一些正则表达式随记添加

YangShuailing · Nov 5, 2016 · c679c49 · c679c49
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diff --git a/Javascript/一些正则表达式随记.md b/Javascript/一些正则表达式随记.md
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+
+一些正则表达式随记
+---
+
+通过一些例子来学习正则表达式摘录
+
+
+## 获取url中域名、协议正则 
+
+```js
+//获取url中域名、协议正则 'http://xxx.xx/xxx','https://xxx.xx/xxx','//xxx.xx/xxx'
+/^(http(?:|s)\:)*\/\/([^\/]+)/.test("http://www.baidu.com");
+
+// 必须有协议 
+/^[a-zA-Z]+:\/\//.test("http://www.baidu.com");
+```
+
+
+## 去除首尾的‘/’
+
+```js
+//去除首尾的‘/’
+input = input.replace(/^\/*|\/*$/g,'');
+```
+
+## javascript:: 、javascript:void(0)
+
+```js
+href.match(/^(javascript\s*\:|#)/);
+```
+
+## 匹配  
+
+```js
+var str = "access_token=dcb90862-29fb-4b03-93ff-5f0a8f546250; refresh_token=702f4815-a0ff-456c-82ce-24e4d7d619e6; account_uid=1361177947320160506170322436";
+str.match(/account_uid=([^\=]+(\;)|(.*))/ig);
+```
+
+## 匹配后缀
+
+```js
+  var strRegex = "(.jpg|.gif|.txt)";
+  var re=new RegExp(strRegex);
+  if (re.test(str)){
+
+  }
+/(.jpg|.gif)+(\?|\#|$)/.test('a/b/c.jpgsss'); //=> false
+/(.jpg|.gif)+(\?|\#|$)/.test('a/b/c.jpg?'); //=> true
+```
+
+## 匹配一些字符
+
+```js
+var str = 'asdf html-webpack-plugin for "index/index.html" asdfasdf';
+str.match(/html-webpack-plugin for \"(.*)\"/ig);
+console.log(RegExp.$1) //=>index/index.html
+```
+
+## 关键字符替换
+
+```js
+'css/[hash:8].index-index.css'.replace(/\[(?:(\w+):)?(contenthash|hash)(?::([a-z]+\d*))?(?::(\d+))?\]/ig,'(.*)');
+//=> css/(.*).index-index.css
+```
+
+## 替换参数中的值
+
+```js
+var str  = '<!DOCTYPE html><html manifest="../../cache.manifest" lang="en"><head><meta charset="UTF-8">';
+str.replace(/<html[^>]*manifest="([^"]*)"[^>]*>/,function(word){
+   return word.replace(/manifest="([^"]*)"/,'manifest="'+url+'"');
+}).replace(/<html(\s?[^\>]*\>)/,function(word){
+    if(word.indexOf('manifest')) return word;
+    return word.replace('<html','<html manifest="'+url+'"');
+});
+//原：<!DOCTYPE html><html manifest="../../cache.manifest" lang="en"><head><meta charset="UTF-8">
+//替换成=> <!DOCTYPE html><html manifest="cache.manifest" lang="en"><head><meta charset="UTF-8">
+```
+
+## 调换
+
+```js
+var name = "Doe, John"; 
+name.replace(/(\w+)\s*, \s*(\w+)/, "$2 $1"); 
+//=> "John Doe"
+```
+
+## 小数点后几位验证
+
+```js
+// 精确到1位小数
+/^[1-9][0-9]*$|^[1-9][0-9]*\.[0-9]$|^0\.[0-9]$/.test(1.2);
+
+// 精确到2位小数
+/^[0-9]+(.[0-9]{2})?$/.test(1.221);
+```
+
+## 校验密码强度
+
+必须是包含大小写字母和数字的组合，不能使用特殊字符，长度在8-10之间。
+
+```js 
+/^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{8,10}$/.test("weeeeeeeW2");
+```
+
+## 校验中文
+
+```js 
+/^[\u4e00-\u9fa5]{0,}$/.test("但是d"); //false
+/^[\u4e00-\u9fa5]{0,}$/.test("但是"); //true
+```
+
+## 由数字、26个英文字母或下划线组成的字符串
+
+```js 
+/^\w+$/.test("ds2_@#"); // false
+```
+
+## 18位身份证号码校验
+
+```js 
+/^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}([0-9]|X)$/.test("11112319220403281X");
+// true
+```
+
+## 校验日期
+
+“yyyy-mm-dd“ 格式的日期校验，已考虑平闰年。
+
+```js 
+/^(?:(?!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)$/.test("0007-12-22");
+// true
+```
diff --git a/README.md b/README.md
@@ -1,4 +1,6 @@
-# 笔记/搜集
+# 笔记/搜集/摘录/实践
+
+这里放置我的笔记、搜集、摘录，给自己建设自我的知识体系，保持好奇心。
 
 - **[50多个公众账号推荐，助你了解程序员的世界](other/公众账号推荐.md)**
 - **[Git常用命令及教程网站清单](other/Git%E5%B8%B8%E7%94%A8%E5%91%BD%E4%BB%A4%E6%B8%85%E5%8D%95.md)**
@@ -33,6 +35,7 @@
 - Javascript
     - **[思维导图来学习 Javascript 基础知识](Javascript/)**
     - [轻量高效的开源JavaScript插件和库](Javascript/轻量高效的开源JavaScript插件和库.md)
+    - [一些正则表达式随记](Javascript/一些正则表达式随记.md)
     - [web开发的框架Backbone.js手册](http://jaywcjlove.github.io/handbook/index.html)
 - 测试工具
     - [测试框架mocha](http://jaywcjlove.github.io/handbook/html/%E6%B5%8B%E8%AF%95%E5%B7%A5%E5%85%B7/mocha.html)