What does $ in jquery mean?

The $ symbol in jquery is a function, which is usually used as the main access point of jQuery. The syntax is "$(selector)". Using jQuery can reduce the complexity of JavaScript code and make development more efficient and convenient.

The operating system of this tutorial: Windows 10 system, jQuery3.6.0 version, Dell G3 computer.

In jQuery, the $ symbol is a function and is usually used as the main access point of jQuery.

1. How to use

When using jQuery, we can use the following method to reference the $ symbol:

```javascript
$(selector).action();
```

Among them, `selector` represents the DOM element of the required operation , and `.action()` represents the operation performed on the DOM element.

2. Benefits

There are many benefits of using jQuery. The following are several main aspects:

• Reduces the complexity of JavaScript code, Makes development more efficient and convenient;

• Quickly complete page operations and effects, improving user experience;

• has good cross-browser compatibility and can be used in Achieve the same effect on different browsers.

3. Code example

For example, there is the following content in the HTML code:

```html
<div id="example"></div>
```

If you want to change the background color of this div element Animation, then it can be achieved through the following code:

```javascript
$('#example').animate({backgroundColor: '#000'}, 'slow');
```

This code will select the div with the id example and gradient its background color to black.

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