JavaScript 中正则表达式验证 URL 网址合法性,实用有效

Posted 2023-03-08 勇敢*牛牛

正则表达式式

正则表达式：/^(?:http(s)?:\\/\\/)?[\\w.-]+(?:\\.[\\w\\.-]+)+[\\w\\-\\._~:/?#[\\]@!\\$&'\\*\\+,;=.]+$/
上面正则表达式验证对以下类型网址都有效，可以去https://regexr.com/在线验证下

/^(?:http(s)?:\\/\\/)?[\\w.-]+(?:\\.[\\w\\.-]+)+[\\w\\-\\._~:/?#[\\]@!\\$&'\\*\\+,;=.]+$/

http://192.168.31.111:8080
https://backend.thoroughfuture.com:443
https://backend.thoroughfuture.com:443/getUser?name=niu&age=18
https://www.example.com
http://www.example.com
www.example.com
example.com
http://blog.example.com
http://www.example.com/product
http://www.example.com/products?id=1&page=2
http://www.example.com#up
http://255.255.255.255
255.255.255.255
http://invalid.com/perl.cgi?key= | http://web-site.com/cgi-bin/perl.cgi?key1=value1&key2
http://www.site.com:8008

function IsURL(strUrl) 
   var regular = /^(?:http(s)?:\\/\\/)?[\\w.-]+(?:\\.[\\w\\.-]+)+[\\w\\-\\._~:/?#[\\]@!\\$&'\\*\\+,;=.]+$/
    if (regular.test(strUrl)) 
      return true;
    
    else 
      return false;
    

console.log(IsURL('https://backend.thoroughfuture.com:443'));