Summary of 10 basic drawing usage example tutorials

Pseudo classes and pseudo elements are independent of the document structure. The way they obtain elements is not based on basic element characteristics such as id, class, and attributes, but on elements in a special state (pseudo-classes), or on special content in the elements (pseudo-elements). The differences are summarized as follows: CSS pseudo-classes (Pseudo-classes): used to add special effects to certain selectors, that is, add special effects (usually dynamic effects) based on the current static style of the element, so an element achieves a When in a specific state, it may get a pseudo-class style; when the state changes, it will lose this style. Property description: active Adds styles to activated elements: focus Adds styles to elements with keyboard input focus: hover When the mouse is hovering over the elements, adds styles to elements: link Adds styles to unvisited links: visited Add style to the visited link: first-child Add style to the first child element of the element: lang Add style to the element with the specified lang attribute Note: In the CSS definition, &nbs

of the same element 1. The difference between CSS pseudo-classes and pseudo-elements

##Introduction: Pseudo-class and pseudo-elements are independent of the document structure. The way they obtain elements is not based on basic element characteristics such as id, class, and attributes, but on elements in a special state (pseudo-classes), or on special content in the elements (pseudo-elements). The differences are summarized as follows:

2. Detailed introduction to the sample code sharing of Javascript encapsulation id, class and element selector

Introduction: This article mainly introduces you to the method of encapsulating id, class and element selector in Javascript. The article gives detailed sample code, which will be helpful to everyone. Understanding and learning has certain reference value. Friends who need it can take a look below.

3. HTML5 canvas basic drawing: drawing five-pointed star

#Introduction: is a new tag in HTML5, used to draw graphics. In fact, this tag is the same as other tags. The special thing is that this tag can get a CanvasRenderingContext2D object, we can control this object for drawing through JavaScript script. is just a container for drawing graphics. In addition to attributes such as id, class, and style, there are also hei

4.

HTML5 canvas basic drawing Drawing lines

##Introduction: is new in HTML5 Tag, used to draw graphics. In fact, this tag is the same as other tags. Its special feature is that the tag can obtain a CanvasRenderingContext2D object, which we can control through JavaScript scripts for drawing. is just a container for drawing graphics. In addition to attributes such as id, class, style, etc., there are also hei

##5. HTML5 canvas basic drawing Fill style implementation

## Introduction: is new in HTML5 The tag is used to draw graphics. In fact, this tag is the same as other tags. Its special feature is that the tag can obtain a CanvasRenderingContext2D object, which we can control through JavaScript scripts for drawing. is just a container for drawing graphics. In addition to attributes such as id, class, and style, there are also hei

6. HTML5 canvas basic drawing Graphic transformation

##Introduction: is a new tag in HTML5, used to draw graphics. In fact, this tag Like other tags, its special feature is that this tag can obtain a CanvasRenderingContext2D object, and we can control the object for drawing through JavaScript scripts. is just a container for drawing graphics. In addition to attributes such as id, class, and style, there are also hei

7. HTML5 canvas basic drawing Drawing curves

## Introduction: is new in HTML5 Tag, used to draw graphics. In fact, this tag is the same as other tags. Its special feature is that the tag can obtain a CanvasRenderingContext2D object, which we can control through JavaScript scripts for drawing. is just a container for drawing graphics. In addition to attributes such as id, class, style, etc., there are also hei

##8.

HTML5 canvas basic drawing Graphic combination

## Introduction: is just a container for drawing graphics , in addition to attributes such as id, class, and style, there are also height and width attributes. There are three main steps for drawing on the > element: 1. Get the DOM object corresponding to the element, which is a Canvas object; 2. Call the getContext() method of the Canvas object to get a CanvasRenderingContext2D object; 3. .Call CanvasRenderi

9. The magic of JQuery$("tagName") and selector_jquery

Introduction: DOM The performance of the getElementsByTagName() method in JQuery is as simple as $("tagName")! tag tag (can be: p, div, button...) The tag itself has ID, Class and other attributes

10. Introduction to the use of jQuery basic selector to select elements_jquery

Introduction: Basic selector: It is the most frequently used selector in jQuery. It consists of element Id, Class, element name, and multiple selectors. You can use the basic selector to To realize the search of most page elements, interested friends can refer to the following

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