Detailed introduction about sibling

How the sibling selector can keep CSS readable while completing complex design requirements. This is one of the examples in the web front-end development process that starts simple and gradually becomes more complex: applying vertical margins to all elements in an article ( vertical margins), such as blog posts compiled from complex markdown. In most cases, you have to deal with a lot of exceptions and correlations. For example, titles and images usually require more white space above and below them, but if two images are next to each other, the white space between the two images will change less. The direct distance between the h2 tag and the h3 tag is smaller than the distance between the two h2 tags. When the original author first started doing front-end a few years ago, all these exceptions and dependencies always resulted in complex code, visual inconsistencies and unexpected behavior. I googled many times why margin-top doesn’t work. The first step: The simple html is as follows:

Hello World

1. Example code for sibling selector to implement vertical margins

##Introduction: Use CSS sibling selectors to complete the design of complex vertical margins (vertical margins). The code is as follows

2. jQuery imitates radio button selection effect example code

##Introduction: I just started learning jquery, and I have some css at work. It is very troublesome to beautify the buttons in the form, so I thought of using jquery to replace them. The jquery for the check box is very easy, it is a simple style switching effect, just use the toggleClass() method. I never knew how to do radio button boxes before, because if one radio button box is selected, the styles of the others must be removed. If the two radio button boxes are in the same level, use siblings() to find the other ones directly

3.

About nextSibling_html/css_WEB-ITnose in IE

Introduction: About nextSibling in IE

4.

What is wrong with this code DOMDOCUMENT

Introduction: What is wrong with this code DOMDOCUMENT if it is replaced by previousSibling Just normal $doc = new DOMDocument();$html = <<

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  5.

  XML parsing and operations of adding, deleting, modifying and checking 2

  Introduction: I wrote a node operation interface INodeAction and directly pasted the code: getPreviousSibling The method is to get the previous adjacent node, and getNextSibling is to get the next adjacent node. The getBeifen method is mainly for documentation purposes. If it is the root node, 0 is returned. The printSpace method is based on the node seniority and is standardized when writing the document.
  6.

  nextSibling_Form special effects

  Introduction: nextSibling
  7.

  Sibling nodes in DOM script programming_javascript skills

  Introduction: Sibling nodes can access different child nodes on the same level through the previousSibling and nextSibling attributes. Is this sibling node an element or a text node? How does it run on modern browsers?
  8.

  JS code that imitates jQuery’s siblings effect_javascript skills

  Introduction: Take a DOM element Sibling nodes, imitating jQuery's siblings method, using native JS code to complete
  9.

  javascript nextSibling and getNextElement(node) usage introduction_Basic knowledge

  Introduction: Introduction to the use of javascript nextSibling and getNextElement(node). Friends who are learning js can refer to it.
  10.

  js nextSibling attribute and previousSibling attribute overview and usage notes_Basic knowledge

  Introduction: nextSibling attribute: This attribute represents the next node of the current node; if there is no node at the same level, null is returned; previousSibling attribute: This attribute has the opposite effect to the nextSibling attribute. Next I will introduce it in detail. If you are interested, you may wish to learn more. It may be helpful to you

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