How to extract a IP address from JavaScript string data

February 2, 2022

I have string data aa = {"PC-lab-network-452":[{"version":4,"addr":"10.186.32.137","OS-EXT-IPS:type":"fixed","OS-EXT-IPS-MAC:mac_addr":"fa:16:3e:39:38:ac"}]}

in javaScript and I’ve to extract the exact IP address –10.186.32.137 from this data

I’m trying this command–

b = aa.match(\10.186.32.137\g) but it also matches the pattern like 10.186.32.13. I need to match the exact pattern. Any help to fix this?

>Solution :

If you want to solve this without regex. Try this :

const a = {"PC-lab-network-452":[{"version":4,"addr":"10.186.32.137","OS-EXT-IPS:type":"fixed","OS-EXT-IPS-MAC:mac_addr":"fa:16:3e:39:38:ac"}]};

Object.keys(a).forEach(item => {
    const ipExist = a[item].find(obj => obj.addr === "10.186.32.137");
    if (ipExist) {
        console.log(ipExist.addr);
    }
    else {
        console.log('IP not found');
    }
});