10 examples of 'how to get ip address and port number from url' in JavaScript

155
function getPort(url) {
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    var hostPattern = /\w+:\/\/([^\/]+)(\/)?/i;
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    var domain = url.match(hostPattern);
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    var pos = domain[1].indexOf(":");
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    if(pos !== -1) {
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        domain[1] = domain[1].substr(pos + 1);
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        return parseInt(domain[1]);
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    } else if(url.toLowerCase().substr(0, 5) === "https") return 443;
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    else return 80;
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}

57
function getProxyHostPort(url) {
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  var l = document.createElement('a');
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  l.href = url;
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  return {host: l.host.split(':')[0], port: l.port};
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}

21
function extractHost(url) {
22
  // Extract host from ':///', includes the port
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  return (/:\/\/([^/]+)\//).exec(url)[1];
24
}

34
function parse_url(url) {
35
    var parser = document.createElement('a');
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    parser.href = url;
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    var new_url = parser.hostname;
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    if (new_url.indexOf("www.") === 0) {
39
        new_url = new_url.substring(4, new_url.length)
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    }
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    return new_url
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}

57
function getHost(url){
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	var parser = document.createElement('a');
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	parser.href = url;
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	return parser.host;
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}

81
function getPort(hostUrl) {
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	var port
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	// check for specific port number
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	if (hostUrl != null && typeof hostUrl == 'string') {
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		var urlObject = url.parse(hostUrl, false, true)
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		// port number given
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		if (urlObject.port) {
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			var num = parseInt(urlObject.port)
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			if (!isNaN(num)) port = num
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		}
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		// https default port
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		if (!port && urlObject.protocol &&
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			urlObject.protocol == 'https:') {
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			port = 443
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		}
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	}
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	// default port
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	if (!port) port = 80
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	return port
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}

12
export default function extractHostname(url) {
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  let hostname;
14
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  if (url.indexOf("://") > -1) {
16
    hostname = url.split("/")[2];
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  } else {
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    hostname = url.split("/")[0];
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  }
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  hostname = hostname.split(":")[0];
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  hostname = hostname.split("?")[0];
22
23
  return hostname;
24
}

59
function extractHostname(url) {
60
    // https://stackoverflow.com/a/23945027
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    return url
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        .split("/")
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        [url.indexOf("//") > -1 ? 2 : 0].split(":")[0]
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        .split("?")[0];
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}

154
function getProtoFromURL(){
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//Returns the protocol portion of the current URL
156
	var url = document.URL;
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	var url_parts = document.URL.split("/");
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	var result =url_parts[0];
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	result = result.replace(":","");
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	return result;
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}

10
function extractHostname(url) {
11
  const [, hostname] = HOSTNAME_RE.exec(url) || [];
12
  return hostname;
13
}