css selectors which are advanced selectors

Advanced selectors in css selectors include descendant selectors, child element selectors, adjacent sibling selectors, universal sibling selectors, attribute selectors, class selectors, ID selectors, and pseudo-class selections selectors and pseudo-element selectors, etc. Detailed introduction: 1. The descendant selector uses a space-separated selector to select the descendant elements of an element; 2. The child element selector uses a selector separated by a greater than sign to select the direct child elements of an element; 3. Adjacent sibling selectors use selectors separated by a plus sign to select the first sibling element immediately following an element, and so on.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

There are some selectors in CSS selectors called advanced selectors, which provide more powerful and flexible selection capabilities and can select based on conditions such as the relationship, status, and position of elements. The following are common advanced selectors in CSS:

1. Descendant Selector: Use a space-separated selector to select the descendant elements of an element. For example, `div p` means to select all `

` elements that are descendants of `

` elements.

2. Child Selector: Use a selector separated by a greater than sign (>) to select the direct child elements of an element. For example, `div > p` ​​means to select all `

` elements that are direct children of the `

` element.

3. Adjacent Sibling Selector: A selector separated by a plus sign ( ), indicating that the first sibling element immediately following an element is selected. For example, `h1 p` means selecting the first `

` element immediately following the `

` element.

4. General Sibling Selector: A selector separated by a tilde (~) to select all sibling elements after an element. For example, `h1 ~ p` means selecting all `

` elements after the `

` element.

5. Attribute Selector: Use square brackets ([]) to select elements with specified attributes. For example, `input[type="text"]` means to select all `` elements whose `type` attribute value is "text".

6. Class Selector: Use a selector starting with a period (.) to select elements with a specified class name. For example, `.red` means to select all elements with the class name "red".

7. ID Selector: Use the selector starting with the pound sign (#) to select the element with the specified ID. For example, `#header` means selecting the element with the ID "header".

8. Pseudo-class Selector: Use a selector starting with a colon (:) to select elements that meet a certain status or condition. For example, `:hover` indicates the selection state when the mouse is hovering over the element.

9. Pseudo-element Selector: Use a selector starting with a double colon (::) to select a specific part of the element. For example, `::before` indicates the content inserted before the selected element.

The above are common advanced selectors in CSS. They provide more flexibility and selection capabilities. They can select and style elements in web pages based on their relationship, status, position and other conditions. By rationally using these advanced selectors, we can achieve more precise and diverse styling effects, improving the interactivity and visual appeal of web pages.

The above is the detailed content of css selectors which are advanced selectors. For more information, please follow other related articles on the PHP Chinese website!