HTML5 has a new input input type, that is, the value 1 after type
Text field
Radio button< ;input type="radio">
Check box
Drop-down list
Password field
Submit button
Clickable button
Image button
Hidden field
Reset button
File field
The new input types in HTML5 are
Email Type: used to verify the format of the email. The value of the email field will be automatically verified when the form is submitted.
URL type: used to verify the format of the URL address. The value will be automatically verified when the form is submitted. The value of the url field
Number type: It will provide the function of selecting a number according to your settings. The min attribute sets the minimum value, the max attribute sets the maximum value, the value attribute sets the current value, and the step attribute Set the value that increases each time (ie, the step value). Some browsers do not support
<input type="number" name="num1" min="1" max="100" step="5" />
Range type: used for input fields that should contain numeric values within a certain range. It will be displayed in the form of a slider. The min attribute sets the minimum value, the max attribute sets the maximum value, and the value attribute sets the current value. If not set, the default value range is 1-100
<input type="range" name="range1" min="1" max="50" />
Date and time types:
HTML5 has several new input types for selecting dates and times:
Date - Select day, month, year
Month - Select the month and year
Week - Select the week and year
time - Select the time (hours and minutes)
datetime - Select the time, day, month, year (UTC time)
datetime-local - select time, day, month, year (local time)
Search type: used for search fields, such as site search or Google search, add it If the results="s" attribute is added, a search icon will be added in front of the search box
<input type="search" name="search1" /> input[type="search"]{ -webkit-appearance:textfield; }
Tel type: used to verify whether the input is in phone format. This element is not supported by browsers yet
Color type: A color picker will be provided for the user to select a color, and the color selected by the user will be filled into this element
HTML5 new form element 2
Datalist specifies the option list of the input field.
The list is created through the option element in datalist.
If you need to bind the datalist to the input field, please use the list attribute of the input field to reference the id of the datalist:
Keygen provides a way to authenticate users Reliable method.
The keygen element is a key-pair generator. When the form is submitted, two keys are generated, a private key and a public key.
The private key is stored on the client, and the public key is sent to the server. The public key can be used later to verify the user's client certificate.
Currently, browser support for this element is poor enough to make it a useful security standard.
Output is used for different types of output, such as calculation or script output
## CSS3 has the following new attributes
box-shadow(shadow effect)
box-shadow: 20px 10px 0 #000;
box-shadow: 20px 10px 0 #000;
Usage:
border: 10px solid #000; -moz-border-bottom-colors: #555 #666 #777 #888 #999 #aaa #bbb #ccc; -moz-border-top-colors: #555 #666 #777 #888 #999 #aaa #bbb #ccc; -moz-border-left-colors: #555 #666 #777 #888 #999 #aaa #bbb #ccc; -moz-border-right-colors: #555 #666 #777 #888 #999 #aaa #bbb #ccc;
Instructions:
Color value The number is not fixed, and FF’s private writing method does not support abbreviations: -moz-border-colors: #333 #444 #555;
border-colors (set multiple colors for the border)
Code:
-moz-border-image: url(exam.png) 20 20 20 20 repeat; -webkit-border-image: url(exam.png) 20 20 20 20 repeat;
Description:
(1). 20 20 20 20 ---> The width of the border corresponds to the top, right, bottom, and left borders respectively. Changing the width can achieve different Effect;
(2). Border picture effect (currently only two types are implemented):
repeat --- The border picture will be tiled, similar to background repetition;
stretch --- The border image will be stretched to cover the entire border;
(3). The border thickness of the element must be set to a non-0 non-auto value.
text-shadow(text-shadow)
##text-shadow: [
(1) 和是可选的, 当未指定时, 将使用文本颜色; 当未指定时, 半径值为0;
(2) shadow可以是逗号分隔的列表, 如:
text-shadow: 2px 2px 2px #ccc, 3px 3px 3px #ddd;
(3) 阴影效果会按照shadow list中指定的顺序应用到元素上;
(4) 这些阴影效果有可能相互重叠, 但不会叠加文本本身;
(5) 阴影可能会跑到容器的边界之外, 但不会影响容器的大小.
text-overflow(文本截断)
text-overflow: inherit | ellipsis | clip ;
word-wrap(自动换行)
word-wrap: normal | break-word;
border-radius(圆角边框)
-moz-border-radius: 5px;
这个值为圆角的圆的半径值
opacity(不透明度)
opacity: 0.5;
这个值设置为0-1之间的数
box-sizing(控制盒模型的组成模式)
box-sizing: content-box | border-box;
说明:
1. content-box:
使用此值时, 盒模型的组成模式是, 元素宽度 = content + padding + border;
2. border-box:
使用此值时, 盒模型的组成模式是, 元素宽度 = content(即使设置了padding和border, 元素的宽度也不会变).
以上就是关于HTML5和CSS3的几个“新增”的内容,更多相关内容请关注PHP中文网(www.php.cn)!

HTML5 code consists of tags, elements and attributes: 1. The tag defines the content type and is surrounded by angle brackets, such as. 2. Elements are composed of start tags, contents and end tags, such as contents. 3. Attributes define key-value pairs in the start tag, enhance functions, such as. These are the basic units for building web structure.

HTML5 is a key technology for building modern web pages, providing many new elements and features. 1. HTML5 introduces semantic elements such as, , etc., which enhances web page structure and SEO. 2. Support multimedia elements and embed media without plug-ins. 3. Forms enhance new input types and verification properties, simplifying the verification process. 4. Offer offline and local storage functions to improve web page performance and user experience.

Best practices for H5 code include: 1. Use correct DOCTYPE declarations and character encoding; 2. Use semantic tags; 3. Reduce HTTP requests; 4. Use asynchronous loading; 5. Optimize images. These practices can improve the efficiency, maintainability and user experience of web pages.

Web standards and technologies have evolved from HTML4, CSS2 and simple JavaScript to date and have undergone significant developments. 1) HTML5 introduces APIs such as Canvas and WebStorage, which enhances the complexity and interactivity of web applications. 2) CSS3 adds animation and transition functions to make the page more effective. 3) JavaScript improves development efficiency and code readability through modern syntax of Node.js and ES6, such as arrow functions and classes. These changes have promoted the development of performance optimization and best practices of web applications.

H5 is not just the abbreviation of HTML5, it represents a wider modern web development technology ecosystem: 1. H5 includes HTML5, CSS3, JavaScript and related APIs and technologies; 2. It provides a richer, interactive and smooth user experience, and can run seamlessly on multiple devices; 3. Using the H5 technology stack, you can create responsive web pages and complex interactive functions.

H5 and HTML5 refer to the same thing, namely HTML5. HTML5 is the fifth version of HTML, bringing new features such as semantic tags, multimedia support, canvas and graphics, offline storage and local storage, improving the expressiveness and interactivity of web pages.

H5referstoHTML5,apivotaltechnologyinwebdevelopment.1)HTML5introducesnewelementsandAPIsforrich,dynamicwebapplications.2)Itsupportsmultimediawithoutplugins,enhancinguserexperienceacrossdevices.3)SemanticelementsimprovecontentstructureandSEO.4)H5'srespo

The tools and frameworks that need to be mastered in H5 development include Vue.js, React and Webpack. 1.Vue.js is suitable for building user interfaces and supports component development. 2.React optimizes page rendering through virtual DOM, suitable for complex applications. 3.Webpack is used for module packaging and optimize resource loading.


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