Javascript method to achieve hexadecimal conversion: 1. Conversion through "Number.parseInt(string, radix)"; 2. Conversion through "Number.toString(radix)" method.
The operating environment of this article: Windows 7 system, javascript version 1.8.5, DELL G3 computer
javascriptHow to achieve hexadecimal conversion?
js arbitrary base conversion (binary, octal, decimal...thirty-hexadecimal)
Base conversion can only occur on numbers, which is the Number type, so to perform base conversion, you need to use the method of the Number type. There are two methods :
parseInt(string, radix) or parseInt(string, radix), the former is a global method and the previous specification. Now the specification has changed to the method under Number.
Number.toString(radix)
But since most languages only support octal, decimal and hexadecimal literal values, Therefore, when js is converting, it can only convert between string and numeric types, that is, it can only convert strings in other bases into decimal numbers, or convert decimal numbers into strings in other bases.
var a = 0xa;//0x表示十六进制,但是js会强制转换为十进制来运算,0xa == 10 var b = 010;//0开头表示八进制,同样强制转换为十进制来运算 010 = 8 a*b //= 80
1. Number.parseInt(string, radix)
This is a string (which can only be composed of letters and numbers). This can only be converted from low base to high base. , such as binary to octal, but octal cannot be converted to binary, radix represents base, and the value is 2~36.
Number.parseInt('010',8)//8 Number.parseInt('20',2)//NaN
2. Number.toString(radix)
This function can only convert decimal numbers into any base string form. Similarly, radix represents base, with a value of 2~36 .
(10).toString(2)//"1010"转2进制 (10).toString(16)//"a" 转16进制 (1000).toString(36)//"rs" 转36进制
Recommended learning: "javascript video tutorial"
The above is the detailed content of How to achieve hexadecimal conversion in javascript. For more information, please follow other related articles on the PHP Chinese website!

HTML and React can be seamlessly integrated through JSX to build an efficient user interface. 1) Embed HTML elements using JSX, 2) Optimize rendering performance using virtual DOM, 3) Manage and render HTML structures through componentization. This integration method is not only intuitive, but also improves application performance.

React efficiently renders data through state and props, and handles user events through the synthesis event system. 1) Use useState to manage state, such as the counter example. 2) Event processing is implemented by adding functions in JSX, such as button clicks. 3) The key attribute is required to render the list, such as the TodoList component. 4) For form processing, useState and e.preventDefault(), such as Form components.

React interacts with the server through HTTP requests to obtain, send, update and delete data. 1) User operation triggers events, 2) Initiate HTTP requests, 3) Process server responses, 4) Update component status and re-render.

React is a JavaScript library for building user interfaces that improves efficiency through component development and virtual DOM. 1. Components and JSX: Use JSX syntax to define components to enhance code intuitiveness and quality. 2. Virtual DOM and Rendering: Optimize rendering performance through virtual DOM and diff algorithms. 3. State management and Hooks: Hooks such as useState and useEffect simplify state management and side effects handling. 4. Example of usage: From basic forms to advanced global state management, use the ContextAPI. 5. Common errors and debugging: Avoid improper state management and component update problems, and use ReactDevTools to debug. 6. Performance optimization and optimality

Reactisafrontendlibrary,focusedonbuildinguserinterfaces.ItmanagesUIstateandupdatesefficientlyusingavirtualDOM,andinteractswithbackendservicesviaAPIsfordatahandling,butdoesnotprocessorstoredataitself.

React can be embedded in HTML to enhance or completely rewrite traditional HTML pages. 1) The basic steps to using React include adding a root div in HTML and rendering the React component via ReactDOM.render(). 2) More advanced applications include using useState to manage state and implement complex UI interactions such as counters and to-do lists. 3) Optimization and best practices include code segmentation, lazy loading and using React.memo and useMemo to improve performance. Through these methods, developers can leverage the power of React to build dynamic and responsive user interfaces.

React is a JavaScript library for building modern front-end applications. 1. It uses componentized and virtual DOM to optimize performance. 2. Components use JSX to define, state and attributes to manage data. 3. Hooks simplify life cycle management. 4. Use ContextAPI to manage global status. 5. Common errors require debugging status updates and life cycles. 6. Optimization techniques include Memoization, code splitting and virtual scrolling.

React's future will focus on the ultimate in component development, performance optimization and deep integration with other technology stacks. 1) React will further simplify the creation and management of components and promote the ultimate in component development. 2) Performance optimization will become the focus, especially in large applications. 3) React will be deeply integrated with technologies such as GraphQL and TypeScript to improve the development experience.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Chinese version
Chinese version, very easy to use

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Notepad++7.3.1
Easy-to-use and free code editor