This article mainly introduces in detail the method of using classList in HTML5 to operate CSS classes. Interested friends can refer to it. After years of fighting in JavaScript and JavaScript tool libraries, I often have this daydream: When Modern browsers can provide some auxiliary methods and class libraries to replace those JavaScript tool libraries, such as jQuery, allowing us to replace them with browser-native methods. I know that browsers will definitely improve in this direction, but this evolution process will not be very fast, and various browsers need to make such innovations together. Firefox, Google Chrome, and especially IE, only when these mainstream browsers Only with such functions can our wishes be truly realized. The good news is that one such feature has been added to the HTML5 API: classList. In the HTML5 API, each node in the page DOM has a classList object. Programmers can use the methods inside to add, delete, and modify CSS classes on the node. Using classList, programmers can also use it to determine a certain section
1. 10 recommended articles about CSS classes
Introduction: This article mainly introduces in detail the method of using classList in HTML5 to operate CSS classes. Interested friends can refer to JavaScript and JavaScript After many years of fighting in tool libraries, I often have this daydream: When will modern browsers provide some auxiliary methods and class libraries to replace those JavaScript tool libraries, such as jQuery, let us replace them with browser-native methods. I know that browsers will definitely improve in this direction, but this evolution process will not be very fast, and various browsers...
2. Added and added in javascript Summary of usage of removal examples
Introduction: This article will share with you how to add and remove class names in JavaScript Function, friends who need it can refer to Method 1: Use the className attribute; Method 2: Use the classList API; // Used to match whether the class name exists or not function reg(name){ return new RegExp(' ;(^|\\s)'+name+'(\\s+|$)');}/...
##3 . classList attribute in HTML5
4.
Detailed introduction to using classList in HTML5 to operate CSS classes
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6.
HTML5 actual combat and analysis of the classList attribute
Introduction: Previously I introduced some newly added selectors in HTML5, namely querySelector(), querySelectorAll() and getElementsByClassName(). These three have their own unique functions. If necessary, you can read the relevant content in Html5 actual combat and analysis. Today I will introduce to you the classList attribute. 7. Issues related to PHP SMARTY double loop (recursive) output classification Introduction: PHP SMARTY double loop ( Recursive) output classification problem template PHP code
{foreach from=$classlist item=newsclass}
Introduction: PHP SMARTY double loop (recursive) output classification issue template PHP code{foreach from=$classlist item=newsclass } Introduction: I have been paying close attention to the latest innovations in HTML5. Do you think I am wasting my time? HTML5 brings us many "heavy-duty" features, such as WebSockets, Web Workers, History, Storage and some tool classes like classList [Related Q&A recommendations]: javascript - Can I use setAttribute/removeAttribute to add or delete class names? css - Javascript operates the dom class name, how to streamline the code ios - How to obtain all controllers of a project efficiently and accurately Execution time of viewdidload method? javascript - undefined is not a function js error javascript - Android 4.X Element.classList.add parameter type problem?
The above is the detailed content of 9 recommended content for classlist. For more information, please follow other related articles on the PHP Chinese website!

Self-closingtagsinHTMLandXMLaretagsthatclosethemselveswithoutneedingaseparateclosingtag,simplifyingmarkupstructureandenhancingcodingefficiency.1)TheyareessentialinXMLforelementswithoutcontent,ensuringwell-formeddocuments.2)InHTML5,usageisflexiblebutr

To build a website with powerful functions and good user experience, HTML alone is not enough. The following technology is also required: JavaScript gives web page dynamic and interactiveness, and real-time changes are achieved by operating DOM. CSS is responsible for the style and layout of the web page to improve aesthetics and user experience. Modern frameworks and libraries such as React, Vue.js and Angular improve development efficiency and code organization structure.

Boolean attributes are special attributes in HTML that are activated without a value. 1. The Boolean attribute controls the behavior of the element by whether it exists or not, such as disabled disable the input box. 2.Their working principle is to change element behavior according to the existence of attributes when the browser parses. 3. The basic usage is to directly add attributes, and the advanced usage can be dynamically controlled through JavaScript. 4. Common mistakes are mistakenly thinking that values need to be set, and the correct writing method should be concise. 5. The best practice is to keep the code concise and use Boolean properties reasonably to optimize web page performance and user experience.

HTML code can be cleaner with online validators, integrated tools and automated processes. 1) Use W3CMarkupValidationService to verify HTML code online. 2) Install and configure HTMLHint extension in VisualStudioCode for real-time verification. 3) Use HTMLTidy to automatically verify and clean HTML files in the construction process.

HTML, CSS and JavaScript are the core technologies for building modern web pages: 1. HTML defines the web page structure, 2. CSS is responsible for the appearance of the web page, 3. JavaScript provides web page dynamics and interactivity, and they work together to create a website with a good user experience.

The function of HTML is to define the structure and content of a web page, and its purpose is to provide a standardized way to display information. 1) HTML organizes various parts of the web page through tags and attributes, such as titles and paragraphs. 2) It supports the separation of content and performance and improves maintenance efficiency. 3) HTML is extensible, allowing custom tags to enhance SEO.

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.


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