Getting started with jquery-selector-implement line-changing instance code _ jquery

Getting started with JQuery-how does a selector implement line-changing color? The JQuery selector inherits some of the CSS and path speech syntaxes and allows you to quickly and accurately select DOM elements by Tag Name, attribute name, and content. Next, we will introduce them in detail, for more information, see section 1. JQuery selector inherits some of the CSS and path speech syntaxes and allows you to quickly and accurately select DOM elements by Tag Name, attribute name, and content.
2. Compared with JavaScript, JQuery selector has the advantage of simple code and perfect detection mechanism.
3. Use the JQuery selector to change the color of the line. The sample code is as follows::

The Code is as follows:

Use JQuery to change the color of the line