js正则过滤域名部分

Question

如何过滤域名（加粗部分）

https://blog.csdn.net/orangleliu/article/details/8822987
http://platform.baidu.com:8080/sss/kk/ll.action
http://platform.ishangzu.com:8080/zz/dd/visit?id=1&cc=N

Answer 1

let arr=[
        'https://blog.csdn.net/orangleliu/article/details/8822987',
        'http://platform.baidu.com:8080/sss/kk/ll.action',
        'http://platform.ishangzu.com:8080/zz/dd/visit?id=1&cc=N'
    ]
    arr=arr.map(item=>item.replace(/^https?:\/\/(.*?)(:\d+)?\/.*$/,'$1'));
    console.log(arr);

Answer 2

var arr=[
        'https://blog.csdn.net/orangleliu/article/details/8822987',
        'http://platform.baidu.com:8080/sss/kk/ll.action',
        'http://platform.ishangzu.com:8080/zz/dd/visit?id=1&cc=N'
    ];
arr.join(",").match(/\bhttps?:\/\/[^:\/]+/ig);