ToolJet/docs/versioned_docs/version-2.50.0-LTS/widgets/custom-component.md

---
id: custom-component
title: Custom Component
---

**Custom Component** can be used to create your own React component when the needed functionality isn't available in other components.

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<img style={{ border:'0', marginBottom:'15px', borderRadius:'5px', boxShadow: '0px 1px 3px rgba(0, 0, 0, 0.2)' }} className="screenshot-full" src="/img/widgets/custom-component/custom-component-v2.png" alt="ToolJet - Widget Reference - Custom Component" />

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## Properties

### Data

The data needs to be an object that needs to be passed as **data** props to the **Custom Component**.

**Example:**

```json
{{{
    title: "Hi! There",
    buttonText: "Updated Text",
    queryName: "runjs1"
}}}
```

### Code

This field is used to add a React code for your custom component. The packages for the custom component can be imported from [Skypack](https://www.skypack.dev/) or [esm](https://esm.sh/). For example, to import **React** package into the custom component it can be imported as `import React from 'https://cdn.skypack.dev/react'`.

ToolJet provides 3 props to interact with the app:
- **data** is a shared object between a custom component and the ToolJet app.
- **updateData** is a function that accepts a single object used to update the data passed to the custom component.
- **runQuery** is a function that accepts a query name as a string used to run the query from the custom component.

**Example:**

```js
import React from "https://cdn.skypack.dev/react";
import ReactDOM from "https://cdn.skypack.dev/react-dom";
import { Button, Container, Link } from "https://cdn.skypack.dev/@material-ui/core";

const MyCustomComponent = ({data, updateData, runQuery}) => (
    <Container>
        <h1>{data.title}</h1>
        <Button
            color="primary"
            variant="outlined"
            onClick={() => {updateData({...data, title: 'Hello World!!'})}}>
            {data.buttonText}
        </Button>
        <Button
            color="primary"
            variant="outlined"
            onClick={() => {runQuery(data.queryName)}}
        >
            Run Query
        </Button>
    </Container>
);

const ConnectedComponent = Tooljet.connectComponent(MyCustomComponent);

ReactDOM.render(<ConnectedComponent />, document.body);
```

:::info
`Tooljet.connectComponent` acts as a HOC and it is required to get access to the data passed into the custom component and run the query.
:::

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## Component Specific Actions (CSA)

There are currently no CSA (Component-Specific Actions) implemented to regulate or control the component.

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## Exposed Variables

| <div style={{ width:"100px"}}> Variables  </div>    | <div style={{ width:"135px"}}> Description </div> | <div style={{ width:"135px"}}> How To Access </div> |
|:----------- |:----------- |:---------- |
| data | This variable will hold the variables assigned inside the `code` for custom component.| Access the value dynamically using JS: `{{components.customcomponent1.data.title}}`.|

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## General
### Tooltip

A Tooltip is often used to specify extra information about something when the user hovers the mouse pointer over the component.

Under the <b>General</b> accordion, you can set the value in the string format. Now hovering over the component will display the string as the tooltip.

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## Layout

| <div style={{ width:"100px"}}> Layout </div> | <div style={{ width:"100px"}}> Description </div> | <div style={{ width:"135px"}}> Expected Value </div> |
|:--------------- |:----------------------------------------- | :------------------------------------------------------------------------------------------------------------- |
| Show on desktop | Toggle on or off to display desktop view. | You can programmatically determining the value by clicking on **fx** to set the value `{{true}}` or `{{false}}`. |
| Show on mobile  | Toggle on or off to display mobile view.  | You can programmatically determining the value by clicking on **fx** to set the value `{{true}}` or `{{false}}`. |

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----

## Styles

| <div style={{ width:"100px"}}> Style </div> | <div style={{ width:"100px"}}> Description   </div>                                                                                                                                                                                                                                           | <div style={{ width:"100px"}}> Default value </div> |
|:---------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |:--------- |
| Visibility | Toggle on or off to control the visibility of the component. You can programmatically change its value by clicking on the **fx** button next to it. If `{{false}}` the component will not visible after the app is deployed. | By default, it's set to `{{true}}`. |

:::info
Any property having **fx** button next to its field can be **programmatically configured**.
:::

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