The escape characters in JavaScript are backslashes and quotes, which can represent special characters in strings or change the meaning of characters. Detailed introduction: 1. Backslash is an escape character in JavaScript. It can be used in combination with other characters to represent special characters. Use two backslashes to represent the backslash itself. Use backslashes to escape some special characters. defined as their ASCII code representation. Use backslashes to escape some non-printing characters to their Unicode representation; 2. Quotation marks, etc.
Escape characters in JavaScript are backslash (\) and quotation marks (' or "). These escape characters can represent special characters in strings character or change the meaning of a character.
Backslash (\)
Backslash is an escape character in JavaScript, which can be used in combination with other characters to Represents special characters. Here are some common backslash usages:
Represents the backslash itself: Use two backslashes (\) to represent the backslash itself. For example, the string "\n" means A newline character.
represents special characters: Use backslash to escape some special characters to their ASCII code representation. For example, "\0" represents a null character, "\t" represents a system table character, "\b" represents a backspace character, etc.
represents non-printing characters: Use backslashes to escape some non-printing characters to their Unicode representation. For example, "\u0000 " means a null character, "\u0009" means a tab character, etc.
Quotation marks (' or ")
In JavaScript, strings can Surrounded by single quotes (') or double quotes ("). These two quotes are used in basically the same way, but it should be noted that if the string contains single quotes or double quotes, you need to use another kind of quotes. Indicates the boundaries of strings. For example:
var myString = "He said, 'Hello!'" // 使用雙引號括起來的字符串中包含單引號 var myString = 'She said, "Hi!"' // 使用單引號括起來的字符串中包含雙引號
In addition, quotation marks can also be used to indicate property accessors or constructors. For example:
var myObject = {
name: "John",
age: 30
}
console.log(myObject["name"]) // 輸出 "John"
console.log(myObject.age) // 輸出 30Constructors are also expressed using quotation marks, for example:
var myArray = new Array("apple", "banana", "orange")The above is the detailed content of What are JavaScript escape characters?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
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
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
WebSocket and JavaScript: key technologies for implementing real-time monitoring systems
Dec 17, 2023 pm 05:30 PM
WebSocket and JavaScript: Key technologies for realizing real-time monitoring systems Introduction: With the rapid development of Internet technology, real-time monitoring systems have been widely used in various fields. One of the key technologies to achieve real-time monitoring is the combination of WebSocket and JavaScript. This article will introduce the application of WebSocket and JavaScript in real-time monitoring systems, give code examples, and explain their implementation principles in detail. 1. WebSocket technology
How to implement an online speech recognition system using WebSocket and JavaScript
Dec 17, 2023 pm 02:54 PM
How to use WebSocket and JavaScript to implement an online speech recognition system Introduction: With the continuous development of technology, speech recognition technology has become an important part of the field of artificial intelligence. The online speech recognition system based on WebSocket and JavaScript has the characteristics of low latency, real-time and cross-platform, and has become a widely used solution. This article will introduce how to use WebSocket and JavaScript to implement an online speech recognition system.
How to use JavaScript and WebSocket to implement a real-time online ordering system
Dec 17, 2023 pm 12:09 PM
Introduction to how to use JavaScript and WebSocket to implement a real-time online ordering system: With the popularity of the Internet and the advancement of technology, more and more restaurants have begun to provide online ordering services. In order to implement a real-time online ordering system, we can use JavaScript and WebSocket technology. WebSocket is a full-duplex communication protocol based on the TCP protocol, which can realize real-time two-way communication between the client and the server. In the real-time online ordering system, when the user selects dishes and places an order
JavaScript and WebSocket: Building an efficient real-time weather forecasting system
Dec 17, 2023 pm 05:13 PM
JavaScript and WebSocket: Building an efficient real-time weather forecast system Introduction: Today, the accuracy of weather forecasts is of great significance to daily life and decision-making. As technology develops, we can provide more accurate and reliable weather forecasts by obtaining weather data in real time. In this article, we will learn how to use JavaScript and WebSocket technology to build an efficient real-time weather forecast system. This article will demonstrate the implementation process through specific code examples. We
How to implement an online reservation system using WebSocket and JavaScript
Dec 17, 2023 am 09:39 AM
How to use WebSocket and JavaScript to implement an online reservation system. In today's digital era, more and more businesses and services need to provide online reservation functions. It is crucial to implement an efficient and real-time online reservation system. This article will introduce how to use WebSocket and JavaScript to implement an online reservation system, and provide specific code examples. 1. What is WebSocket? WebSocket is a full-duplex method on a single TCP connection.
Simple JavaScript Tutorial: How to Get HTTP Status Code
Jan 05, 2024 pm 06:08 PM
JavaScript tutorial: How to get HTTP status code, specific code examples are required. Preface: In web development, data interaction with the server is often involved. When communicating with the server, we often need to obtain the returned HTTP status code to determine whether the operation is successful, and perform corresponding processing based on different status codes. This article will teach you how to use JavaScript to obtain HTTP status codes and provide some practical code examples. Using XMLHttpRequest
How to use insertBefore in javascript
Nov 24, 2023 am 11:56 AM
Usage: In JavaScript, the insertBefore() method is used to insert a new node in the DOM tree. This method requires two parameters: the new node to be inserted and the reference node (that is, the node where the new node will be inserted).
How to get HTTP status code in JavaScript the easy way
Jan 05, 2024 pm 01:37 PM
Introduction to the method of obtaining HTTP status code in JavaScript: In front-end development, we often need to deal with the interaction with the back-end interface, and HTTP status code is a very important part of it. Understanding and obtaining HTTP status codes helps us better handle the data returned by the interface. This article will introduce how to use JavaScript to obtain HTTP status codes and provide specific code examples. 1. What is HTTP status code? HTTP status code means that when the browser initiates a request to the server, the service