Debugging

Debugging in React JS simply means the process you undergo to find, diagnose, and resolve errors, issues, or bugs in your React application. Debugging is important in any coding process since bugs are inevitable regardless of the coder's experience.

React JS offers you some tools to ease the debugging process. Among these tools is the React Developer Tools, which is an add-on that's accessible in both Chrome and Firefox browsers and it's an essential part of any React developer's toolkit.

It features a component tree that allows you to inspect and edit a component props and state. With it, you could inspect an entire component tree, select individual components, examine and edit their current props and state, and observe their re-renders as you interact with the application.

The example code snippet below demonstrates how you can spot a bug and how you can potentially fix it. Suppose you have a component that should display a text input field for a user to type in their name, but for some reason, the input field isn't being displayed:

```jsx
import React, { useState } from 'react';

function MyComponent() {
const [name, setName] = useState('');

return (
<div>
<h1>Hello, {name}!</h1>
{ /* Notice the typo 'nadme' instead of 'name', this could be a potential bug */ }
<input type="text" value={nadme} onChange={(e) => setName(e.target.value)} />
</div>
);
}

export default MyComponent;
```

By using React Developer Tools, you can inspect this component and see that the value for the `input` field refers to 'nadme', which doesn't exist in this component's state. To fix this bug, you should change 'nadme' to 'name':

```jsx
import React, { useState } from 'react';

function MyComponent() {
const [name, setName] = useState('');

return (
<div>
<h1>Hello, {name}!</h1>
<input type="text" value={name} onChange={(e) => setName(e.target.value)} />
</div>
);
}

export default MyComponent;
```

By performing this debugging process, you've identified the bug and resolved it by adjusting the 'nadme' typo to 'name'.