How can I determine network and broadcast address from the IP address and subnet mask?

Question

For example:

• IP Address: 130.45.34.36
• Mask: 255.255.240.0

What would be Net ID/Subnet Address, and Broadcast

Answer 1

Code example based on Malt's answer:

const
    ipadr = '130.45.34.36',
    subnet = '255.255.240.0',
    ipadrs = ipadr.split('.'),
    subnets = subnet.split('.');

let networks = [],
    broadcasts = [];

for (let i in ipadrs) {
    networks[i] = ipadrs[i] & subnets[i];
}

console.log('netaddress: ', networks.join('.')) // netaddress:  130.45.32.0

for (let i in networks) {
    broadcasts[i] = networks[i] | ~subnets[i] + 256;
}

console.log('broadcast address: ', broadcasts.join('.')) // broadcast address:  130.45.47.255