url模块常用方法

url模块常用方法
QueryString模块用法

README.md

@@ -102,7 +102,9 @@ project.update  = {[
         modelName:'nodejs',
         update:[
             {time:'2016-10-07',content:[
-                'nodejs/mysql/nodejs操作数据库'
+                'nodejs/mysql/nodejs操作数据库',
+                'url模块常用方法',
+                'QueryString模块用法'
             ]}
         ]
     }

nodejs/QueryString.js

@@ -0,0 +1,42 @@
+// =================== 序列化 =====================
+
+var qs = require('querystring');
+
+var res = qs.stringify({name:'dunizb',course:['jade','node'],from:''});
+// console.log(res);
+// name=dunizb&course=jade&course=node&from=
+
+//第二个参数指定分隔符
+var res = qs.stringify({name:'dunizb',course:['jade','node'],from:''},'-');
+// console.log(res);
+// name=dunizb-course=jade-course=node-from=
+
+//第三个参数指定key,value之间的符号
+var res = qs.stringify({name:'dunizb',course:['jade','node'],from:''},'-',':');
+// console.log(res);
+// name:dunizb-course:jade-course:node-from:
+
+
+// ================== 反序列化 =======================
+
+var res = qs.parse('name=dunizb&course=jade&course=node&from=');
+// console.log(res);
+// { name: 'dunizb', course: [ 'jade', 'node' ], from: '' }
+
+var res = qs.parse('name=dunizb-course=jade-course=node-from=','-');
+// console.log(res);
+// { name: 'dunizb', course: [ 'jade', 'node' ], from: '' }
+
+var res = qs.parse('name:dunizb-course:jade-course:node-from:','-',':');
+// console.log(res);
+// { name: 'dunizb', course: [ 'jade', 'node' ], from: '' }
+
+// ================== 转义与反转义 =======================
+var res = qs.escape('<哈哈>');
+// console.log(res);
+// %3C%E5%93%88%E5%93%88%3E
+
+var res = qs.unescape('%3C%E5%93%88%E5%93%88%3E');
+// console.log(res);
+// <哈哈>
+

nodejs/url.js

@@ -0,0 +1,63 @@
+// =================== URI与URL的区别？ ========================
+// URI属于URL更高层次的抽象，一种字符串文本标准。就是说，URI属于父类，而URL属于URI的子类。URL是URI的一个子集。
+// 二者的区别在于，URI表示请求服务器的路径，定义这么一个资源。而URL同时说明要如何访问这个资源（http://）。
+// URI可以表示一个域，也可以表示一个资源。URL只能表示一个资源。
+
+var url = require('url');
+
+// 解析URL字符串为对象
+var res = url.parse("http://www.imooc.com/search/course?words=node");
+// console.log(res);
+// Url {
+//   protocol: 'http:',
+//   slashes: true,
+//   auth: null,
+//   host: 'www.imooc.com',
+//   port: null,
+//   hostname: 'www.imooc.com',
+//   hash: null,
+//   search: '?words=node',
+//   query: 'words=node',
+//   pathname: '/search/course',
+//   path: '/search/course?words=node',
+//   href: 'http://www.imooc.com/search/course?words=node' }
+
+var res = url.parse("http://www.imooc.com/search/course?words=node",true);
+// console.log(res);
+// Url {
+//   protocol: 'http:',
+//   slashes: true,
+//   auth: null,
+//   host: 'www.imooc.com',
+//   port: null,
+//   hostname: 'www.imooc.com',
+//   hash: null,
+//   search: '?words=node',
+//   query: { words: 'node' },
+//   pathname: '/search/course',
+//   path: '/search/course?words=node',
+//   href: 'http://www.imooc.com/search/course?words=node' }
+
+var urlobj =  {
+  protocol: 'http:',
+  slashes: true,
+  auth: null,
+  host: 'www.imooc.com',
+  port: null,
+  hostname: 'www.imooc.com',
+  hash: null,
+  search: '?words=node',
+  query: { words: 'node' },
+  pathname: '/search/course',
+  path: '/search/course?words=node',
+  href: 'http://www.imooc.com/search/course?words=node' }
+
+// 格式化字符串对象为URL 
+var res = url.format(urlobj);  
+// console.log(res);  
+// http://www.imooc.com/search/course?words=node
+
+var res = url.resolve("http://www.imooc.com/","search/course?words=node");
+// console.log(res); 
+// http://www.imooc.com/search/course?words=node
+