Introduction: the project aims to create a dynamic web page imitating the 100-degree home page, with dynamic transitions in the web background and tab suspensions to enhance user experience and visualization. The project contains simulations of classic elements of the 100-degree home page, such as the design of search boxes, navigational links and other service entrances. In addition, the use of css3 and javasThe background image smooth transition effect and the function of tab content that is achieved by cript changes with the scrollbar. Through the analysis of project documents, learners can gain insight into web development techniques such as HTML structures, css animations and javasCript interactive effect。
1. Design to imitate 100-degree home page 1. 1 first-degree home page
The imitation of the 100-degree home page design is a good practice for learning the front end. First of all, let's look at its core elements and layout by analysing the design of the 100-degree home page. The 100-degree home page, known for its concise layout and rapid response time, consists mainly of the following parts:
1. 2 overview of design thinking
When imitating design, we need to focus on the following:
By imitating the 100-degree home page, developers are not only able to practice basic HTML, css and javasCript skills also provide insight into web standards and best practices。
1. 3 steps towards realization
The process of imitating the design can be broadly divided into the following steps:
Page structure planning: define the various parts of the page and plan the HTML structure; style design: style design for page elements using css; functional achievement: using javasCript adds dynamic interactive functions; testing and optimization: ensures compatibility and performance on mainstream browsers and devices。
Next, we will proceed to a detailed design process, starting with simple static pages, which will gradually move towards dynamic effects and enhanced interaction。
2. Web-based dynamical transitions
The dynamic background has become a popular trend in modern web design, adding visual appeal to the web pages and enhancing user experience. This chapter will explore in depth the use of different front-end technologies to achieve dynamic changes in the web background。
2. 1 summary of web-based background switching techniques 2. 1. 1 need for and advantages of dynamic background
Dynamic background plays a crucial role in web design. On the one hand, it can attract the attention of users, direct their visual focus and provide them with continuous visual experience. On the other hand, dynamic contexts can convey the themes and emotions of the website and help users quickly understand what it is about to express。
The advantages of the dynamic context are reflected in the following:
2. 1. 2 technical options: css3 and javasCript comparison
Technologies to achieve web-based background transitions are mainly css3 and javasI don't know. Both have advantages, and the choice of appropriate technologies is key to achieving optimal results, depending on the needs scenario。
Css3 has the following advantages in achieving a context transition:
And javas..Cript is more appropriate in certain complex interactive scenarios:
Next, we'll explore the use of css3 and javasThe specific method by which cript achieves a web background switch。
2. 2 css3 background transition 2. 2. 1 @keyfRames and animation properties
@keyf in css3Rames rules and animation properties are at the core of animating effects. @keyfRames defines the key frame of the animation sequence, while animation properties apply these key frames to the selected elements。
First, define a simple background animation sequence:
@keyfOther organiser
0% {background-color: #f06d06;}
50% {background-color: #18b6a4;}
100% {background-color: #f06d06;}
♪ i'm sorry ♪Then apply this animation to the background of the page:
HTML {
animation: colorchange 5s interstate;
♪ i'm sorry ♪This code will allow the background colour of the page to rotate indefinitely between the three specified colours, with an animation of five seconds。
2. 2. 2 smooth transition between background colours and pictures
In addition to the colour transition, css3 supports smooth switching of background pictures. Creates a smooth background switching effect by using background-image properties in conjunction with animation。
For example, create a background picture to change animation:
@keyfOther organiser
0%'image1. Jpg"""
25%'image2. Jpg"""
50%'image3. Jpg"""
75%'image4. Jpg"""
100%'image1. Jpg"""
♪ i'm sorry ♪Apply this animation to body tag:
Body
animation: bgchange 10s infinite linear;
♪ i'm sorry ♪This code achieves a smooth transition of the background picture every 10 seconds。
2. 3 javasCript control background switch 2. 3. 1 timer usage
JavasCript provides the timer functions settimeout and setinterval, which allow developers to execute codes after the time interval set, which is well suited to achieve timing。
For example, the background colour is changed every 5 seconds:
Function changebackground()
var colores =['#f06d06'..,'#18b6a4'..,'#333'];
=dI'm sorry, i'm sorry, i'm sorry. Var nextcolor = colors [(colors. Indexof(currentcolor)+1) % colors. Length];
d= nextcolor;
♪ i'm sorry ♪
setinterval (changebackground, 5000);2. 3. 2 user interaction and background switching
JavasCript can also respond to an interactive user event to switch background, such as a mouse suspension or a button click event. The following example clicks on the button to switch the background picture:
