# React hooks

## useEvt()

{% embed url="<https://stackblitz.com/edit/evt-hooks-101?file=index.tsx>" %}
Basic example
{% endembed %}

{% embed url="<https://stackblitz.com/edit/react-ts-hqhuzk?file=App.tsx>" %}
Creating Evt from DOM Elements
{% endembed %}

The core idea is to always use the `ctx` to attach handlers. This will enable EVT to detach/reload handlers when they need to be namely when the component is unmounted or a value used in a handler has changed. &#x20;

## useRerenderOnStateChange()

{% embed url="<https://stackblitz.com/edit/react-ts-wquwqg?file=App.tsx>" %}
With StatefulEvt
{% endembed %}

## ESLint

You can use this [`react-hooks/exhaustive-deps`](https://github.com/facebook/react/blob/master/packages/eslint-plugin-react-hooks/README.md#advanced-configuration) to be warned if you forget a dependency:

```javascript
//package.json (if you use create-react-app otherwise use .eslintrc.js) 
{
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ],
    "rules": {
      "react-hooks/rules-of-hooks": "error",
      "react-hooks/exhaustive-deps": [
        "error",
        {
          "additionalHooks": "(useEvt)"
        }
      ]
    }
  }
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.evt.land/react-hooks.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.