15 commonly used js regular expressions
这篇文章给大家收集整理了用户名和密码等15个常用的js正则表达式,需要的朋友参考下吧
收集整理了15个常用的javaScript正则表达式,其中包括用户名、密码强度、整数、数字、电子邮件地址(Email)、手机号码、身份证号、URL地址、 IPv4地址、 十六进制颜色、 日期、 QQ号码、 微信号、车牌号、中文正则。表单验证处理必备。
1 用户名正则
//用户名正则,4到16位(字母,数字,下划线,减号) var uPattern = /^[a-zA-Z0-9_-]{4,16}$/; //输出 true console.log(uPattern.test("iFat3"));
2 密码强度正则
//密码强度正则,最少6位,包括至少1个大写字母,1个小写字母,1个数字,1个特殊字符 var pPattern = /^.*(?=.{6,})(?=.*\d)(?=.*[A-Z])(?=.*[a-z])(?=.*[!@#$%^&*? ]).*$/; //输出 true console.log("=="+pPattern.test("iFat3#"));
3 整数正则
//正整数正则 var posPattern = /^\d+$/; //负整数正则 var negPattern = /^-\d+$/; //整数正则 var intPattern = /^-?\d+$/; //输出 true console.log(posPattern.test("42")); //输出 true console.log(negPattern.test("-42")); //输出 true console.log(intPattern.test("-42"));
4 数字正则
可以是整数也可以是浮点数
//正数正则 var posPattern = /^\d*\.?\d+$/; //负数正则 var negPattern = /^-\d*\.?\d+$/; //数字正则 var numPattern = /^-?\d*\.?\d+$/; console.log(posPattern.test("42.2")); console.log(negPattern.test("-42.2")); console.log(numPattern.test("-42.2"));
5 Email正则
//Email正则 var ePattern = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/; //输出 true console.log(ePattern.test(65974040@qq.com));
6 手机号码正则
//手机号正则 var mPattern = /^((13[0-9])|(14[5|7])|(15([0-3]|[5-9]))|(18[0,5-9]))\d{8}$/; //输出 true console.log(mPattern.test("18600000000"));
7 身份证号正则
//身份证号(18位)正则 var cP = /^[1-9]\d{5}(18|19|([23]\d))\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/; //输出 true console.log(cP.test("11010519880605371X"));
8 URL正则
//身份证号(18位)正则 var cP = /^[1-9]\d{5}(18|19|([23]\d))\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/; //输出 true console.log(cP.test("11010519880605371X"));
9 IPv4地址正则
//ipv4地址正则 var ipP = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/; //输出 true console.log(ipP.test("115.28.47.26"));
10 十六进制颜色正则
//RGB Hex颜色正则 var cPattern = /^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$/; //输出 true console.log(cPattern.test("#b8b8b8"));
11 日期正则
//日期正则,简单判定,未做月份及日期的判定 var dP1 = /^\d{4}(\-)\d{1,2}\1\d{1,2}$/; //输出 true console.log(dP1.test("2017-05-11")); //输出 true console.log(dP1.test("2017-15-11")); //日期正则,复杂判定 var dP2 = /^(?:(?!0000)[0-9]{4}-(?:(?:0[1-9]|1[0-2])-(?:0[1-9]|1[0-9]|2[0-8])|(?:0[13-9]|1[0-2])-(?:29|30)|(?:0[13578]|1[02])-31)|(?:[0-9]{2}(?:0[48]|[2468][048]|[13579][26])|(?:0[48]|[2468][048]|[13579][26])00)-02-29)$/; //输出 true console.log(dP2.test("2017-02-11")); //输出 false console.log(dP2.test("2017-15-11")); //输出 false console.log(dP2.test("2017-02-29"));
12 QQ号码正则
//QQ号正则,5至11位 var qqPattern = /^[1-9][0-9]{4,10}$/; //输出 true console.log(qqPattern.test("65974040"));
13 微信号正则
//微信号正则,6至20位,以字母开头,字母,数字,减号,下划线 var wxPattern = /^[a-zA-Z]([-_a-zA-Z0-9]{5,19})+$/; //输出 true console.log(wxPattern.test("RuilongMao"));
14 车牌号正则
//车牌号正则 var cPattern = /^[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领A-Z]{1}[A-Z]{1}[A-Z0-9]{4}[A-Z0-9挂学警港澳]{1}$/; //输出 true console.log(cPattern.test("京K39006"));
15 包含中文正则
//包含中文正则 var cnPattern = /[\u4E00-\u9FA5]/; //输出 true console.log(cnPattern.test("42度"));
The above is the detailed content of 15 commonly used js regular expressions. For more information, please follow other related articles on the PHP Chinese website!

JavaandJavaScriptaredistinctlanguages:Javaisusedforenterpriseandmobileapps,whileJavaScriptisforinteractivewebpages.1)Javaiscompiled,staticallytyped,andrunsonJVM.2)JavaScriptisinterpreted,dynamicallytyped,andrunsinbrowsersorNode.js.3)JavausesOOPwithcl

JavaScript core data types are consistent in browsers and Node.js, but are handled differently from the extra types. 1) The global object is window in the browser and global in Node.js. 2) Node.js' unique Buffer object, used to process binary data. 3) There are also differences in performance and time processing, and the code needs to be adjusted according to the environment.

JavaScriptusestwotypesofcomments:single-line(//)andmulti-line(//).1)Use//forquicknotesorsingle-lineexplanations.2)Use//forlongerexplanationsorcommentingoutblocksofcode.Commentsshouldexplainthe'why',notthe'what',andbeplacedabovetherelevantcodeforclari

The main difference between Python and JavaScript is the type system and application scenarios. 1. Python uses dynamic types, suitable for scientific computing and data analysis. 2. JavaScript adopts weak types and is widely used in front-end and full-stack development. The two have their own advantages in asynchronous programming and performance optimization, and should be decided according to project requirements when choosing.

Whether to choose Python or JavaScript depends on the project type: 1) Choose Python for data science and automation tasks; 2) Choose JavaScript for front-end and full-stack development. Python is favored for its powerful library in data processing and automation, while JavaScript is indispensable for its advantages in web interaction and full-stack development.

Python and JavaScript each have their own advantages, and the choice depends on project needs and personal preferences. 1. Python is easy to learn, with concise syntax, suitable for data science and back-end development, but has a slow execution speed. 2. JavaScript is everywhere in front-end development and has strong asynchronous programming capabilities. Node.js makes it suitable for full-stack development, but the syntax may be complex and error-prone.

JavaScriptisnotbuiltonCorC ;it'saninterpretedlanguagethatrunsonenginesoftenwritteninC .1)JavaScriptwasdesignedasalightweight,interpretedlanguageforwebbrowsers.2)EnginesevolvedfromsimpleinterpreterstoJITcompilers,typicallyinC ,improvingperformance.

JavaScript can be used for front-end and back-end development. The front-end enhances the user experience through DOM operations, and the back-end handles server tasks through Node.js. 1. Front-end example: Change the content of the web page text. 2. Backend example: Create a Node.js server.


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

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

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 English version
Recommended: Win version, supports code prompts!

SublimeText3 Chinese version
Chinese version, very easy to use

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.
