Home Web Front-end JS Tutorial Regular matching of comments in js

Regular matching of comments in js

Mar 29, 2018 am 10:55 AM
javascript regular Comment

This time I will bring you the regular rules for matching annotations in js, and what are the precautions for matching the regular rules for annotations in js. The following is a practical case, let's take a look.

Sometimes we need to remove js comments to reduce redundancy in the code. Sometimes too many comments lead to a large page size.

The comment icon is as follows:

1. Match multi-line comments

Regular expression:

/(?:^|\n|\r)\s*\/\*[\s\S]*?\*\/\s*(?:\r|\n|$)/g
Copy after login
2 .Single-line comment regular expression:

/(?:^|\n|\r)\s*\/\/.*(?:\r|\n|$)/g
Copy after login
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

Recommended reading:

Detailed explanation of the use of the \D metacharacter (equivalent to "[^0-9]") in regular expressions

Regular metacharacters and ordinary characters

The above is the detailed content of Regular matching of comments in js. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1670
14
PHP Tutorial
1273
29
C# Tutorial
1256
24
Conveniently use PyCharm shortcut keys to implement multi-line comments Conveniently use PyCharm shortcut keys to implement multi-line comments Jan 27, 2024 am 08:02 AM

PyCharm multi-line comment shortcut keys: Make code comments more convenient and require specific code examples. In daily programming work, code comments are a very important part. It not only improves the readability and maintainability of the code, but also helps other developers understand the intent and design ideas of the code. However, manually adding code comments is often a time-consuming and tedious task. In order to make our code comments more efficient, PyCharm provides shortcut keys for multi-line comments. In PyCharm, we can use Ctrl+/

How to implement an online speech recognition system using WebSocket and JavaScript 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.

WebSocket and JavaScript: key technologies for implementing real-time monitoring systems 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 use JavaScript and WebSocket to implement a real-time online ordering 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 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 add notes to saved passwords on iPhone How to add notes to saved passwords on iPhone Feb 28, 2024 pm 07:41 PM

iCloud Keychain makes it easier to manage your passwords without relying on memorizing or guessing website or usernames. You can do this by adding notes to existing passwords for apps and websites in iCloud Keychain. In this post, we will explain how to add notes to the passwords you save in iCloud Keychain on iPhone. Requirements There are some requirements you need to meet to use this new feature in iCloud Keychain. iPhone running iOS 15.4 or later Passwords stored in iCloud Keychain A valid Apple ID A valid internet connection How to add notes to saved passwords It goes without saying that you should store some passwords in iCloud Keychain

How to match multiple words or strings using Golang regular expression? How to match multiple words or strings using Golang regular expression? May 31, 2024 am 10:32 AM

Golang regular expressions use the pipe character | to match multiple words or strings, separating each option as a logical OR expression. For example: matches "fox" or "dog": fox|dog matches "quick", "brown" or "lazy": (quick|brown|lazy) matches "Go", "Python" or "Java": Go|Python |Java matches words or 4-digit zip codes: ([a-zA

Simple JavaScript Tutorial: How to Get HTTP Status Code 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

See all articles