Var curentimage = 0;
var images = [ chuckles ]'image1. Jpg'..,'image2. Jpg'..,'image3. Jpg'..,'image4. Jpg'];
function changebackgroundimage()
dImage = "url."'"+images")";
currentimage = (currentimage + 1) %images. Length;
♪ i'm sorry ♪This code uses a photo array and a current image index to switch the background by clicking on the button to update the background image properties of the body label。
That's css3 and javasCript achieves a dynamic change in the web background. The next section will continue to explore the use of similar technologies to achieve other attractive web effects。
3. Tab suspension switch
In the modern web design, the tab is a common navigation component that allows users to switch between different content panels without leaving the current page. Good tab design not only enhances user experience but also ensures simplicity and functionality of interfaces. This chapter will explore the basic principles of the design of the tab and how to use css3 and javasCript achieves suspension switch。
3. 1 basic principles of the design of tab 3. 1. 1 user experience and interface simplicity
Tab must be designed to focus on user experience and the simplicity of the interface. At the heart of the user experience lies the ease of use and intuitiveness, i. E., the user should be able to understand with little effort how to interact with the tab and quickly find what they want. The simplicity of the interface requires that we remove unnecessary decorations and complexities and ensure that the visual focus is focused on key elements。
3. 1. 2 semantic design of HTML structure
Semantic HTML structures form the basis of modern web design. This means that each HTML element should be selected according to its content and function. For tabs, use semantic labels such as:,
, wait to build the basic structure. This would not only help seo (research engine optimization) but also make web content more friendly to assistive technologies such as screen readers。
3. 2 css3 suspension effect 3. 2. 1 application of pseudo-specifier
Css3 introduced a richer pseudo-selectioner, making it easier to achieve the suspension effect of the tab. :hover is key to achieving a suspended effect, which changes the style when the mouse pointer is suspended on the element。
. Tab
display: inline-block;
paddy: 10px;
border: 1 px solid #cc;
#f0f0f0;
♪ i'm sorry ♪
. Tab: cover {
#e0e0e0;
♪ i'm sorry ♪In the above css code, when the mouse is suspended
The background colour becomes #e0e0e0 on the element。
3. 2. 2 transitional and transformational effects
To make the suspension appear more smooth, the transition and transformation effects can be achieved using the css3 transition and transport properties。
. Tab
transtion: background-color 0. 3s ease-in-out;
♪ i'm sorry ♪
. Tab: cover {
transform: scale (1. 1);
♪ i'm sorry ♪In the above code, transfer properties define the duration and speed curve of the background colour change. When the mouse is suspended, the scale function of the transform property magnifies the element and creates a scaling effect。
3. 3 javasCript achieves the tab switch 3. 3. 1 listening and processing of events
Although css can achieve basic suspension, javasCript is essential to achieve a complex tab logic. Use javasCript can handle, for example, click events and dynamically switch the display and hide of the content panel。
/ javasCript example code
dQuery selectorall'. Tab. Foreach
tab. Addeventlistener'click', effect(){
/ / remove all tab active
dQuery selectorall'. Tab. Foreach
tab. Classlist. Remove'activeI'm sorry. I'm not sure.
/ / add activated status to clicked tab
this. Classlist. Add()'activeI'm sorry.
// activate the content panel according to the clicked tab
co= this. Getatribute'data-targetI'm sorry. DQuery selectorall'. Panel. Foreach
i don't know'none';
if (panel. Id =panelid)
i don't know'block';
♪ i'm sorry ♪
i'm not sure. I'm not sure. I'm not sure;The javasCript listens to all . Tab clicks, and when a click occurs, it hides all panels and displays panels corresponding to the clicked label。
3. 3. 2 switching logic and state management
To better manage the status of the tab, you can use javasCript to control the addition and removal of class. This ensures that the interface is synchronized with logic when users interact。
/ javasCript example code continuation
/ / add an activated auxiliary function
functactive tab(tab) {
tab. Classlist. Add()'activeI'm sorry. Co= tab. Getatribute'data-targetI'm sorry. Co=d(a) document. Getelementbyid (panelid);
i don't know'block';
♪ i'm sorry ♪
/ / remove the activated auxiliary function
functivetab(tab){
tab. Classlist. Remove'activeI'm sorry. Co= tab. Getatribute'data-targetI'm sorry. Co=d(a) document. Getelementbyid (panelid);
i don't know'none';
♪ i'm sorry ♪This code provides enabling functions to add and remove activated states, making the state management clearer and easier to maintain。
From this analysis, we can see css and javasCript's respective responsibilities in achieving the card suspension switch: css is responsible for visual dynamics, while javasThe interactive logic behind the cript process. The combination of the two provides a fluid and visual interface for users。
4. HTML structure design 4. 1 new features and advantages of structured HTML5 documents 4. 1. 1 HTML5
HTML5 represents a significant advance in web technology, introducing new features to enhance the performance and functionality of web pages. Some key advantages include:
