category:** Dashboard\
**Created:** [10 November 2026 16:25 UTC](https://discourse.nodered.org/t/switch-your-flowfuse-dashboard-nodes-from-elementsizer-to-ffelementsizer/102123 "2026-11-10T16:25:20Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![n-lark](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/n-lark/32/108758_2.png) [@n-lark](https://discourse.nodered.org/u/n-lark)\
**Post date:** [10 November 2026 16:25 UTC](https://discourse.nodered.org/t/switch-your-flowfuse-dashboard-nodes-from-elementsizer-to-ffelementsizer/102123/1 "2026-11-10T16:25:20Z")

</div>

Hi all, a heads-up for anyone creating or maintaining custom nodes for FlowFuse Dashboard (Dashboard 2.0).

FlowFuse Dashboard v1.35.0 deprecated `$.fn.elementSizer` and `$.fn.elementSizerByNum`. Use `ffElementSizer` and `ffElementSizerByNum` instead.

**Why**  
Node-RED Dashboard 1.0 uses the same names and can replace them depending on load order. That leads to unexpected results in your node's edit dialog.

**What you'll see**  
The old names still work. From v1.36.1 of @flowfuse/node-red-dashboard, Node-RED logs a warning, once per node type, when someone opens the edit dialog of a node that uses an old name:

```auto
[warn] [@flowfuse/node-red-dashboard] $.fn.elementSizer is deprecated and will be removed, use $.fn.ffElementSizer instead (used by "my-node-type")

```

In v1.35.0 and v1.36.0, the warning appears in the browser devtools console instead, once per page load.

**How to fix**  
Rename the call in `oneditprepare`:

```js
$('#node-input-size').ffElementSizer({
    width: '#node-input-width',
    height: '#node-input-height',
    group: '#node-input-group'
})

```

New in v1.35.0: when your node sits inside a subflow, the sizer shows Width, Height, and Order text inputs, so users can set them with `${ENV}` subflow properties. This needs the `group` option.

**Compatibility**  
`ffElementSizer` and `ffElementSizerByNum` only exist in FlowFuse Dashboard v1.35.0 and later. If your node switches to them, its edit dialog won't work for users on older versions. When you release the update:

- Note the new minimum version (FlowFuse Dashboard v1.35.0) in your README and changelog.
- If your package declares FlowFuse Dashboard as a peer dependency, raise it:

```json
"peerDependencies": {
    "@flowfuse/node-red-dashboard": ">=1.35.0"
}

```

- Consider a major or minor version bump for your node so users notice the requirement.

Full details are in the docs: [Widget Size](https://dashboard.flowfuse.com/contributing/widgets/third-party.html#widget-size)

The old names will be removed in a future major release, so now's a good time to switch. Questions and edge cases are welcome in [GitHub Issues](https://github.com/FlowFuse/node-red-dashboard/issues).