91JS原生：node.js对URL的解析规则

Posted 2021-12-18 gushixianqiancheng

用node.js搭建的服务器环境，其内置模块URL可以把浏览器传过来的URL进行解析，并根据解析结果做出相应的响应。
1、引入node内置模块url,用url模块的parse方法来解析winUrl
```javascript
var url = require(‘url‘);
var winUrl = url.parse(‘http://www.zhu.cn:80/ccc/index.html?name=zxt&age=26#33‘, true);
console.log(winUrl);
   winUrl
   protocol: ‘http:‘,
   slashes: true,
   auth: null,
   host: ‘www.zhu.cn:80‘,
   port: ‘80‘,
   hostname: ‘www.zhu.cn‘,
   hash: ‘#33‘,
   search: ‘?name=zxt&age=26‘,
   query:  name: ‘zxt‘, age: ‘26‘ ,当第二行的true不存在时query: ‘name=zxt&age=26‘,
   pathname: ‘/ccc/index.html‘,
   path: ‘/ccc/index.html?name=zxt&age=26‘,
   href: ‘http://www.zhu.cn:80/index.html?name=zxt&age=26#33‘ 
```

4、封装解析方法（解析URL中的问号参数值以及HASH值） 
```javascript:run
function queryURLParameter(url) 
    var obj = ;
    var reg = /([^?=&#]+)=([^?=&#]+)/g;
    url.replace(reg, function () 
        obj[arguments[1]] = arguments[2];
    );
    reg = /#([^?=&#]+)/;
    if (reg.test(url)) 
        obj[‘HASH‘] = reg.exec(url)[1];
    
    return obj;

var str1="https://www.baidu.com/newspage/data/landingsuper?AAA=1111&BBB=222&CCC=333#1234";
var abc1=queryURLParameter(str1);
console.log("第1次输出:",abc1);

function hashA(url)
    var reg=/#([^#&=?]+)/;
    if(reg.test(url))
        return reg.exec(url)[1];
    

var str2="https://www.baidu.com/newspage/data/landingsuper?AAA=1111&BBB=222&CCC=333#1234"
var abc2=hashA(str2);
console.log("第2次输出:"+abc2);

var ary=["零","一","二","三","四","五","六","七","八","九"];
var str3="今年是2017年";
var abc3=str3.replace(/\d/g,function () 
    return ary[arguments[0]]
);
console.log("第3次输出:"+abc3);

/*正则匹配输出 我是[你的朋友]钱成*/
var str4 = ‘我是<img src="haha.png" alt="你的朋友"/>钱成‘;
var reg=/(.+)<(.+)t="(.+)"\/>(.+)/;
var AAA=reg.exec(str4);
var abc4=AAA[1]+"["+AAA[3]+"]"+AAA[4];
console.log("第4次输出:"+abc4);
```