# Tooltip

Canonical: https://www.wiki.jodisand.me/snippets/react/tooltip/


Renders a tooltip component.

- Use the `useState()` hook to create the `show` variable and initialize it to `false`.
- Render a container element that contains the tooltip element and the `children` passed to the component.
- Handle the `onMouseEnter` and `onMouseLeave` methods, by altering the value of the `show` variable, toggling the `className` of the tooltip.

```css
.tooltip-container {
  position: relative;
}

.tooltip-box {
  position: absolute;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  padding: 5px;
  border-radius: 5px;
  top: calc(100% + 5px);
  display: none;
}

.tooltip-box.visible {
  display: block;
}

.tooltip-arrow {
  position: absolute;
  top: -10px;
  left: 50%;
  border-width: 5px;
  border-style: solid;
  border-color: transparent transparent rgba(0, 0, 0, 0.7) transparent;
}
```

```jsx
const Tooltip = ({ children, text, ...rest }) => {
  const [show, setShow] = React.useState(false);

  return (
    <div className="tooltip-container">
      <div className={show ? 'tooltip-box visible' : 'tooltip-box'}>
        {text}
        <span className="tooltip-arrow" />
      </div>
      <div
        onMouseEnter={() => setShow(true)}
        onMouseLeave={() => setShow(false)}

      >
        {children}
      </div>
    </div>
  );
};
```

```jsx
ReactDOM.render(
  <Tooltip text="Simple tooltip">
    <button>Hover me!</button>
  </Tooltip>,
  document.getElementById('root')
);
```